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1. Edit Load Fence Reinstate a previously saved fence Edit Save Fence Give a name to and save the currently active fence B There is a slight difference in the command syntax between the menu option and icon forms of the Fence edit operations See Fence Edit Operations p 4 13 Edit Copy Active to Target This command transfers all the information from the active layer to the target layer in a manner similar to the fence copy and paste commands The two variations Copy All and Copy Transparent define whether the background information is transferred All or if only the non background information is copied Transparent The decision as to what is data and what is background is performed the same as the copy and paste fence operations and is fully described in the section labelled Transferring data between layers Edit Cut Fence to Buffer Removes cuts all data from within a fenced area and places it into the Buffer January 2009 Deskan v7 1 5 4 Menu Options Edit Cut Fence to File Removes cuts all data from within a fenced area and places it into a new free raster file i e not part of a document Edit Cut Fence to Target Removes cuts all data from within a fenced area and places it into the Target layer Edit Copy Fence to Buffer Copies all data within a fenced area and places it into the Buffer Edit Copy Fence to File Copies all data within a fenced area and places it into
2. File Modify Resolution Convert Offers a dialog to enter the required resolution then performs a scaling to make the image the equivalent of the new resolution File Rotate 90 deg Rotate all the layers in the document anti clockwise by 90 degrees E File Rotate 180 deg Rotate all the layers in the document by 180 degrees _ File Rotate 270 deg Rotate all the layers in the document anti clockwise by 270 degrees E File Rotate Angle Rotate all the layers in the document anti clockwise by a specified angle _ File Skew Horizontal Rotates all the layers in the image until a reference line drawn in the image is horizontal _ File Skew Vertical Rotates all the layers in the image until a reference line drawn in the image is vertical _ File Flip Horizontal All layers are mirrored about the horizontal axis _ File Flip Vertical All layers are mirrored about the vertical axis January 2009 Deskan v7 1 5 2 Menu Options E File Scale by Common Factor Both the vertical and horizontal axes are scaled by the same factor 3 File Scale by X and Y Factors The scaling factors of the vertical and horizontal axes are specified independently L File Crop to Fence The extent of the document s layers are reduced to the size of the fence All data outside the fence or its bounding rectangle is discarded E File Invert The pixels of select
3. It is very important that the scanner is positioned in the calibration cradle before plugging the scanner in or starting the application The scanner will start to move If this happens lift the scanner up 100mm and it should stop Place it down in the cradle again 3 Connect the scanner and plug it in A Hardware found dialog will appear then disappear 4 If this does not occur manually start driver setup from D Scanner setup The installation is complete Computer restarts Steps for initial configuration of the Deskan software 5 Start the Deskan Express application 6 Open a scan document File New Scan 7 Perform the menu option Scan Calibrate 8 Using the menu option Scan Settings and Scan Test Strip perform a test scan to ensure scanner is working properly Note We have found the best results when we use 40 on the Brightness setting and 60 for the Contrast setting The initial configuration is complete Starting Deskan v7 1 The application can be launched by selecting Start Programs Deskan v7 1 Deskan v7 1 is installed with an executable named Deskan 1 exe In addition if no previous association had been set up between raster file types and any application programs then Deskan w7 1 s setup will introduce a default association allowing you to double click on any raster file in Explorer to open the file in Deskan v7 1 When Deskan v7 1 starts up you wil
4. w Tools Draw Enables the freehand drawing tool L Tools Erase Enables the erasing tool _ Tools Line Enables the straight line segment drawing tool January 2009 Deskan v7 1 5 9 Menu Options L Tools Rectangle Enables the drawing of rectangles with horizontal and vertical sides L Tools Inclined Rectangle Enables the drawing of rectangles with inclined sides L Tools Circle by Centre Enables the drawing of circles by placing the centre point and extending the radius L Tools Circle by Circum Enables the drawing of circles by pinning down a point on the circumference and moving the centre of the circle to the required location Tools Arc Start End Edge Enables the drawing of a circular arc by fixing the ends of the arc in place and drawing out a point along the arc to the required position Tools Arc Start Edge End Enables the drawing of a circular arc by fixing the starting point and a point along the arc and drawing out the endpoint to the required location L Tools Arc Centre Start End Enables the drawing of a circular arc by first defining its radial centre and a point on the circumference then dialing the required sweep angle in the clockwise direction Tools Arc Start Centre End Enables the drawing of a circular arc by first defining the starting point then its radial centre and finally the end point in the clockwise direction Colour Colour Measur
5. Delete a control point Transform Edit Edit the parameters of a control point such as its pixel coordinates position in the image the World coordinates it represents its weight and identification number If it is a marker the weight and world coordinates will not be available Ei Transform Move Enables the moving of a control point in the image using the mouse LI Transform Output Summons the Transformation Output Settings dialog which allows the user to control the extents and pixel size of the output Raster file resulting from a Raster Transformation Ei Transform List Lists the details of all placed control points namely their pixel coordinates World X Y coordinates weight and ID Transform Residuals Generates a report detailing the transformation residuals fi Transform Helmert Selects the Helmert transformation E Transform Affine Selects the Affine transformation Transform Projective Selects the Projective transformation Scan Scan Calibrate Recalibrate the scanner using the calibration cradle January 2009 Deskan v7 1 5 13 Menu Options Scan Settings Adjust the scanner Brightness Contrast settings Scan Scan Test Strip Perform a short test scan to determine correctness of settings Scan Derive Palette Modify Document palette to contain palette entries suitable for currently held strip Scan Auto Scan Perform a re
6. January 2005 Deskan Express Color v6 0 B 6 9 Tutorials Now open the View Settings dialog again to inspect the new layers There should now be two layers listed Proforma and Drawing z The View Settings dialog showing the three layers 10 11 12 13 14 15 16 17 Fit the entire image using the f Quick Key Our aim is to select everything inside the border of the drawing both line work and text and move it to the target layer Drawing To enable the moving of selected raster elements as opposed to deleting or copying them ensure checkable menu option Tools Do Select Move Selections is ticked Having specified that selected elements are to be moved the method of selection now has to be chosen Currently the only available method is selection by Pointing Dragged Area so select Tools Do Select Select by Point Area The extent of the selections can be restricted to a fence or to the portion of the image currently in view Make sure the checkable menu option Tools Do Select In View is ticked so that selections are restricted to the view Selection of a raster element can now be done in two ways by pointing and clicking on raster elements or by dragging an area around them To demonstrate selection by pointing and clicking View restricted use View Load location to load the saved location called line work which is centred at pixel location 900 1000 M
7. ih C EE A OTE 2 24 S ann n 5 14 alnyert ose oein 3 8 tools ne ittie 5 8 January 2005 Deskan Express Color v6 0 1 3 Index trans fOr esene edisti 5 12 SAVE of fee EA TE 2 9 VIC Woot e E eR 5 6 Log file contents eee 2 26 what they are ceceeceeseeeees 2 3 Log operations ceeceeeeereees 2 26 WINKOW iasi ikenien 5 15 Logging Image batch processing c0 6 12 editinge peonnin 4 1 Importing oseni 2 18 M Inclined Rectangle eee 4 7 MENU OPTIONS 5 1 Information MSN 34 sc sct nacht tees nates ean 2 2 document i222cceciegiis ieee 2 24 Merging Input focus of window 2 21 SUIIPS eee See Keep strip Installation cise cccantiss ced 1 6 documents 6 10 ENE a EE 4 1 Mode J drag stamp sssseseeeeseeeesseeesee 4 12 PIM T A EE toe saagivetovecee 4 12 Joining toggle drawing se sesseeeeseee 4 10 scanned strips ceceeeeeeeeeeees 3 10 Mode scanner cceseeseeeseeees 3 5 Joining images 6 See Merging Monochrome eceeeee 2 14 2 27 K Monument widths calibration 3 17 Keep ertolSenenen eni 3 11 TEMOVAL iecesedseeceecsss cee cetseeetes 3 19 Keep strips ennenen isin 3 9 MONUMENIS eeeeeeeeeeeneeceteeeeeeeees 3 2 L Mouse USCA EEE 2 1 Layer Moving Selections csecee 4 18 ACHVE Loan enn siak 2 12 2 22 N active target eseese 2 23 adding new layers 2 17 Neutral cursor cccceesceeseeereeeeees
8. 8 bit Colour Scanning p 3 6 and the adjustment of colour data is treated in Colour Manipulation p 4 3 Transparency Within Deskan v7 1 the term transparency relates to one colour within each layer called the background that can be treated as transparent This makes it possible to view information that exists on layers that are below the current active layer To visualize this consider a diagram that contains three colours but has been produced with each colour being drawn on a separate piece of clear film When the pieces of film are overlaid the diagram appears complete In this case the film is transparent If however the three pieces of film were scanned into Deskan v7 1 then we would have the same information but the clear film is now white By defining the white in the scanned images as the background and switching transparency on we can then see the complete diagram Another colour that is related to transparency is called the base colour and is set for the document This is the colour that will appear in the image where all the layers in the document are transparent Again consider the three pieces of film in the above example If they were placed on a table then the base colour would be January 2009 Deskan v7 1 2 16 Fundamentals the colour of the table In normal usage with colour layers this would be set to white and the defined background on each layer would be set to white In this way any information on an
9. Left arm of the cross is distorted Error 7 Right arm of the cross is distorted Error 8 Combined top and bottom arms of the cross are distorted Error 9 Combined left and right arms of the cross are distorted Errors 4 through 9 all deal with the poor line quality see Line Quality p 3 12 The top right bottom and left identify which arm of the cross is in question In some cases the opposite arms of a cross are combined and used as a single line When this is done errors 8 and 9 may occur In this case it is the quality of both the opposing arms that must be considered Error 10 left side was impeded This error indicates that the left hand side of the scanner was physically restrained or failed to progress during the scan It can be detected in the image by the tick marks being more than 10mm apart This is because the scanner actually captures more scan lines than normal over the same distance Check that the scanning path is not obstructed and that the scanner tracks in a constant straight path along the guide Ensure that the cable does not cause any restraints also Another cure is to clean the wheels of the scanner by removing any accumulated dust It is up to personal preference as to whether the error should be ignored or the strip rescanned If ignored the final image will be distorted in this area Error 11 right side was impeded This is a similar problem to Error 10 but it has occurred on
10. Scanned image capture Output formats Threshold Interface Weight Portability Operating Environment Technical Specifications Scanner passes over the document Strips are scanned amp automatically joined 100 600 dpi AO E size 870 x 1260 mm Ability to scan oversized maps AO Colour 300dpi approx 5 7 minutes or faster 5 8 mm 24 amp 8 bit colour 8 bit greyscale amp B amp W All major formats including PCX BMP TIFF amp JPEG Interactice sliding scale USB 2 0 19kg approx Highly portable Windows 98 2000 XP January 2005 Deskan Express Color v6 0
11. The undo buffers are removed after a File Save and certain other operations described below Once the undo buffers are removed the Undo option is unavailable Redo Edit Redo undoes an Undo That is it re does the action that the last Undo undid This can be used up to the number of actions undone provided no other action is done in between Reloading The Reload operation re loads the current document from its source raster files stored on disk and any changes made since it was last saved are lost The Reload function operates in two ways depending on whether you have performed an operation which causes the layers of the document to be bound namely File Rotate File Skew File Flip File Crop to fence and File Scale If the document is bound then the command will reload all the layers of the document reverting the document to a condition prior to being bound If the document is not bound then the command will reload the active layer losing all changes since the active layer was last saved To reload a document from disk Select the menu option Edit Reload January 2009 Deskan v7 1 4 25 CHAPTER 5 MENU OPTIONS Menu Options Chapter 5 MENU OPTIONS This chapter provides a description of all the menu options describes the commands and also provides descriptions on intended uses and the best procedures to employ There are some commands that are not directly referenced in the earlier
12. This is the only editable field in this dialog box It allows the user to enter an output pixel size in World units Note that it accepts only one value The value is used to determine the width and height of the image in pixels by dividing it into the real world dimensions of the image Every image represents some real distance in inches centimetres or millimetres on paper on account of its scanning resolution Additionally if control points are defined in the image it can also represent a distance in World units on the ground If the output size of the pixels is changed using the Pixel Size field the destination extents will be immediately recalculated Increasing the output pixel size will result in fewer pixels in the output extent conversely reducing the pixel size lets Deskan v7 1 fit more pixels into the real world distance represented by the image The button labelled Default is alongside this field This button allows the user to quickly select an output size for the pixels which would result in an output image as close as possible in extent image height and width in pixels to the original based on the constraint that pixels will be assumed to be square Produce Control Points This toggle is used only by the File Transform to command If this checkbox is checked then the control points in the image will be transformed and added to the destination image The control points retain their original weights and World
13. You can scan a document from top to bottom or from side to side Figure 7 6 Motorized scanning 6 Press the purple Scan button to begin the scan Do not push the scanner It is motorized its speed is regulated and it rolls under its own power Guide the scanner toward you as shown by the arrow in Figure 7 6 Motorized scanning Keep the January 2005 Deskan Express Colour v6 0 7 4 Setting up the DESKAN 6 Scanner scanner straight on the page When you reach the end of the page press the Scan button again to stop and lift the scanner from the page 7 When you are finished reattach the scanner head by pushing it firmly and carefully straight down into its ADF see Figure 7 7 Attaching the scanner head Figure 7 7 Attaching the scanner head Smart Tips e Always make sure the scanner is attached to the carriage or in its calibration cradle before starting your computer or the Deskan Express application e When installing the scanner plug in the power connector only after all other connections have been made e Avoid pressing pulling or bending the black paper sensor on the front of the scanner e Keep the scanner away from direct sunlight and extreme heat e Place the scanner in a safe location on your desktop Do not allow it to fall or allow objects to fall onto it e Clean the scanner lens only with a dry soft lint tree cloth e Clean the rest of the scanner only with a damp cloth e Clea
14. A third way of toggling the zoom mode is using Deskan Express s Quick Keys facility Quick keys are a fast way of selecting main menu items with a single user defined keystroke A number of frequently used menu items have had Quick keys pre assigned for your convenience one of which is z which invokes the View Zoom In Out option Once in zoom mode make sure the cursor is on the image and click the left button to zoom further in and the right button to zoom out The portion of the image under the cursor at the time it was zoomed becomes the new centre of the view unless the cursor was too close to the edge of the image Canceling Zoom mode Cancel zoom mode by pressing the escape key or by reselecting the Zoom In Out menu options or by pressing the zoom Quick Key M The escape key has the added functionality in that it also removes any currently selected editing tool Zoom 1 and Fit There are two Zoom levels which are used frequently enough to warrant their own special commands these are Zoom level 1 Zoom 1 and the maximum negative zoom level Fit A zoom level of one means that one pixel displayed on the screen equals one pixel in the image data After selecting View Zoom 1 the cursor changes to the 4 inward arrows shape Place the cursor on any point in the current view and click the left button The view adopts a Zoom level of 1 centred if possible on the clicked point Zoom 1 is also available on the co
15. Save 3 Next the Transform Layers to dialog appears with a picklist of all the layers in the document so you can select the layers to be transformed In this dialog you can also select the format for each layer to be saved in Click Transform to initiate the transformation or Cancel to abort the transformation process 4 The transformation will begin creating anew document The new document can be opened in Deskan v7 1 for inspection It should be noted that these are not the simple transformations Scale Rotate Skew Flip Crop which only affect the current raster document The ReadOut utility also makes use of controlled transformations but does not generate any output file Document Merging Document merging is the production of a new image based on the content of two existing images The main purpose of this command is to enable scanning of documents too large to fit on the scanning base When this occurs the document is scanned as two separate documents then those two documents are merged to produce the whole In order to perform a merge both documents must be currently open within Deskan v7 1 B For the purpose of this discussion we will call one document the master document and the other the merge document The first step is to place markers see Control points and Markers p 6 2 in both documents to identify common points Focus into each document and select Transform Add Marker In the m
16. Scan Enter a file name that does not exist and press save Once the scanner interface has been loaded the Deskan Settings dialog is displayed allowing entry of initial settings Set the mode to 8 bit colour and resolution to 100 At this point the Brightness slider is disabled as it only applies to monochrome scanning Set the Scan Length to 300 mm and the number of colours Colours 64 256 needs to be set to 256 9 Scan the first strip using the command Scan Scan strip This will bring up the Omron Scanner on which the OK button is pressed 10 We will now derive a suitable palette by using the command Scan Derive Palette This command processes the current strip and modifies the documents palette so that it contains colours most suitable for the document being scanned 11 Open the Scan Settings dialog and you will notice that the Use the Document Palette checkbox has been checked This happens automatically when a palette is derived 12 Increase the resolution to 200 then close the dialog by pressing the OK button 13 Scan the first strip at the higher resolution by selecting Scan Auto Scan You will be prompted to confirm that the current strip is to be discarded Select Yes When the Omron Scanner dialog comes up you will notice that you are asked to position the scanner at the 300mm marks which is where it already is Select the OK button 14 Once the strip is obtained it will autom
17. and click the left button The view adopts a Zoom level of 1 centred if possible on the clicked point Zoom 1 is also available on the context menu Select View Fit or the Quick Key f The current view zooms out enough so that the entire image can be seen SCROLLING Another way of viewing the image is by scrolling panning the image Views can be scrolled using the scrollbars or by using the arrow keys There are horizontal and vertical scroll bars in each window Maximize the window which was not fitted in the previous step Drag the scroll boxes on the scroll bars to move the image smoothly Pressing the arrow keys also scrolls the current view but in discrete steps Holding down the Shift key while pressing the arrow key increases the size of the jumps depending on the zoom level and view size SAVED LOCATIONS A location that is a particular zoom level and image position can be named saved and recalled later Zoom and scroll one of the views so that any recognizable feature is visible Select the menu option View Save location A dialog titled Enter name to identify location appears Type in any name e g This_view and click OK Next scroll away from that location and also change the zoom level Then to restore the saved location select the menu option View Load location From the dialog Load locations to match select the name of the location you entered previously and click OK The orig
18. pointing and clicking or by dragged area How to Cut or copy fenced regions Operations p 4 13 DRAWING SHAPES See Drawing Tools p 4 How to draw shapes lines rectangles 5 and Tool Modifiers p circles arcs 4 10 Drawing tools can be modified to produce Stamping and Drag Stamping effects and in the case of the rectangles and circles a Fill mode can be invoked FREEHAND DRAWING See Draw p 4 5 How to draw freehand with the cursor PASTING See Pasting Operations You can insert a block of pixels into the p 4 15 raster image from another file or from the buffer either opaquely or transparently RASTER LAYER SEPARATION EXTENT RESTRICTION See Extent Restriction How to confine the extent of the pixels p 4 18 to be selected to a view or a fence SELECTING PIXELS See Selecting Elements How to select Pixels for cutting or p 4 19 copying by either pointing or dragging an area around them Selected pixels become highlighted TRANSFORMATIONS Deskan v7 1 can perform Helmert See Controlled Affine or Projective transformations to Transformations p 6 1 produce a new transformed raster document Controlled transformations do not affect the current document Setting up a transformation involves placing control points in the image and checking the resulting residuals before producing the transformed output file January 2005 Deskan Express Colour v6 0 A 5 APPENDIX B TUT
19. the final image as a single layer The size of the image being scanned can be controlled in two ways Using the radio buttons in the scan settings dialog the length of scanning can be changed between heights of 300mm 11 75 inches 600 mm 23 5 inches or 870 mm 34 25 inches Once the first strip has been kept all additional strips must be scanned at the same height The second control is the number of strips to be scanned This can range from one up to seven strips for the AO U S E size Deskan v7 1 system Before we can scan a document the scanning system needs to be set up Setting up for Scanning If you cannot leave the Deskan v7 1 equipment permanently assembled you will need to go through the following procedure each time you use Deskan v7 1 i a an fa sa Pat a gals we a ke L Pin a i a aay p ah a Scanning Dise ga aA Retaining Clip lt et a oe i o Ml as r i e E o eia T Bee h aO es Scanner Catch Carriage Assembly Figure 3 1 The components of the Deskan Express hardware January 2009 Deskan v7 1 3 1 Scanning Scanning Base Assemble Deskan Express by first placing the three piece interlocking backing panel called the Scanning Base on a stable flat surface free of any irregularities A drawing board can be used but should be adjusted to be level The scanning base comes in three separate parts that lock together similar to a jigsaw puzzle Position part A first on a flat even surface e
20. which do not affect the current document but rather create new raster documents containing the transformed raster image Before we discuss each of the simple transformations in detail the concept of Binding needs to be understood Binding The Simple Transformations can potentially change the extent of the image layers or alter the sense of the data in the image Because all layers in a document must have the same extent these operations first bind the layers together before transforming to ensure they are all changed together Binding can be thought of as stapling together loose sheets of paper which represent layers to keep them lined up and together Once a document is bound it is not possible to save individual layers You must either save or reload all the layers or none A dialog box appears just after selecting any of these operations for the first time warning that the selected process must bind the layers together so that the extents can be changed and that this will result in closed layers being opened and processed January 2009 Deskan v7 1 4 20 Image Editing the Undo buffers being cleared and any saved locations fences and control points being removed Saving modified layers Any modifications done prior to using one of the binding operations will be cleared from the undo buffer and therefore those changes cannot be undone Thus in order to be able to reverse the effects of
21. 0 0000 0 0000 0 0000 0 0000 0 0000 0 0000 7 0927 0 0000 0 0000 0 0000 0 0000 0 0000 0 0000 7 0918 0 0000 0 0000 0 0000 0 0000 0 0000 0 0000 7 0950 0 0000 0 0000 0 0000 0 0000 0 0000 0 0000 The above example shows a typical default calibration with each column showing the monument widths for each strip Widths of 0 0000 indicate that the measurements from the previous strip are to be used The procedure in the following section Calibrating the Monument Widths for a Strip can be used to add calibration information to any strip and the section labelled Removing Monument Widths on page 3 19 enables calibration information to be removed Calibrating the Monument Widths for a Strip 1 Prepare the scanner hardware by removing all documents so that the Scanning Guide is sitting flat on the Scanning Base on the strip to be calibrated The scanner is to be positioned at the bottom of the guide 2 Start Deskan Express and create a new scan document The name is not important as this document will not be kept but the scan document must be created as Black White mode with a resolution of 600 dpi and select a Brightness that produces a clear image of the control points The scan length must also be set at 870mm 3 From the menu select Scan Utilities Autoscan Monument Widths 4 Answer Yes to the dialog requesting confirmation to perform Recalibrate m
22. 100 dpi Measure the distance between the left edge of the image and the left vertical line containing the tick marks and the distance between the right edge and the right vertical line containing the tick marks If either of these is less than 3mm then perform an automatic margin adjustment 2 Perform the same test as for 1 but using some other mode and resolution If test 1 is good but this test fails then perform Setting the scanning Margins 3 Perform a test scan in the required mode and resolution If the scan is light on one side and dark on the other perform a Scanner Calibration If there are vertical bands of colour down the image perform a Scanner Calibration When this happens it is sometimes necessary to delete the file HS600 clb before re calibrating If there are thin vertical lines in the scan clean the lens of the scanner with a soft cloth Do not use abrasives or harsh chemicals 4 Ifadocument has been scanned but the quality of the joins is poor the cause could be one of the following If the document is thick or uneven in thickness perform Monument Width Calibration for each strip being used If the document is thin the problem is in computer performance in that the data was interrupted during transfer from the scanner to the program If other applications were January 2009 Deskan v7 1 3 15 Scanning running then close them If the problem persists then it may be nece
23. 4 13 A A AE Ske Ae ies 2 16 Fill Fence eee 4 15 Blank eee 2 17 5 1 Load Fence ceceeeee 4 13 Scan 2 17 3 4 3 7 5 1 Paste All from 000 4 16 OPeM or esesntecrece teeters cevees 2 16 Paste Transparent from 4 16 cancelling with Esc 2 17 re 4 26 Read Only c eee 2 16 Reload 0 00 4 22 reason for failure 2 16 Remove Fence 4 13 Page Setup 2 29 Saye Fence ee eeeeeeeeee 4 13 Fal ed Bee ee eee Cee eee eee ee 2 29 Undo eeta a 4 26 Rotate 0 00 4 23 Undo On Off 4 26 Run Batch 0 6 11 COLOUTS iii ie eieaa Ei 4 3 NAVE a a A 2 19 ICONS an e ai eae 5 3 Save AS eneee 2 19 IMA K E E 4 1 Seale 4 22 4 23 Element selection cccee 4 20 Set UDr E es 2 3 Ao ouere a Ei 4 6 Transform to 6 7 6 9 SIZE e ee E E E EE 4 12 ICONS eien eree piei 5 1 Errors inVeitnoescn rnaen 4 1 batch processing c 6 12 Ope ingrri nann ie 2 16 keeping seco tice tente 3 11 raster formats supported 2 10 scanning adjustments 3 15 reloading prre tense 4 26 Escape key Fill fencing 4 15 a special key sses 2 27 Fillim dese recientes 4 12 from autoscan ss seeseesseeeesee 3 14 Fit ZOOMING oseese 2 6 to cancel ZOOM eeeeeeeees 2 6 Flipping asenin 4 25 0 NEU Al eenen 2 2 Fly over hints 2 3 with batch runs ee eeeeeeeeees 6 12 Format
24. Colour Define Background and selecting a point on the white background January 2005 Deskan Express Color v6 0 B 5 Tutorials Tutorial 3 Selections Objectives To understand how layers are added to a document To understand Layer Separation using Selections This tutorial covers the opening of raster images creation of new layers selection and separation of raster elements into different layers by pointing and dragged area The aim of this tutorial is to create a two layered document from a single scanned engineering drawing The drawing contains a boundary and title box proforma the drawing linework and some text We will create a new layer then move the drawing and text to it The final multi layered document is then saved to disk Procedure 1 Open the raster file plans tif and maximize the window Note the title is plans plans meaning that both the document and the sole layer are called plans 2 Give it a distinctive colour by using Colour Drawing Colour Select and selecting green If the background has changed to green then the sense of the monochrome image needs to be reversed as Deskan v7 1 is treating the background as the data This if fixed by selecting File Invert 3 Open the ReadOut utility by selecting the menu option View Toolbars checking ReadOut and clicking OK Move it to a convenient position on the screen and ensure that Coordinates is selecte
25. Each colour is described by values for its red green and blue components This is referred to as the RGB for a colour and is commonly documented as RGB red value green value blue value The range of the value for each component is from 0 up to 255 with 0 meaning no contribution and 255 being maximum contribution The colour red is defined as RGB 255 0 0 meaning maximum red and no blue or green The number of entries in the palette for a 4 bit image is 16 while an 8 bit image contains 256 entries Besides the palettes that may exist within the layers we also have one 256 colour palette that exists within each document This complexity is reduced by ensuring that every colour that exists in a layer palette must exist in the document palette This means that there is at most 256 colours that exist within palettes within one document One restriction due to this is that a grey scale layer can exists in a document only if that document contains at least one grey scale layer and optionally monochrome layers The relationship between the document palette and layer palettes is always maintained resulting in the following actions When a layer is imported its palette is modified to match the document palette This is done in a way that minimizes the visual impact on the layer When a fence is pasted into a layer the data within the fence is adjusted to match that layers palette The manipulation of colour in relation to scanning is treated in
26. Fence facility reduces the extent of a raster document all layers to the bounds of the fence If a Polygon fence is used the image is shrunk to the bounding rectangle of the fence since images have to be rectangular and any pixels within this rectangle but outside the fence are erased Since this operation alters the extent of the document the layers are first bound together Because layer binding operations erase the Undo buffer the operation cannot be undone The user is therefore given the option of saving the document in its current form so it can be recovered again later if needed To crop a document to the fence 1 Position a fence to contain the data to be retained 2 Select the menu option File Crop to Fence 3 If there have been unsaved modifications to the document the Save layers before binding checkbox appears in the warning dialog If you do not wish to select layers for saving prior to the operation uncheck the checkbox If new layers exist within the document the checkbox is not displayed and a message identifying that new layers exist and will be saved is displayed Press Continue Cancel will abort the whole rotation process 4 Select any layers for saving from the Save Layers before Binding dialog if desired Click Continue to start the skewing process Cancel will abort the whole process Flipping Flipping refers to the mirroring of the image about its horizontal
27. For example large files in certain highly compressed file formats such as TIFF Group IV may take considerable time to load into Deskan v7 1 Creating a new blank document To create a new file from scratch select File New Blank or the equivalent icon A dialog titled Create New Document appears asking for values for image Width and Height in Pixels Resolution in Dots per inch bit depth as the number of bits per pixel and Layer Title There is also a toggle available to create the layer as grey scale Default values for these parameters of 640 480 200 8 bit non grey scale and New_Layer respectively are offered Edit the values if desired and click OK to accept A second dialog the Select Raster Document Name dialog prompts the user to input a new Raster Control File name select the directory to put it in and declare the name to be used Click Save A new blank window appears e If you specified the Width or height of the image to be greater than 65535 pixels you will not be able to select PCX format when saving B The format for the layers is defined when the layer is being saved A Raster Control File having the filename that was selected above and a RCF extension is created A raster file with the new document name and the extension appropriate to the selected raster file format is written out to disk on saving or closing Creating a new blank document for scanning into The menu option Fi
28. Guide was not properly positioned on the Scanning Base Correct the problem and rescan the strip Error 2 Could not find a horizontal line This error indicates that no horizontal line could be detected near the bottom of the image This is normally caused by having too high a Brightness when scanning a Black White image The problem is that the horizontal tick lines become obscured by the background noise causing the scanner to stop short leaving the bottom of the scan with just a fill pattern To fix the problem perform test scans reducing the Brightness until the tick marks are clean Another possibility is that the scanner was manually positioned at a start mark lower then the set length For example if the scanner was placed at the 300mm mark when the scan length is set at 600mm this error would occur This results in the scanner being obstructed at the bottom of the guide but still scanning until the image is filled Simply scan the strip again as this time it will scan from the bottom up and obtain the correct data Error 3 Could not find a vertical line This error indicates that no vertical line could be detected near the bottom of the image This is normally caused by the quality of the line being insufficient for detection Either darken the vertical line or rescan the strip January 2009 Deskan v7 1 3 13 Scanning Error 4 Top arm of the cross is distorted Error 5 Bottom arm of the cross is distorted Error 6
29. January 2005 Deskan Express Color v6 0 Index Transformations Affine e Seeker a R hed 6 4 control points sssseseeeseeeesseeeesee 6 2 c ntrolled keiers 6 1 Helm rt se sceseeeccecvesstatecccia 6 4 output settings eee 6 7 performing eee eee 6 9 Projective eninin 6 5 TASCED ses e r RR 6 1 6 9 residuals nnna 6 7 selectionner 6 6 SImMPle s angnin eiis 4 21 simple vs controlled 6 2 three uses OF eects 6 1 VPE Sa e ARE EER E 6 4 world units WU s eesseseeseeeesee 6 1 Transparency 2 15 Tut ridl isana eei B 1 DASI Sn race niece B 1 colour layers s s s B 5 Colour Scanning B 11 SCANNING scares cetera B 10 Selections ronen neii B 7 Tai n E E 7 1 calibration ss seseeseseesseeeesseeeesee 7 3 off base scanning ce 7 4 sheet fed scanning 7 3 OE SSE E easttiatrceette 7 5 Typographical Conventions 1 3 U Unbinding seseeeeseeeeseeseeserseese 4 26 Undo palette merging eee 4 4 raster editing eeeeeeeeeeee 4 26 Units World anonsai 6 1 pixels in smm cm WU 2 7 Use the document palette 3 6 v View CONMe re inne sate 2 5 Control oo eee eee ceeeeeneeeee 6 3 FAC Ses ose hones ena paGtoaheehae ees 2 6 Load location 2 9 B 3 Previous location 2 9 Save location 2 9 B 3 Status Bar eee 2 3 Todaro eee eeeeeeeeneeees 2 4 200M Vein t feces 2 6 Zoom I
30. Like the Views Current checkboxes these controls operate on the layer currently highlighted in the layer selection box The button Make Active is used to assign a layer to be a new active layer It works for any layer apart from the current active one Once a layer has been promoted to active it rises to the top of the list in the layer selection box swapping its place with the former active layer The button Make Target works in a similar way assigning any layer other than the current active layer to be the new Target layer If the current Target layer is highlighted the button reads Unset Target which would then undo the target assignment The target layer if one exists is always listed second in the layer selection box January 2009 Deskan v7 1 2 23 Fundamentals The button Close layer closes the highlighted layer releasing it from memory and if it had been modified prompting the user to decide whether to save the changes or not Once the layer has been closed the features in that layer disappear from all views The same button will read Open Layer if the selected layer is closed When the dialog box is first opened the checkboxes and status codes report the current state of the Layers and views Any alterations only take effect after the Accept button is pressed Displaying and Hiding Layers It is possible to display or hide any combination of layers by toggling the display pa
31. Outputting a fence to a file also produces a secondary file with the same name as selected but with an extension of adf This file contains a description of the fence used and is used with the paste from file option To cut data from fence and place into target layer 1 Select Edit Cut Fence to Target This option is only available if a Target layer has been defined For a detailed description of how the colours are mapped from the source image to the target image refer to Transferring Data between Layers on page 4 16 Copy Fence to The Edit Copy Fence to set of operations copy the data within the fence to either the Buffer new File or Target layer but unlike Cut it does not delete the data from within the fence To copy data from fence and place into memory buffer 1 Select Edit Copy Fence to Buffer The data remains held in the Buffer until the next time some data is placed there when the previous buffered data is lost To copy data from fence and place into a File 1 Select Edit Copy Fence to File 2 A file select dialog pops up for you to specify the file and format M Outputting a fence to a file also produces a secondary file with the same name as selected but with an extension of adf This file contains a description of the fence used and is used with the paste from file option To copy data from fence and place into target layer 1 Select Edit Copy Fence to Target January 2009 De
32. Sibeetv tke 3 2 TIPE EA hither 2 10 2 17 Toggle drawing mode 4 4 11 Toolbars eiaa rsa 2 3 docking seseseseeesrsersreeesssee 2 4 aE AEE 2 3 Tools Arc Centre Start End 4 9 Arc Start Centre End 4 9 Arc Start Edge End 4 8 Arc Start End Edge 4 8 Circle by Centre 0 4 7 Circle by Circum 4 8 Do Select Copy Selections 4 18 Delete Selections 4 18 In Fence eee 4 20 In View ocrck 4 20 Move Selections 4 18 Select by Point Area 4 21 Drag Stamp 4 12 SDI AW pe e eee cass ee 4 5 Drawing Mode 4 11 Drawing Size 4 5 4 12 SEQASCs hcs tiene aha 4 6 Rill ce asa 4 12 Inclined Rectangle 4 7 DING ested 4 6 Rectangle cc ceeeeeeeeeees 4 6 Stamp anneanne 4 10 NC ONS 2x35 shetty cate tats easels 5 8 modifiers 00 ee eeeeeeeeeeeeseeeeee 4 10 Tracking ccccecccsceesseesseeseeeseeeeees 2 8 Transferring data between layers cece 4 17 Transform AUG bes tes nara tates 6 2 6 3 Affine cocci eine 6 5 Delete sccnsc veces 6 3 Edit iu sci hie keira 6 3 Helmert 00 0 eeeeee 6 4 SLiSticccegAiene ev 6 3 a MOVE er reenn eiT 6 3 SOUU oe ilp 6 7 Projective nen eee cence 6 6 Residuals 0 0 eee 6 7 ACOMS EAEE R E EE 5 12
33. This mode of operation can be set but selections cannot be performed unless a target layer has been set Extent Restriction It is often desirable to restrict the extent of the selection The selection can be limited to the current view a fence or a dragged area or to the intersection of these The following table summarizes the interaction between different selection modes and extent restrictions January 2009 Deskan v7 1 4 18 Image Editing Extent Restriction method Select by Select only Select only Select only Select all Pointing pixels pixels pixels pixels in the connected connected connected image to the to the to clicked connected clicked clicked pixel by to the pixel and pixel by pixels in the clicked inside the pixels intersection pixel view inside the of the Fence fence and View Select by Select all Select all Select all Select all Drag Area pixels pixels in the pixels in the pixels inside the intersection intersection inside the dragged of fence and of fence and dragged area dragged dragged area area area To invoke an extent restriction 1 Ensure a fence exists so that the In Fence restriction is available 2 Select the checkable menu option Tools Do Select In Fence for restriction to fence and or 1 Select the checkable menu option Tools Do Select In View for restriction to the view or click on the equivalent icons e When using fences as extent
34. Transformations What do transformations do Transformations are a means of shifting rotating or stretching an image There are many cases when this is necessary For example a paper map may have undergone some shrinkage prior to being scanned In order to compensate for the shrinkage the scanned raster image could have a transformation applied to it to bring it back into the proper proportions Simple transformations such as rotation skewing scaling flipping and cropping can correct some distortions on the raster image However many types of distortion are too complex for these simple transforms to correct This is where controlled transformations are used Controlled transformations use control points to define the desired positions of certain image features in a new transformed image There are two uses for controlled transformation The first is Raster Transformation where a modified raster image is created and the second application is in generating the World coordinate display in the ReadOut utility Control points can be used to assign real world coordinates to features in the image which can be yo measured with the ReadOut utility s World Units option World Units The term World unit WU refers to the units of measurement meters feet km used on the original object in the image For example if the raster image was a small scale cadastral map then the World units appropriate to this map may be meters
35. V7 1 QUICK KEYS See Quick keys p 2 28 How to quickly access menu items with a single key stroke DISPLAY COLOURS OPERATION See Configuration LOGGING QUICK KEY MAPPINGS dialog p 2 26 ETC How to modify the display colours of various entities in the Deskan v7 1 application and other miscellaneous settings DOCUMENT INFORMATION See Document How to access information about a Information p 2 25 raster image VIEWING THE RASTER IMAGE ZOOMING THE IMAGE See Zooming p 2 5 How to get the best view of the image by Zooming magnifying or reducing the image SCROLLING See Scrolling panning How to get the best view of the image p 2 4 scrolling the image moving it around January 2005 Deskan Express Colour v6 0 A 2 Roadmap MANIPULATING LAYERS ABOUT LAYERS See Files Layers and For information about layers and how Documents p 2 11 they are used in Deskan v7 1 LISTING LAYERS See The View Settings How to see what layers there are ina dialog p 2 21 document ADDING NEW LAYERS See Adding new layers How to add new layers to a document to a document p 2 18 IMPORTING LAYERS See Importing raster files How to import a raster file as a new as new layers p 2 19 layer in a document How to set the Active and Target layers buttons p 2 23 MODIFYING THE IMAGE INVERTING NEGATING THE IMAGE See Invert p 4 1 If the background of an image is
36. as a command line parameter from a Windows command prompt or batch file e If the File Run Batch menu option is selected a warning appears stating that running a batch file may result in files being closed and these files will lose any unsaved modifications To avoid this loss select Cancel and save the documents concerned otherwise select OK to continue Another file opening dialog then appears from which the appropriate PBA file can be selected January 2005 Deskan Express Colour v6 0 6 11 Advanced Topics Deskan v7 1 will attempt to process all the commands in the batch file To interrupt batch processing and return to an interactive environment press the Escape key Errors An error in the context of Batch processing occurs when a serious problem arises and the entire batch process is cancelled even the Exit command is ignored An example is when closing a document fails Failures A Failure is a condition the batch processor adopts when a command cannot be executed for some reason for example a syntax error in the batch command or insufficient memory When a failure occurs then all following commands in the batch file are ignored until either EOF end of batch file is encountered EXIT the batch EXIT command see below or OPEN another OPEN command In other words batch processing tries to resume only if another document Open command is encountered in the
37. at all This restriction is enforced by the dialogs which appear when Exit is called while a bound document is loaded Printing The printing capabilities within Deskan v7 1 are controlled from the two menu options File Page Setup and File Print These two options provide the ability to scale and place the required output on the output page of any printer or plotter that has Windows 98 200 Or XP support By default a document will be printed at scale to the default windows printer so printing can be as simple as File Print and select OK Ifa fence is defined within the document then the required output is taken as being the fence contents If no fence exists then the entire document is printed The File Page Setup menu option offers a dialog that allows you to control the document scaling and placement It can be broadly split in two with the left side providing the control and measurements and the right side providing a visual feedback January 2009 Deskan v7 1 2 30 Fundamentals The main area in the centre of the graphic display comprises a dark colour inside a lighter rectangular area This lighter area Figure 2 15 The page setup dialog using paper units oo e printable area of the page and is in proportion to the size reported from the printer driver The darker colour inside this represents the area that will be printed the document output for each page The size and position of this will change as the controls are ch
38. being used its visual display will adjust to these changes To set the current line width and eraser size Press the or keys to interactively adjust the size In the former case no shift is needed even though normally requires the use of the shift key You can visually adjust the size with the keys until the cursor matches the width of some object January 2009 Deskan v7 1 4 11 Image Editing or Select the Tools Drawing Size menu option A dialog box appears with a selection of widths for the eraser and drawing tools The widths are shown in terms of image pixels It should be noted that the available sizes for the freehand drawing and erasing tools vary depending on the zoom level Fill This modifier applies only to drawing tools with closed shapes such as rectangles and circles Normally a drawn object appears as an outline of a predetermined line width With the Fill menu option on ticked the shapes appear as solid forms with no separate outline The line width field in the status bar displays a 1 indicating that the selected line width is being overridden in fill mode This is because it is not meaningful to consider line width when areas of pixels are to be drawn To select Fill mode Select the checkable menu option Tools Fill so that the check mark appears next time the menu is displayed To exit Fill mode Select the Tools Fill menu option again to remove the check mark Drag Stamp The Drag
39. best procedures to employ There are some commands that are not directly referenced in the earlier chapters These commands have obvious intended use and are fully described here Chapter 6 Having mastered the general use of Deskan v7 1 this chapter can now be referenced for performing more advanced topics The Controlled transformation provides a mechanism to remove the more complex distortions in an image as well the ability January 2009 Deskan v7 1 1 1 Getting started to reference and measure the image using real world values This works well for planar coordinates but does not provide a true geo referencing capability If the controlled transformation is being used to remove distortions then the process can be time consuming To reduce this problem the process can be performed overnight with the use of a special batch file This is also covered in this chapter Chapter 7 The scanner which comes with Deskan v7 1 is also capable of being used independently by other TWAIN compliant applications This chapter does not relate to Deskan v7 1 but explains how to use the scanner with other applications Appendix A Appendix A contains a roadmap which is an overview of all the functionality within Deskan v7 1 It is used in a manner similar to an index but is grouped by area of interest Simply scan the main headings for the area of interest and that group lists the capabilities and where they appear in the manual Appendix B Appen
40. black background and data pixels are pasted wiping out any data already in the area where it is pasted Edit Paste All from File This operation pastes the data held in a raster file so that both black background and data pixels are pasted wiping out any data already in the area where it is pasted Edit Clear Buffer This operation or its equivalent icon in the Edit toolbar eliminates any data stored in the buffer by an Edit Cut Copy Fence to Buffer Its purpose is to free up memory held by the buffered data View View Zoom In Out Enables zoom mode Left clicking zooms the current view in right clicking zooms out E View Zoom 1 Zooms the current view to a zoom level of one centred on the image point clicked _ View Fit Zooms the current view out sufficiently to fit the entire image into the window View Centre Centres the current view on any image point clicked upon View Refresh Updates the current view and closes off the current Operations List L View Previous location Returns the current view to the location just prior to the last Zoom scroll re sizing action January 2009 Deskan v7 1 5 6 Menu Options E View Load location Restores a previously saved location L View Save location Saves the location zoom level and image centre of the current view L View Settings Summons the View Settings dialog which provides layer manipulation functions and con
41. cceceeseereereeees 2 2 bidding 4 25 Context Menu delay setting 2 29 cl sing erenn 2 19 Control marks creating new blank 2 17 Keep ETrOTSi siini 3 11 MEENE enni 6 10 line quality nsss niri 3 12 palettes cccciatieccccvennssteticss 3 6 Control points 2 0 0 cceeeeseerereeees 6 2 reloading icnn 4 26 adding placing 6 2 6 3 resolutio Maneno 4 23 defining WU S eeseseeseseeeesse 6 1 saving closing se seeseeeeseeeee 2 18 deleting snan e a 6 3 Sea e E 3 4 deseripti ienninen in 6 2 SKEWIN penneres 4 24 displaying sna 6 3 What iSitit macion 2 11 edin oen nese ree ones 6 3 Dongle a eects 1 6 NSH Gatien 6 3 dots per inChis 2 8iviccdneecdveece 2 6 MOVING eo re tect 6 3 C0 0 Ree ee EN 2 6 Controlled Transformations Drag Stamp cceeeeeseceereeeneeeeees 4 12 performin ganesis enon 6 9 dragged area extent restriction 4 18 selection serpen eee 6 6 Dragging an area 4 20 YPES ana a n 6 4 Drawing what they do s seeessesseesseeeesse 6 1 COLOUM ESE 4 10 Copying Selections ce 4 18 PN EENE E E EAEE 4 12 Crop to Fence ssssssesesseeessseseesees 4 25 freehand s eee ete s 4 5 Current view s es 2 4 2 21 MOMS cesses dh sls asas 4 11 Cursor SIZ A ReGen ee tates 4 11 4 In Out Arrows cccceceeees 2 5 Drawing tools 4 inward arrows ooeec 2 5 Arc Centre Start End 4 9 different shapes eee 2 2 Arc Start Centre End 4 9 neutra
42. chapters These commands have obvious intended use and are fully described here Any icons associated with these options are also shown illustrated alongside the option File _ File New Blank Create a new blank document File New Scan Create a new Deskan document for scanning File Open Ctrl O Open an existing document or free raster file E File Close Releases an opened document from memory and any modified layers are offered for saving _ File Save Ctri S Lets the user save selected modified layers in the current document back to disk but the document remains open File Save As Save a selection of layers from the current document as a new document A different image format can be selected if required File Merge Document Merge another open document with this document and produce a new raster file File Set Up Summons the Configuration dialog to alter display colours configure Quick key mappings enable the Save Views option enable the Log operations option set the default resolution set Context menu delay January 2009 Deskan v7 1 5 1 Menu Options File Info Summons the Document Information dialog which shows a complete profile of the current document File Modify Resolution Edit Offers the ability to change the stored resolution of the image This command is meant for the correction of incorrectly stored resolution therefore it has no other functionality
43. dynamic arc will always pass 4 Click the left button to fix the second point in place A dynamic arc now joins the start point and current cursor position and passes through selected circumference point 5 Move the cursor to place the end of the arc in the required position 6 Click the left mouse button to fix the arc in place 7 A dynamic arc now begins at the end point and stretches to the current cursor position Clicking the left button will select another circumference point A chain of arcs can thus be built up in this manner 8 Click the right button twice to free the cursor of the dynamic arc January 2009 Deskan v7 1 4 8 Image Editing 9 The right mouse button can be used at any stage to reset to the previous state as described in the status bar Arc Centre Start End Draws an arc using the first point picked as the radial centre point then start and end of the arc VM For the arc by Centre Start End arcs are always drawn from the start point clockwise to the end point To draw an arc by Centre Start End 1 Select the checkable menu option Tools Arc Centre Start End The cursor changes to a cross over a solid square with the square representing the size of the defined line width 2 Click the left mouse button on the point to be the centre point of the arc Make sure left button is released A dynamic circle stretches from the centre point to the current cursor position 3 Move cursor to select a starti
44. easier to understand why the application behaves the way it does Image Sizes One of the most surprising things to new users is the size of the images that are used within Deskan v7 1 Even when dealing with monochrome images the memory requirement will rapidly increase as either dimension is increased Using larger bit depths will further compound these requirements Figure 2 1 illustrates the size of the image when held in memory for large AO US E size images The size of the image when stored on disk can differ dependent on the data content and the compression scheme used It is important to be aware of these sizes as they reflect the amount of data that gets transferred within the system during processing and therefore have a dramatic influence on performance A0 U S E Size Images i all Resolution dpi Depth 100 400 Figure 2 1 Memory Requirements in Mb for an AO Image 49 61 inches wide and 34 25 inches high Deskan v7 1 Application Window The Deskan v7 1 Application Window is the main window which opens when Deskan v7 1 is started It contains a main menu bar across the top of the window from which all the functions of Deskan v7 1 can be invoked The main working area of the application window is where the client windows containing different views of a document are confined See Figure 2 2 p 2 2 Mouse usage Deskan v7 1 supports any Windows compatible mouse The left button is used
45. for selecting dragging and controlling drawing tools such as the free hand drawing pen and eraser The right button is used as a reset button a way of zooming out of the image and as a means of summoning a popup context menu See Context menu p 2 2 The scroll wheel allows zooming in and out January 2009 Deskan v7 1 2 1 Fundamentals jie Cet Een Express phesinduzinal Be Gee kimsa a Tae fea panien ate Dee Tals ale A Ia E1 phot irprun Figure 2 2 Deskan v7 1 Application Window Note the context menu in centre of screen Cursor types There are several different cursor shapes depending on the current tool or operation A Normal cursor see Figure 2 3 a is used for general pointing performing selections and defining fences To remove all functionality from any cursor to establish a neutral cursor press the Escape key we R I i OAR Am T im ch tc cd Figure 2 3 Examples of cursor types a Normal neutral cursor b Zoom 1 Centring cursor c Zoom In Out cursor d Drawing tool cursor Note the square at the centre representing linewidth Menus As in standard Windows applications functions are invoked by a chain of menu selections In this manual we will refer to a Deskan v7 1 function by the sequence of menu items which need to be selected for example the View Settings dialog The main menu bar across the top of the Deskan v7 1 Application window invokes oth
46. in the layer excluding the layers background colour As a second example let us consider cutting a fence from the active layer to the target layer The Active layer is an 8 bit colour layer with the background as green Inside the fence the colours red and blue also exist The target layer is a monochrome layer with the drawing colour as black and the background as white When the command is executed the green in the active layer will map to the white background of the target and the red and blue of the active layer will both map to the black drawing colour of the target layer Because it is a cutting command the area inside the fence on the active layer will be set to the background colour green As can be seen from this all the data from the active layer has been retained This process guarantees that no data is lost but the quality of the paste operation depends on the degree of compatibility between the two palettes involved Layer Separation with Selections B In this version of Deskan v7 1 the selection tool can only be used with monochrome layers Introduction When a raster image file is first opened in Deskan v7 1 it can be thought of as a single layered document All the raster features elements exist on the one logical plane It is often useful to be able to separate out certain raster elements and place them in another layer This process is called layer separation For example all text characters in the raster image
47. into the dialog box Click OK Note that a value of 1 for either the X or Y factor allows scaling of the other axis only 3 If there have been unsaved modifications to the document the Save layers before binding checkbox appears in the warning dialog If you do not wish to select layers for saving prior to the operation uncheck the checkbox Mi If new layers exist within the document the checkbox is not displayed and a message identifying that new layers exist and will be saved is displayed Press Continue Cancel will abort the whole scaling process 4 Select any layers for saving from the Save Layers before Binding dialog if desired Click Continue to start the scaling Cancel will abort the whole scaling process Resolution Conversion and Editing Within all images there is a resolution that relates the image dimensions back to the real world size that it was derived from Deskan v7 1 uses this information to reference sizes in real units like millimeters centimeters and inches These are referred to Paper Units and an example of their use can be found in the printing section see Printing p 2 30 In some cases the value stored within the image may be in error so a menu command File Modify Resolution Edit has been supplied This is a very simple command that requests a new resolution and replaces the value If however a new image is required at a different resolution but the resolution in
48. measure over 11mm indicates this as the problem The solution is to identify what impeded the scanner and ensure it does not happen again then rescan the strip Typical causes are having the cable dragging across the edge of the table or having too many applications running on the computer 2 The scanner stopped then restarted while directly over the tick This causes the scanner to rock slightly and is sometimes sufficient to hide the tick mark altogether This can be identified by the expected location being half way between two ticks which are approximately 20mm apart The solution is the same as described in the previous paragraph If the expected position is towards the centre of the image from the tick marks then one of the four Control Crosses could not be found Again there are two main causes 1 If the expected location is a multiple of 10mm above or below where the Control Cross exists then the problem is actually with the tick marks Go to the bottom of the image on the side where the error occurred and check that the tick marks at the bottom were detected If they weren t found then check the quality of the lines for evenness and darkness If they were found then it is possible that one of the tick marks along the edge was missed Scroll up the image checking that every tick mark has a corresponding marker displayed 2 If the expected position is adjacent to the Control Cross but to the left or right of it then the Scanning
49. of the defined line width 2 Click the left mouse button on the point to be the starting point on the arc Make sure left button is released A dynamic line stretches from the starting point to the current cursor position 3 Move cursor to place the arc s endpoint at the required position 4 Click the left button to fix the endpoint in place A dynamic arc now joins the start and end points and passes through the current cursor position 5 Move the cursor to obtain the required arc shape 6 Click the left mouse button to fix the arc in place 7 Click the right button twice to free the cursor of the dynamic arc The right mouse button can be used at any stage to reset to the previous state as described in the status bar Arc Start Edge End As per Arc Start End Edge above but the order of points differs The first clicked point is the starting point and the second is a fixed point through which the arc will always pass as it makes its way to the end point To draw an arc by Start Edge End 1 Select the checkable menu option Tools Arc Start Edge End The cursor changes to a cross over a solid square with the square representing the size of the defined line width 2 Click the left mouse button on the point to be the starting point on the arc Make sure left button is released A dynamic line stretches from the starting point to the current cursor position 3 Move cursor to select another circumference point through which the
50. on the ground If the image is a mechanical drawing then millimetres may be the World unit Thus a line of pixels in the raster image symbolizes a distance in the real world for example 200 pixels in the scanned map may represent 1000 meters on the ground The way Deskan v7 1 is informed of the size of the area that the pixel represents on the ground is through the control points Control points contain two pairs of coordinates their pixel coordinates in the image and the World coordinate that the control point represents Placing at least two control points into a raster image and selecting a transformation effectively fixes the World coordinate axes and scale It is then possible to measure distances in the image in World units using the ReadOut toolbar January 2005 Deskan Express Colour v6 0 6 1 Advanced Topics Comparing Simple and Controlled Transformations Controlled transformations are distinguished from the simple transformations in a number of ways The controlled transformations Helmert Affine and Projective use control points to define the transformation Simple transformations such as rotation skewing scaling and flipping do not use control points Simple transformations consider all layers of the current raster image whereas controlled transformations can transform a selection of layers The results of Simple Transformations are output to the current document whereas the results of Controlled Raster Transformat
51. or by using Quick Keys When a Scan Document is created or opened the scanning options are available A document remains a scan type document until the strips are joined and image acquisition is complete at which time it becomes a standard Deskan Express document The normal sequence of operations to produce a large format scan is Assemble the Scanning Base carriage and scanner with the drawing to scan Start the Deskan v7 1 software Run a few test scans to adjust settings Scan the left most strip Keep that strip Repeat steps 4 and 5 for as many strips as are needed Run the Join operation Save the joined sheet image ANAT WNP Starting a scanning session with Deskan Express Start Deskan v7 1 and create a new Deskan document using File New Scan menu option Select a document name and suitable settings in the Deskan Settings dialog box When selecting the resolution keep in mind that a higher resolution will result in a more accurate image but the scanning will be slower and the file size larger Once the new Scan Document is created the Scan menu options and Scanning toolbar become available Setting Brightness for monochrome scans The scanner sensors are like any camera they need to be adjusted to fit the light levels under which they operate This is done by adjusting the Brightness setting using the controls in the Scan Settings Deskan Settings dialog box or
52. scanned document for each subsequent scanning session For a step by step description refer to Tutorial 4 Monochrome Scanning and Tutorial 5 Colour Scanning The Scan Derive Palette menu option will automatically check the Use the document Palette checkbox The number of colours option can be used to control the number of colours that the image is reduced to The maximum is 256 for an 8 bit image however this number can be reduced down to any number of colours between 64 and 256 colours When the number of colours is reduced below 256 then the derived colours are placed into the document palette from the first entry up to the number of required colours The remaining entries in the document palette will contain January 2009 Deskan v7 1 3 6 Scanning those colours that were in the original document palette but furthest from the derived colours VM It is however strongly recommended that 256 colours be kept as it retains as much of the original information as possible and there is no performance or storage gain by having a lower value Scanning Thick Documents When scanning small thick documents insert spacers of the same thickness under the Scanning Guide so that all of the Scanning Guide is flat and parallel to the Scanning Base This will minimize any random distortions and provide a better result Scanning a Drawing The five scan functions can be selected from either the menu the Scan Toolbar icons
53. selection by 4 20 lOad se hie ati 2 9 Polygon fence siori 4 13 Previo Srani neien ninie 2 9 Positioning January 2005 Deskan Express Color v6 0 l 4 Index SCANNER 252 3 esses ea Hideto hehehe 3 3 Saved locations 000 2 9 B 3 scanner guide 3 2 Scaling sene an E aes 4 22 Previous location See Locations Scan Printer Derive Palette 3 6 B 11 paper units ssseeseeseeseeee eseese 2 31 Discard Strip 0 3 14 selection eocenie 2 30 OMNI 6502S st secede tae ta ate thes 3 10 world units 2 30 Keep Strip 00 0 0 eee 3 9 Printing scenei 2 29 Scan Strip 3 9 fenced areas 2 29 Settings 0 eee 3 7 Justification eee eee 2 30 ICONS bee coves gateeseestecetes setantaus 5 14 Pale set p inerisinn minake 2 29 Scan document 3 4 Produce Control Points 6 9 Scan Lengthesseciiecniiiiii 3 5 Proj eCtiVes lt icc scsts niini 6 5 Scan Settin g8 e 32 sccscceteeeeteneesees 3 7 Q Scan toolbar cceeeeeeeseeeteeeees 3 7 SCANNER oeer o E a 3 1 Quick keys cccecceecseeteeeeeteeesees 2 27 ASSEMBLY scien ee tenes 7 1 R Calibration cceeesesteeseees 3 17 CONMECCHION ce eeeeeeseeteeeeeeeeeees 7 1 RAM ieee eee ae 1 4 PE a e e E E ees 3 2 Raster Control File ce 2 11 POSITIONING 00 ee eeeeeeeeeeeeees 3 3 contents Of RCF ccceeees 2 11 removing base 3 4 when not kept s sesseeseeeeseeeee 2 12 Scanni
54. steps below for automatic scanning see Autoscan on page 3 15 1 Select Scan Scan Strip from the main menu or the equivalent icon 2 Follow the instructions on the dialog about where the scanner needs to be positioned This will always be the bottom of the guide on the left strip for the first scan of a document but after that it will depend on what actions have been taken There is a small graphic representation of the start position displayed on the dialog which changes to show the correct position During normal scanning the scanner should not need to be moved from its stopping position when strips are saved After positioning the scanner make sure the movement path is all clear so the cables will afford free movement and the L pin is perpendicular to the Scanning Base then press the start button on the scanner s dialog or the purple button on the top of the scanner The scanner will then scan the entire strip and stop when the correct amount has been scanned If the scanner fails to start and the condition Could not confirm scanner start position is displayed then the scanner was not positioned correctly see Scanner Positioning p 3 3 or the guide is not properly positioned on the Scanning Base 3 Check that the strip appears to be complete and accurate If data is too faint you may wish to make adjustments and re scan the strip You will see that the image includes the Control Crosses above and below the st
55. stretch the fence around the desired region Don t try to hold the button down and drag 4 Click again to fix fence in place Polygon Fences A Polygon fence is an irregularly shaped boundary which you build up in segments surrounding the area of interest The segments of a polygon fence may not cross so for example figure eight shapes are not possible To Place a Polygon Fence 1 Select Edit Define Polygon Fence or the equivalent icon 2 Start the fence by left clicking on a point on the desired boundary Each subsequent mouse click fixes a new vertex up to a maximum of 60 3 Complete the Polygon fence by fixing the last point onto the first closing the polygon The colour of the fence will change from the highlight colour to the overlays colour when the cursor is near the starting point 4 While placing the fence the right button can be used to back out of the placement in a manner similar to the editing tools Removing Fences To remove a currently active fence 1 Select Edit Remove Fence Saving and Loading Fences Deskan v7 1 allows only one fence to be active at a time but a fence can be named saved and recalled later into the same raster file To name and save a fence 1 Select Edit Save Fence 2 Enter a name for the current fence in the dialog box It must be no more than 20 characters with no spaces or commas 3 Click OK to save To recall a saved fence 1 Select Edit Load Fence
56. the right hand side The same analysis and options are valid Error 12 Scanning width deviated As the Scanning Guide is on top of the document being scanned adjustments must be made to cater for the varying thickness of documents It is however assumed that the thickness of the document is consistent This error indicates that this is not the case A typical cause is to be scanning a document which has a suspension strip attached to one end This makes one end of the document thicker than the other The solution is to obtain a piece of thin cardboard or film that can be placed under the document not under the suspension strip When this is done the Control Crosses at the top and bottom must still be visible The result is that the top of the document is held against the guide and the document thickness is consistent Discard strips The Scan Discard Strip option discards all saved strips and is equivalent to having just created the Scan Document Resuming a scanning session On resuming Deskan Express use File Open to load the Raster Control File for the Deskan document Deskan v7 1 recognizes a Scan Document and will automatically allow further strips to be scanned Deskan documents are distinguished by their January 2009 Deskan v7 1 3 14 Scanning view windows having a title of the form document_name no data as opposed to the normal Deskan v7 1 convention of document name layer name It is impor
57. user to adjust the approximate time delay in milliseconds between pressing the right mouse button and the appearance of the popup context menu The Long Process Warning Factor gives you the ability to back out of potentially long operations It works by displaying a warning dialog when a selected activity is calculated to exceed this factor From this dialog it is possible to cancel the command or continue The actual value has no unit of measurement as it attempts to account for image size processor speed and type of operation Values typically range from 4 to 10 If the dialog is appearing too often for operations that are satisfactory increase the value and if long operations are being starting that you wish to be warned about reduce the value Terminating Deskan v7 1 The File Exit operation causes Deskan v7 1 to terminate and return to the operating system Any unsaved modified layers are presented in a dialog so they can be selected for saving if desired Saving means to update the original raster file with the latest modifications or saving to disk any new layers While this dialog is displayed it is possible to change the format that each layer is saved in by selecting the layer then selecting a format from the list at the bottom of the dialog The list will contain only those formats that the selected layer can be saved in If a document has been bound then either all of its layers must be saved together or none
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59. 2 Select the fence name from the dialog box pick list 3 Click OK to recall the fence Fences in the pick list can be deleted using the Delete button Fence Edit Operations These raster editing operations use the fences to manipulate the data in the image The Deskan v7 1 Buffer Some fence operation utilize the buffer This buffer is not the Windows Clipboard January 2009 Deskan v7 1 4 13 Image Editing Only one buffer is used by Deskan v7 1 so it is shared between documents Therefore data can be transferred from one document to another via the buffer e The buffer uses memory so keeping a large amount of data in the buffer can affect performance B If a large area has to be moved to the target the fence operations are much faster than using selections Cut Fence to This operation removes cuts all data from within a fenced area and places it either into the Buffer a new raster file or the Target layer depending on the sub option chosen To cut data from fence and place into memory buffer 1 Select Edit Cut Fence to Buffer The data remains held in the Buffer until the next time some data is placed there when the previous buffered data is lost To cut data from fence and place into a File 1 Select Edit Cut Fence to File A file selection dialog pops up for you to specify the file and format This is useful for dividing very large jobs to speed up the response time while working M
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61. 2 25 by selecting the File Info menu option If multiple documents are opened the document in the current view will be the one examined Document information 3 Hearne eii datanpa Ape wah Peel Age Haigh Frek 2080 F etokiian ded 200 M brani pma e Tit CCITT GA Ga Prefers plant Stl 1 THECITT GC prewee plang 3 E Tetonly pao 1 Tif CCITT BA Humbera Laven 4 Maman bies 2695 600 Figure 2 10 The Document Information Dialog The Name display field in the Document Information dialog contains the path and filename of the document s Raster Control File Width Height and Resolution show the extents of the raster images in the document and their resolution in dots per inch There is a list box in the dialog containing five columns with each row describing one layer within the document The columns are Title which shows the user defined name of each layer Data File is the name of the raster file in which the layer is stored on disk Depth describes the number of bits per pixel and whether the layer is grey scale Format shows the raster image format and Original Source which is the name of the raster file if any which was imported to form the layer Finally there are two fields titled Number of layers which is the number of layers in the document and Memory bytes showing the memory resources currently consumed by all open layers in bytes If the cu
62. Configuration dialog Highlight defines the highlight colour of any selected element whether they be graphical overlays such as control points or selected pixel elements Overlays defines the colour of the graphical overlays such as the fence control points and tracking box Log operations Another checkbox labelled Log operations enables the logging of operations in the log file The log file is an ASCII format file which records informational messages generated during Deskan v7 1 sessions This file is called Deskan50 log and is formed in the same directory as the executable file It records openings and closures of documents transformations and errors etc Logging is always on when in Batch Mode see Logging Batch Commands p 6 12 and errors are always logged Operations are appended to the log file so it should be periodically cleared of unwanted information Contents of the Deskan v7 1 log file The log file records a number of details about the Deskan v7 1 session Application Start Stop Logging Start Stop Creation of new blank documents Creation of new Deskan documents Layer name changes Saving a document under a new name File Save As Raster transformation File Transform to Residuals output Creating a new layer Layer New Blank Importing a new layer Layer New Import Exporting a layer Layer Export January 2009 Deskan v7 1 2 27 Fundamentals Re
63. Deskan v7 1 Version 7 1 User Manual Shapemakers January 2009 The information and the software described in this document are subject to change without notification and should not be construed as commitments by The Shapemakers for any errors that may appear in this document The software described in this document is furnished under a licence and may be used or copied only in accordance with the terms of that licence Copyright 1991 2005 Shapemakers 29 Kensal St Moorooka Q4105 Australia Portions of the imaging technology of this product are copyrighted by AccuSoft Corporation Internet http www theshapemakers com Telephone 61 0 7 3848 7371 Facsimile 61 0 7 3848 7373 Trademarks Deskan Express is a trademark of the Shapemakers group ProVec is a trademark of SInclair Knight Merz Pty Ltd Microsoft MS DOS Windows and Windows NT are registered trademarks of Microsoft Corporation Pentium is a registered trademark of Intel Corporation All other trademarks mentioned in this manual are the property of their respective trademark holders Contents Table of Contents Chapter 1 GETTING STARTED 1 1 About the Manual 1 1 About Deskan v7 1 1 4 System requirements 1 4 Installation 1 5 Starting Deskan v7 1 1 5 Chapter 2 FUNDAMENTALS 2 Introduction 2 1 Files Layers and Documents 2 11 Colour Palettes and Transparency 2 15 Opening Documents and Layers 2 17 Printing 2 30 Chapter 3 SCANNING WITH DESKAN EXPRES
64. ORIALS Tutorials Appendix B TUTORIALS These tutorials are provided to help you become familiar with Deskan v7 1 New features are marked with an asterisk e g Colour basics Tutorial 1 Deskan v7 1 Basics Objectives To gain an understanding of the basic features of Deskan v7 1 This tutorial gives an overview of the features and fundamental concepts needed to operate Deskan v7 1 effectively It makes use of one of the example documents mechan supplied on the distribution disks Procedure 1 Start Deskan v7 1 from Windows 2 STATUS BAR The status bar appears as a strip along the bottom of the main Deskan v7 1 Application window and provides useful information about various aspects of the session such as the zoom level and the current action To toggle the display of the status bar select the checkable menu option View Status Bar 3 OPENING FILES Now we will open a raster image Select the menu option File Open The file opening dialog will appear 4 Set the Files of Type selector to All Files so that files of all types are listed in the dialog 5 Note the files mechan rcf and mechan tif listed in the file list The mechan tif file is a raster image whereas mechan rcf is an ASCII text file containing configuration data used by Deskan v7 1 when working on the image Together these two files constitute the mechan DOCUMENT Select either of these file to open
65. S 3 1 Setting up for Scanning 3 1 Scan Documents 3 4 Scanning a Drawing 3 7 Adjustments 3 15 Care and Maintenance 3 20 Getting Assistance 3 22 Chapter 4 IMAGE EDITING 4 1 Introduction to Raster Editing 4 1 Invert 4 1 Colour and Depth Reduction 4 3 Colour Manipulation 4 3 Drawing Tools 4 5 Tool Modifiers 4 10 Using Fences 4 12 Pasting Operations 4 15 Transferring Data between Layers 4 16 Layer Separation with Selections 4 17 Simple Transformations 4 20 Chapter 5 MENU OPTIONS 5 1 File 5 1 Edit 5 3 View 5 6 Layer 5 7 Tools 5 8 Colour 5 9 Transform 5 12 Scan 5 13 Window 5 15 Help 5 15 Chapter 6 ADVANCED TOPICS 6 1 Controlled Transformations 6 1 Document Merging 6 10 Batch processing 6 11 Chapter 7 SETTING UP THE DESKAN SCANNER 7 1 Before You Begin 7 1 Assembling the Scanner 7 1 Connecting the Scanner 7 1 Calibrating the Scanner with Deskan 7 2 Calibrating the Scanner using the Twain Interface 7 3 Using the Scanner Sheet Fed Mode 7 3 Using the Scanner Motorized Mode 7 4 Smart Tips 7 5 Appendix A ROADMAP A 1 January 2009 Deskan v7 1 Contents Appendix B_ TUTORIALS Tutorial 1 Deskan v7 1 Basics Tutorial 2 Colour Layers Tutorial 3 Selections Tutorial 4 Monochrome Scanning Tutorial 5 Colour Scanning Appendix C GLOSSARY January 2009 Deskan v7 1 B 1 B 1 B 6 B 9 B 10 C 1 Contents Figures Figure 2 1 Memory Requirements in Mb for an AO Image 49 61 inches wide and 34 25
66. Stamp operation modifies the behaviour of the stamp tool allowing the shape of the selected drawing tool to be used like a brush as it is dragged with the left button held down A trail of closely stamped images is left behind To select Drag Stamp mode Select the checkable menu option Tools Drag Stamp so that the check mark appears next time the menu is displayed To exit Drag Stamp mode Select the Tools Drag Stamp menu option again to remove the check mark Using Fences A Fence is a rectangular or polygonal boundary used to define an area that will be affected by some editing actions The fence itself is a graphical overlay it does not become a part of the actual data even though it appears in the image Fences are drawn by mouse action In Deskan v7 1 fences can be given a name and saved for future use There can only be one fence active per open document at one time and any existing fence disappears when you start to define another The fence will remain in place relative to the raster image regardless of subsequent zooms and scrolling Box Fences A Box Fence is a rectangular fence with horizontal and vertical sides January 2009 Deskan v7 1 4 12 Image Editing To place a Box fence 1 Select Edit Define Box Fence or the equivalent icon 2 Click left mouse button on a point in the image to be used as a corner A rubber band rectangle attaches to the cursor 3 Release the button and move the cursor to
67. Transform Affine Projective This is an eight parameter transformation that requires a minimum of four control points It is used to compensate for paper and film deformations and refraction It can perform all the manipulations that the Affine transform can as well as a form of rubber sheeting a term used to indicate how different parts of the image are stretched by different amounts see Figure 6 3 p 6 6 January 2005 Deskan Express Colour v6 0 6 5 Advanced Topics Data rectified by the transformation Original data a prior to transformation Figure 6 3 The Projective Transform The dashed lines extending from the control points indicate the relative positions of the World coordinates of each control point To select the Projective transform Place at least four control points in the image Select the checkable menu option Transform Projective Transformation Selection Selection of the appropriate transformation type is based on the distortions known to exist in the original data and the capabilities of the three transformations The following table lists various kinds of image distortions which commonly occur and the transformation type which can rectify the distortion DISTORTION HELMERT AFFINE PROJECTIVE TYPE translation movant Ve Axes not amoa r i fam scaling Differential XY aime YL Varying localized scaling along the X or Y axes While no hard and fast rules can
68. When these layer palettes exist every entry within them will have a matching entry within the document palette Editing Layer Palettes Layer palettes can be directly edited using Colour Edit Layer Palette When this is used a single click on an entry will select that entry and provide details as to the colour intensities and palette index for both the layer and document palette Double clicking on an entry or pressing the edit button for the selected entry will offer the document palette so that an alternate entry can be used for pixels matching that value This provides a mechanism for altering the appearance of a layer without having to locate individual pixels to change but must be used with care as every pixel within the layer matching that entry will change even if it is not in view January 2009 Deskan v7 1 4 3 Image Editing Getting Information about pixels A tool has been provided under the command Colour Measure Pixels which makes it possible to interrogate the image to obtain colour information Once selected a single press will provide both the colour and palette information for the selected pixel By pressing and holding the left button then dragging it to define a rectangular area it is possible to obtain the average colour values for the area and the palette indexes for the colour nearest to the average interactively manipulating the layer palette Vv This tool is not available for monochrome or 24 bit layers as t
69. X World Y coordinates Only their pixel coordinates will have changed Performing a Controlled Raster Transformation When you perform a Controlled Raster Transformation you are prompted to select anew output Raster Control File name It is not possible to store a transformed file onto itself Once the name is selected you will be further prompted to select which layers you wish to transform and save into the new document This dialog is provided even if there is only one layer as it also provides the opportunity for the format for each layer to be selected To change the format for a layer simply select that layer then pick a new format from the picklist at the bottom of the dialog This needs to be done before you select which layers to transform You can make a selection of layers from the pick list in the dialog box by clicking on each layer you want while holding down the Control key Each selected layer is transformed and will form a layer in the new document To ensure no errors have been made in control point placement you should first check the residuals of the transformation using Transform Residuals and the output pixel size image extents and resolution should be checked using the Transform Output dialog 1 Select File Transform to January 2005 Deskan Express Colour v6 0 6 9 Advanced Topics 2 The Transform to Document dialog appears for you to select a name for the new document a rcf file Click
70. a new free raster file i e not part of a document Edit Copy Fence to Target Copies all data within a fenced area and places it into the Target layer L Edit Clear Fence Inside Deletes the contents of the fence in the currently active document that is the document which has one of its views in focus L Edit Clear Fence Outside Deletes the data outside the fence in the currently active document that is the document which has one of its views in focus _ Edit Fill Fence Inside Sets the area inside the fence in the currently active document to the current foreground colour _ Edit Fill Fence Outside Sets the area outside the fence in the currently active document to the current foreground colour B There is a slight difference in the command syntax between the menu option and icon forms of the Pasting operations See Pasting Operations p 4 15 Edit Paste Transparent from Buffer This operation pastes the data held in the Buffer so that both the original data and the pasted data are superimposed Effectively the data pixels are pasted only January 2009 Deskan v7 1 5 5 Menu Options Edit Paste Transparent from File This operation pastes the data held in a raster file so that both the original data and the pasted data are superimposed Effectively the data pixels are pasted only Edit Paste All from Buffer This operation pastes the data held in the Buffer so that both
71. ages In many CAD packages a single drawing may contain multiple superimposed layers with each layer holding a different subset of the vector elements in the image January 2009 Deskan v7 1 2 11 Fundamentals In Deskan Express multiple layers are implemented as separate raster files of equal extents Layers should not be confused with Views which are simply different representations of the same document Layers are stored as separate raster files e The use of multiple layers may impose significant memory and performance overheads with large raster images What s a Document In Deskan Express each layer is stored as a separate raster file In order to keep track of this multiplicity of related image files the concept of a Document is used A Document is a collection of one or more raster files plus a housekeeping file called a Raster Control File RCF which logically ties them all together It is useful to visualize a document as a stack of transparent films Each film represents a single layer A view displays what would be seen if one looked down through the stack of films through a rectangular viewing window The image elements in each layer are seen superimposed in the view window All files comprising the document have a common path they must all reside in the same directory and all have the same base file name but unique extensions No more than one raster file in a document may have a standard raster file extens
72. an be toggled using their respective checkable menu options in the View menu The display of graphical overlays can also be toggled using the checkboxes in the View Settings dialog Tracking The Tracking facility provides an effective way of navigating around very large images A rectangle representing the extent of the current view can be displayed in any other window see Figure 2 6 p 2 9 Tracking is activated using the Tracking checkboxes in the View Settings dialog January 2009 Deskan v7 1 2 8 Fundamentals E piar Predorme 2 GERRA Te E Z Figure 2 6 Tracking facility Note the rectangle in the right window tracking the extent of the left window To make the tracking rectangle appear in any particular window Make the window current Summon the View Settings dialog and check the Current Tracking checkbox Click Accept Now this window will display the extent of whichever window is subsequently made current To make all windows other than the current one display the tracking rectangle Summon the View Settings dialog The Other Tracking checkbox will be greyed Click it twice to check it Click Accept Now all the other windows will display the extent of whichever window is subsequently made current This is equivalent to making each of the other windows current and ticking the Current Tracking checkboxes Saved Locations It is possible to name and store different lo
73. and load the document 6 MAIN MENU Note that a number of additional menu bar options have also appeared because a document is now open The Deskan v7 1 Application Window after opening mechan January 2005 Deskan Express Color v6 0 B 1 10 11 T2 13 14 15 16 Tutorials WINDOWS A window titled mechan Layer_one appears in the client area of the main Deskan v7 1 window The title bar indicates the name of the document mechan and the current active layer Layer_one A document can contain up to 20 raster files each of which is termed a LAYER Layers can be given arbitrary names which are independent from their raster file names A window can display all layers or a selection of layers However the current active layer in this case the only layer is always visible in all windows A window can be maximized to fill the entire client area so the viewing area is as large as possible Maximize the window using the maximize button at the top right hand side of the window MULTIPLE VIEWS We will now create an extra view of the image Select the menu options Window New Window then Window Tile Two windows now fill the client area of the Deskan v7 1 Application Window The titles of these two windows are mechan Layer_one 1 and mechan Layer_one 2 indicating the two views of the same document The Layer_one is the name of the current active layer and only la
74. anged Any dark areas appearing below or to the right of the white page extents indicates that the image exceeds the current page size and that more than one page is needed to print the document If the additional rectangle appears to the right of the central display then the right side of the document overlaps the page This is also reported in the dimension group of the controls under Pages Across If the additional rectangle is below the central display then the bottom of the document overlaps the page and this is also reported under Pages Down The left side of the dialog provides all the controls and feedback for the setup The bottom left group provides feedback as to the physical dimension of the data being printed In this group Source refers to the area being printed This will be either a fence or the entire document Output refers to the resulting size on the output page and Pages refers to the number and configuration of pages required to produce the output The units of measurement for the source and Output can be selected using the three radio buttons allowing the dimensions to be viewed as millimetres centimetres or inches To the right of this group is a button labelled Printer Selecting it offers a standard dialog for selecting which printer and page orientation to use The two buttons above this will automatically adjust the scaling to accomplish printing at the same size as scanned One To One or at a scale so that all the outpu
75. as being used for scanning in progress The scanning options are accessed in Deskan v7 1 through the Scan menu option or the Scan toolbar These options only become available if a Scan Document is loaded To initiate a scanning session create a new Deskan document by selecting the File New Scan menu option You will be presented with a file save as type dialog box in which you can name of the new document The Deskan Settings Dialog is then displayed to determine the type of scanning to be performed The settings in this dialog can be changed at any time up until the first strip is kept The reason for having special Scan Documents is to allow you to spread the task of scanning a large drawing over a number of sessions without losing previously scanned strips and to allow Deskan v7 1 to maintain control over the sequence of strips required to acquire the full image January 2009 Deskan v7 1 3 4 Scanning While a Scan Document is loaded certain functions which may interfere with the scanning process are made unavailable These functions include file saving and transformations Other functions such as raster editing are still available The Deskan Settings Dialog The Deskan Settings dialog box offers you the chance to adjust any initial settings The settings in this dialog can be adjusted up until the first strip is kept after which only the Brightness for monochrome scans only remains available Dekan Settings Dosumani Typ
76. aster document place a marker on a point that also exists in the merge document then focus into the merge document and place a marker on the same point Now place a marker in the merge document on another point that exists in the master document then focus into the master document and mark the same point This process assumes that no markers already existed in either document When this is true the first marker placed in the master document will have an id of 101 as will the first marker place in the merge document This is how Deskan v7 1 knows which markers match At least two points must be placed in order to use the Helmert transformation but more may be added to suit the conditions Once the markers are added focus into the master document and select the command File Merge Document A dialog titled Select Merge Document will be displayed listing every open document except the master document Select the merge document from the list and select the appropriate transformation Pressing OK will display a directory listing in which the new raster image s name format and location can be defined When a merge occurs only the raster image file is created with no raster control file The final dialog displayed provides the details of the merge which is about to begin If the details are as expected select Continue to perform the merge otherwise select Cancel January 2005 Deskan Express Colour v6 0 6 10 Advanced To
77. ated status codes Selection takes place by highlighting the layer in the list box then modifying its status When the dialog box is first opened the status icons report the current state of the layer Any alterations only take effect after the pressing the Accept button e The status icons are displayed in four columns gt The first column indicates the status of the current view e means the selected layer is or will become the active layer It is always listed first stands for the Target layer which is always second on the list e lar the layer will be opened e i the layer will be closed The second column uses an eye to indicate the visibility of layers in the current view e a Open indicates the layer will be visible in the current view po Closed indicates the layer will be hidden in the current view The third column uses a pair of eyes to indicate the visibility of layers in the other views y the layer will be made visible in all other views r _ 7 the layer will be hidden in all other views e no icon indicates that all the other layers will be untouched in reference to this layer The fourth column indicator e the current layer has been modified e Layer Title The Layer Title string following is the name of the layer it can be edited using the Edit Title button Layer control buttons In the View Settings dialog is a group of buttons labelled Selected Layer
78. atically be kept and you will be prompted with the Omron Scanner dialog to scan the next strip 15 Move the Scanning Guide to the second strip without touching the scanner then press the OK button 16 The second strip is scanned and kept then the dialog re appears for the next strip BOG January 2005 Deskan Express Color v6 0 B 10 Tutorials 17 Assuming that we have scanned all we want press the cancel key 18 The strips are now joined and saved as shown in the last tutorial For this tutorial the derivation of the palette separate to the scanning sequence does not show any obvious advantages This is because only a small low resolution scan was performed to minimize wasted time The important point here is the sequence of steps for scanning and deriving palettes If speaker were attached to the computer and the sound option was on you would have also heard the audible prompts These allow you to scan several strips without having to return to the computer to start each strip January 2005 Deskan Express Color v6 0 B 11 APPENDIX C GLOSSARY Glossary Appendix C GLOSSARY Background Within Deskan v7 1 every layer has a colour colour which is considered to be transparent can be seen through Base colour The colour that will appear in the image when all the layers in the document are transparent and there is no data bit depth The number of bits needed to store one pixel of an image It is als
79. aved location called chairs Make sure that Tools Do Select Select by Point Area and Tools Do Select Move Selections are still ticked Locate the cursor on one of the green D shaped chair cells in the drawing at the point 600 773 and left click once on it It becomes highlighted Next find another separate green chair not joined to other line work and click on it The first chair turns white showing it has been moved to the Target layer while the chair just clicked is highlighted This process can be repeated continuously clicking on different green objects Press the right button on the background if there is a selection highlighted A faster way to select many small elements is to use a Dragged Area To demonstrate selection by Dragged Area make sure Tools Do Select Select by Point Area is ticked Fit the image in view by pressing f Move the cursor to just inside the lower left corner of the drawing border near the point 80 119 Holding the left button down drag an area up to a point just inside the upper right corner around 2680 2007 A rubber band rectangle stretches from the first corner to the current cursor position Release the left button The rectangle disappears and the remaining yellow pixels that were enclosed become highlighted after a period If you accidentally highlight the proforma and border click the right mouse button immediately to reset and try again Once you have select
80. batch file Logging Batch Commands All batch commands executed during batch processing will be logged in the log file whether or not the File Set Up Log operations checkbox has been checked Batch Processing commands Format The general format of a Batch Processing command is command lt argument gt layer_list Each command must start on a new line and may be entered in either upper or lower case The commands and their arguments must be on the same line and separated by at least one space In the command descriptions that follow the arguments if applicable are indicated by code words representing certain types of data enclosed in lt gt as explained below If the argument is optional it is shown in square brackets A separates lists of parameter alternatives Some commands utilize a layer_list as a parameter This is defined formally below January 2005 Deskan Express Colour v6 0 6 12 Advanced Topics Comments Any line beginning with an will be treated as a comment and ignored Any line beginning with a gt will also be treated as a comment but will be echoed to the log file along with all other batch processing commands Layer List Some batch commands allow the user to specify a list of layers to operate on The definition of layer_list is either not provided use active layer an asterisk means use all layers name name a list o
81. be easily found The following descriptions provide a quick overview of each chapter and appendix Chapter 1 This chapter covers all aspects of getting your Deskan v7 1 system up and running as well as describing the systems requirements and general capabilities This chapter is best read when you initially receive the system and before you perform the installation Chapter 2 This chapter provides background information about the concepts behind the application Having read this chapter it is much easier to gain an understanding as to why the application behaves the way it does Chapter 3 Chapter 3 describes all aspects of the scanning process within Deskan v7 1 It covers all the available options and processes as well as reiterating on relevant background information Having read this chapter undertaking the scanning tutorials will provide a confirmation on the techniques discussed Chapter 4 Having obtained an image this chapter deals with manipulating that image The topics covered involve the use of editing tools for direct adjustments simple transformations to adjust the whole image and colour manipulations to modify the appearance It also covers methods to transfer information between layers enabling the image to be broken down into parts Chapter 5 As an alternative this chapter provides a description of all the menu options Not only does it describe the command but it also provides descriptions on intended uses and the
82. be given for transformation selection which will apply to every case the following three example situations provide a general guide January 2005 Deskan Express Colour v6 0 6 6 Advanced Topics If the image is in the correct aspect ratio but it needs some common rescaling of both axes rotation and or origin translation then select HELMERT If the X and Y axes of the image are not orthogonal and or the X and Y axes need to be re scaled differentially then select AFFINE If the amount of distortion in the image varies from one end to the other then select PROJECTIVE Residuals A report on the accuracy of a transformation can be generated by selecting Transform Residuals This same report is also placed in the deskpro log file when File Transform to is used to generate a new document The mathematical models of each transformation type are designed to minimize distortion over the entire image but may not be able to remove distortion entirely Any distortions remaining after transformation are called residuals and their magnitude will depend on the amount of controlling data supplied the type of transformation selected and the overall regularity of the original image If only the minimum number of control points for the chosen transformation are applied there should be no residuals However if the image has non uniform distortions it may be desirable to place more control points at known locations Then the trans
83. be greyed out when multiple layers are selected When a single layer is selected the format selector shows the current format for that layer To change the format simply select another from the list Only those formats capable of supporting the layer type are offered for the currently selected layer Saving changes back to the current document Selecting File Save saves layers back to their own files in the current document but the document remains open A picklist is displayed showing all the layers with any modified layers being pre selected This provides an opportunity to select which layers are to be saved as well as adjusting the format that they will be saved in If a document is bound see Binding p 4 20 then all layers must be saved together or else all changes discarded Saving layers as a new document To save some or all of the layers to a new Document 1 Select File Save As 2 Enter the name of the new document s Raster Control File in the Save Raster Document As dialog which appears 3 Click the Save button 4 Nominate which layers to save in the Save Layers As dialog which appears next At this time the format for each layer can be modified Multiple layers can be selected by clicking on the layer names while holding down the control key 5 Click the Save button The newly created document will then become the current document Closing a document Selecting File Close closes a
84. being seen by the program as data it January 2005 Deskan Express Colour v6 0 A 3 Roadmap ROTATING FLIPPING SCALING AND TRANSFORMING THE IMAGE ROTATING See Rotation p 4 22 How to rotate the image by a specified angle SKEWING See Skewing p 4 23 How to skew rotate the image to make a certain line vertical or horizontal FLIPPING See Flipping p 4 24 How to flip the image about the vertical or horizontal axis SCALING See Scaling p 4 21 How to scale the image CONTROLLED TRANSFORMATIONS See Controlled How to perform more complex Transformations p 6 1 transformations such as Helmert Affine or Projective resulting in a new raster document DOCUMENT MERGING See Document Merging p How to combine to documents or raster 6 10 images into one new raster image OVERSIZE DOCUMENT SCANNING See Document Merging p How to scan documents larger that the 6 10 Scanning Base USING FENCES How to use fences bounded regions See Using Fences p 4 which can be hea independently of 12 the rest of the image January 2005 Deskan Express Colour v6 0 A 4 Roadmap RASTER EDITING ERASING See Erase p 4 5 How to Erase pixels with the cursor eraser CLEARING FENCE See Clear Fence p4 15 How to delete regions of pixels inside or outside of a fence DELETING SELECTED PIXELS See Deleting Selections How to delete pixels selected by p 4 17
85. by selecting it from the most recently used list in the Window pull down menu Opening Windows When a file is loaded at least one view of the data is created A new window view can be opened at any time by selecting the Window New Window menu option The new view appears superimposed on the original and becomes the current view Arranging Windows Windows can be moved around and re sized by using the cursor Windows can be gripped by the title bar and dragged with the cursor by holding down the left mouse button Windows can be re sized by bringing the cursor close to a corner point or edge and when the cursor changes into a two way arrow that corner or edge can be dragged by holding down the left mouse button stretching or reducing the window Multiple windows can be neatly arranged automatically by selecting either the Window Tile Vertical Window Tile Horizontal or Window Cascade menu options Scrolling panning Views can be scrolled panned or zoomed individually Deskan v7 1 provides a variety of ways of doing this To scroll a view horizontally or vertically the scrollbars in each view window can be used January 2009 Deskan v7 1 2 4 Fundamentals The arrow keys can also be used to scroll an image Holding down the Shift key while using the arrow keys increases the scrolling steps The Home End Page Up and Page Down keys also provide an efficient mechanism to reach the top bottom l
86. cally formulated for anodised aluminium surfaces These products contain residual waxes etc and can substantially improve the appearance of worn or weathered surfaces e The use of strong acid or alkaline cleaning agents will damage the anodised coating on aluminium components Guide Handle The guide handle is made from powder coated aluminium The powder coated scanner handle should be regularly washed at least every 6 months to remove the natural accumulation of dirt and grime In areas where airborne salt deposits and atmospheric pollution is high maintenance should be more frequent Wash using mild detergent and soft sponge or cloth Rinse thoroughly with clean water to remove residual detergent Stubborn stains can be removed with either mineral turpentine or methylated spirits January 2009 Deskan v7 1 3 20 Scanning e The use of harsh solvents eg lacquer thinners or abrasive pads will damage the powder coating s appearance and performance Scanning Guide glass The glass base forms part of the Scanning Guide The glass should be cleaned with mild soap or detergent and water Dry with a soft lint free cloth e The glass used in the base is hardened glass but can be easily damaged or smashed if due care is not excercised The operator of the Deskan System should note that there are no user servicable parts in either the scanner head or the associated hardware Lubrication is not advised nor required for an
87. canner margins automatically 3 17 Figure 3 9 Scanner calibration 3 17 Figure 3 10 Scanner Calibration Card 3 18 Figure 3 11 Monument width calibration report 3 19 Figure 6 1 The Helmert Transform The dashed lines extending from the control points indicate the relative positions of the World coordinates of each control point and hence the amount by which each point will be shifted under the transformation 6 4 Figure 6 2 The Affine Transform The dashed lines extending from the control points indicate the relative positions of the World coordinates of each control point 6 5 Figure 6 3 The Projective Transform The dashed lines extending from the control points indicate the relative positions of the World coordinates of each control point 6 6 Figure 6 4 The Transformation Output Settings dialog 6 8 Figure 6 5 Document merge confirmation 6 11 January 2009 Deskan v7 1 Il Contents Figure 7 1 Scanner connection 7 2 Figure 7 2 Deskan v7 1 scanner calibration 7 2 Figure 7 3 Twain scanner calibration 7 3 Figure 7 4 Sheet fed scanning 7 3 Figure 7 5 Removing the scanner head 7 4 Figure 7 6 Motorized scanning 7 4 Figure 7 7 Attaching the scanner head 7 5 January 2009 Deskan v7 1 IV CHAPTER 1 GETTING STARTED Getting started Chapter 1 GETTING STARTED About the Manual This manual contains 7 chapters and 3 appendices designed to cover every aspect of Deskan v7 1 in such a way that the required information can
88. cations zoom levels and centre pixel coordinates in each open document and reconstruct these locations later To save the location in the current active view Select the menu option View Save location The Enter name to identify Location dialog appears Enter a character string of up to 20 characters with no spaces or commas to identify the location then press Enter or click OK to save Load Locations Previously saved locations can be recalled by name reconstructing the zoom level and centre pixel coordinate of the scene To load a previously saved location Select the menu option View Load location January 2009 Deskan v7 1 2 9 Fundamentals In the Select location to match dialog select the required location from the picklist and click OK to return to it or Delete to delete it from the list Previous locations Each time a view is zoomed scrolled or re sized the location in the image just prior to the zoom and scroll action is stored and can be returned to using the menu option View Previous location Each open document in Deskan v7 1 has only one storage buffer for Zoom Scroll and re size events This means that locations stored for one view will be lost if another view of the same document is activated and Zoom Scroll or re size actions are performed January 2009 Deskan v7 1 2 10 Fundamentals Files Layers and Documents Supported File formats Deskan v7 1 can in
89. checkboxes control what is displayed in the window which was current just prior to the dialog box being opened For example if the Control checkbox in this group is checked then the current view will display control points Any other views of the document apart from the current view are controlled by the checkboxes labelled Other These checkboxes are tri state and appear initially greyed and checked in Windows XP When greyed the checkboxes have no effect on the Other views they simply let the views remain in their current state The two checkboxes labelled Layer determine whether the currently highlighted layer in the layer selection box is displayed or hidden The Active and Target layers cannot be hidden in any view so if the highlighted layer is one of these two you cannot remove the check The Layer checkbox in the Current group controls the visibility of the highlighted layer in the current view and similarly the checkbox in the Other group governs the layer s appearance in all the other views As each layer in the list is highlighted the contents of these checkboxes can change as each layer can have a different combination of these controls giving the user a certain flexibility in displaying different layers January 2009 Deskan v7 1 2 22 Fundamentals Layer Selector Box The layer selection box in the View Settings dialog is a list of the layer names and their associ
90. closed by default when a document is opened However they are available to be opened and displayed on request by selecting either the Layer Open Open Layers or the View Settings dialogs They can then be displayed or hidden in any combination To hide any of the other layers apart from the Active and Target simply open the View Settings dialog select the layer in the list and uncheck the Views Current Layer checkbox then click Accept Any raster elements in the hidden layer will immediately disappear from view Swapping Active Target The Layer Swap menu option simply swaps the current Active and Target layers An icon for this command has been provided on both the Selections and Layer toolbars January 2009 Deskan v7 1 2 24 Fundamentals Removing Layers A selection of layers other than the Active layer can be removed from a document using the Layer Remove menu option S This also deletes a layer s raster file from the disk If you wish to retain any layer as a separate raster file you should first export it see Exporting a copy of a layer p 2 21 The current Active layer cannot be removed First swap it with another layer before trying to remove it The current Target layer can be removed The document will then have no Target Document Information A complete profile of a document can be seen in the Document information dialog see Figure 2 10 p
91. could be promoted to a layer dedicated to text so that they can be processed differently from the other line work Selected raster elements can either be deleted completely from the active layer moved from the active layer to the target layer or a copy of the element placed in the target layer leaving the active layer intact Deleting Selections To delete a selected raster element 1 Select the checkable menu option Tools Do Select Delete Selections 2 Select the active layer as described in the section Layer control buttons p 2 23 3 Select the appropriate extent restriction as described in the section Extent Restriction p4 18 January 2009 Deskan v7 1 4 17 Image Editing 4 Select the raster element as described in the section Selecting Elements p4 19 The selected pixels appear in the highlight colour 5 Click the left button again to confirm the selection The pixels immediately disappear or click the right button to cancel the selection M The confirmation mouse action can be used to initiate the next selection mi Zooming and scrolling can be used while a selection exists Moving Selections To move selected pixels to the target layer 1 Select the checkable menu option Tools Do Select Move Selections 2 Select the active and target layers as described in the section Layer control buttons p 2 23 3 Select the appropriate extent restriction as described in the section Ext
92. cting the X and Y axes differently Differential scaling is commonly used to stretch an image by a small amount in one direction to compensate for some distortion Since scaling can alter the extents of a document the layers are bound beforehand The resolution of the document is not changed by scaling see Resolution dpi p 6 9 however controlled transformations can change both extents and resolution To scale the X and Y axes by a common factor 1 Select the menu option File Scale by Common Factor 2 Input the scaling factor into the input field in the dialog box Click OK 3 If there have been unsaved modifications to the document the Save layers before binding checkbox appears in the warning dialog If you do not wish to select layers for saving prior to the operation uncheck the checkbox If new layers exist within the document the checkbox is not displayed and a message identifying that new layers exist and will be saved is displayed Press Continue Cancel will abort the whole scaling process January 2009 Deskan v7 1 4 21 Image Editing 4 Select any layers for saving from the Save Layers before Binding dialog if desired Click Continue to start the transformation Clicking Cancel will abort the whole scaling process To differentially scale the X and Y axes 1 Select the menu option File Scale by X and Y Factors 2 Input the X and Y scaling factors
93. ctive Layer At all times exactly one layer in the image is designated as the active layer although the particular layer in this role can be changed see Layer control buttons p2 23 The active layer is the layer in which all raster editing operations take place The Raster Control File records the identity of the current active layer and so it can remember which layer was the active layer at the time the document was saved Target Layer One layer in the document can be nominated as the Target layer see Layer control buttons p2 23 It is the destination layer for Cut Copy to Target and element selection commands A document need not always have a designated target layer This is important to realize since some operations such as the Tools Do Select Move Copy Selections commands are not available unless a Target layer is defined January 2009 Deskan v7 1 2 13 Fundamentals These options will be greyed out unavailable until a Target layer is selected When a document is saved the identity of the current target layer is not recorded hence a newly opened document has no target layer M Having the layers toolbar displayed makes it very easy to change both the active and target layers M Having the tools toolbar displayed means that the active layer s defined background colour and the document s background appearance colour can be easily referenced January 2009 Deskan v7 1 2 14 Fundam
94. cument palette with one derived from the currently active 24 bit colour layer January 2009 Deskan v7 1 5 11 Menu Options Colour Load Document Palette Replace the document palette with one from another file It is possible to extract document palettes from Raster control Files or Auxiliary Data Files Colour Save Document Palette Save the document palette to a file It is only possible to save document palettes into Auxiliary Data Files Colour Save as default palette Save the document palette as the default palette This makes the current documents palette the default palette for any new document being created Colour Edit Default 4 bit palette Modify the palette that is used when creating 4 bit layers Colour Save as default 4 bit Save the current 4 bit palette as the default for when creating 4 bit layers Colour Merge Palette Entry into Drawing Colour Modify selected palette entries to match the current drawing palette entry a Colour Merge Palette Entry into Background Colour Modify selected palette entries to match the currently defined background palette entry Colour Clip Noise Lower Consolidate selected low entries to black Colour Clip Noise Upper Consolidate selected high entries to white Transform Transform Add Control Add a control point Transform Add Marker Add a marker point January 2009 Deskan v7 1 5 12 Menu Options x Transform Delete
95. d in the left hand selector of the ReadOut and Pixels appears on the right This utility will help us to refer to specific features in the image 4 Ensure that the Undo facility is enabled by making sure the menu option Edit Undo On Off is ticked 5 Move the cursor into the image area and hold down the right mouse button When the context menu appears and still holding down the right button highlight the Settings option then release the button The View Settings dialog appears Note that only one layer named plans appears in the layer list 6 Change the name of this layer to Proforma by clicking the Edit Title button and typing Proforma in the Edit Layer Title dialog Click OK 7 Click Accept to close the View Settings dialog Note the title of the view now shown in the Deskan v7 1 Application Window title bar changed from plans plans to plans Proforma 8 We will now create a new layer Select the menu option Layer New Blank The Add New Layer dialog pops up requesting a layer title for the new layer Delete the default title New_Layer_nn where nn is a number and type Drawing without the quotes Because we will be selecting into this layer it must be left with a bit depth of 1 to match the Proforma layer We also need it to be the Target layer to receive the selections so leave the target attribute set then click OK
96. d to cut or copy the buffered data appears centred at the cursor When positioned as desired click the left button to paste the data within that temporary fence line To Paste transparent from Buffer or File 1 Select the menu option Edit Paste Transparent from Buffer or File 2 If the fence description is available it is used otherwise a fence representing the extent of the data region to be pasted appears in the image centred on the cursor It can be moved around with the cursor released from the cursor by clicking the right mouse button and re attached by clicking the left button Each left mouse click stamps a copy of the stored data onto the current image 3 Right click twice to dismiss the temporary fence Paste All The Edit Paste All from operations are the same as Paste Transparent except that both background and data pixels are pasted wiping out any data already in the area where it is pasted Data is pasted from the Buffer or from a file depending on the sub menu option chosen Buffer or File Differences between using Menu commands and icons when pasting There is not a one to one correspondence between menu options and icons when pasting If using the Edit toolbar icons to perform a Paste first select the data source either from the Deskan v7 1 buffer To From Buffer or from a raster File To From File The optional Transparent modifier may be used to paste only the data t
97. ddition the linewidth colour and fill attributes can be altered dynamically Once the shape is defined each left click will place a copy of the shape into the active layer To select Stamp mode Select the checkable menu option Tools Stamp so that the check mark appears next time the menu is displayed To exit stamp mode Select the Tools Stamp menu option again to remove the check mark Tool Modifiers The behaviour of the drawing tools can be modified by using the tool modifiers found in the Tools and Colour menus The Tools menu provides options Drag Stamp Fill Size and Drawing Mode The Colour menu provides Drawing Colour selections These modifiers can be changed dynamically while the dynamic shapes are still attached to the cursor Colour There are two important colours that must be known when dealing with the drawing tools These are the layer s drawing colour and defined background colour The other control that influences these is the Drawing Mode When using the freehand drawing tool the drawing colour is always used and when using the eraser the defined background colour is always used For all the other tools the colour used is controlled by the drawing mode In foreground mode the drawing colour is used and in background mode the defined background colour is used To select the drawing Colour There are two ways that the drawing colour can be changed The menu option Colour Drawing Colour Select offers a d
98. ded that the scanner should only be utilized by one application at a time The next three sections on Assembling Connecting and Calibrating the scanner with Deskan are for use with both TWAIN applications and Deskan v7 1 The remainder of this chapter details the use of the scanner as a TWAIN Data Source For details on using the HS600 Twain installation software refer to the file InstallationGuide pdf which was installed in the directory selected during installation Assembling the Scanner The scanner has a removable scanner head so that it may be used for scanning bound materials such as books However in its sheet fed mode the scanner head must be on the automatic document feeder ADF For sheet fed scanning it is essential that the scanner head be properly and completely attached to the ADF To attach the scanner head to the ADF for sheet fed mode place the scanner head straight down onto it Make sure that the rectangular connector box on the ADF lines up with the hole in the bottom of the scanner head The scanner must be on the ADF in order to calibrate the scanner for use with Deskan v7 1 Connecting the Scanner In order to connect the scanner the following steps must be performed 1 Shut down Windows and turn off the computer January 2005 Deskan Express Colour v6 0 7 1 Setting up the DESKAN 6 Scanner 2 If you have a printer attached to the parallel port unplug it now You will reattach your printer to t
99. dix B contains a set of tutorials that provide a valuable re enforcement to the techniques and capabilities of Deskan v7 1 They can also be used to gain hands on experience Each tutorial is aimed at a particular activity which is identified by the tutorial title and in more detail in the tutorial statement of objective Appendix C Appendix C contains a glossary of the terms used within the manual This can be a valuable aid as some terms can have multiple meanings of which only one is relevant January 2009 Deskan v7 1 1 2 Typographical Conventions The following text formatting conventions are used in this manual Text Formatting Type of text item example Placeholders used as symbolic Zz names for variable items Menu options Any hot keys are E m underscored lt documentFileName gt User supplied parameter option Alt F Ctrl C Key stroke chords involving the Ghift F1 extended keys O F FY Single character keystrokes Symbol Meaning Performance tips for more efficient C4 use of Deskan v7 1 January 2009 Deskan v7 1 Getting started Getting started About Deskan v7 1 What is Deskan v7 1 Deskan v7 1 is a powerful large format scanning and raster editing toolkit It provides the tools needed to scan drawings up to AO size US E size giving an image quality and accuracy comparable to conventional large format scanners What can Deskan v7 1 do Deskan v7 1 has three mai
100. document fits so that the horizontal line of Control Crosses adjacent to the 300mm 11 75 inches mark are still visible then select 300mm If these are covered but the Control Crosses across from the 600mm mark are visible then select 600mm If the Control Crosses adjacent to the 870mm mark are also covered then the document must be rotated or folded in order to be scanned B If the document is too large to fit on the Scanning Base within the Control Crosses and needs to be folded and scanned as separate documents then they can be joined January 2009 Deskan v7 1 3 5 Scanning after scanning using the File Merge command see Document Merging p 6 10 6 16 The Brightness control is only available for monochrome scans It ranges from 1 to 100 and is used to control the level of data being acquired the higher the value the more data Once accepted with the OK button the dialog is closed and a scan document is open but has no data The Scan Settings dialog can be reopened to make adjustments and view the current status of the document It is accessed via Scan Settings 8 bit Colour Scanning To produce an 8 bit colour image the scanner first scans the strip in full 24 bit colour then automatically reduces the strip to 8 bits Colour reduction processing is performed in two places When the first strip is about to be kept the colour reduction may derive new entries for the document palette suitable for the
101. ds The Sounds button opens a dialog from which different varieties of sound prompts can be selected These are only used with automatic scanning see Autoscan p 3 15 The four radio buttons across the top of the dialog allow e No Sound no sound prompts will be issued e PC Speaker Four distinct sounds will be generated through the PC s speaker e Windows Defaults The sounds generated will be determined by the settings in the windows system The sounds can be configured by selecting Start Settings Control Panel from the start menu then double clicking on the sounds icon The relationship is as follows gt gt gt gt Default Windows Default Sound Control Windows Asterisk Start Windows Question and Error Windows Exclamation e Custom File This allows the selection of specific sound files to match the current event To establish a file simply press the adjacent Browse button The adjacent Test buttons allows the sound choices to be reviewed Figure 2 14 Sound settings dialog January 2009 Deskan v7 1 2 29 Fundamentals Default values There are two input fields in this group The Default Resolution dpi field allows the user to control the default value of image resolution used for new images and for image formats which do not contain resolution information in their headers for example RLC The Context Menu Delay Millisec allows the
102. e Settings context menu option or by using the Quick Keys The context menu is obtained by holding down the right mouse button The title bar of this dialog box displays the name of the currently focussed view in document name active layer name view number format The view _number field only appears if multiple views of the same document are open B The controls in this dialog set up the desired state but it is not until the Accept button is clicked and the dialog disappears that the changes take effect January 2009 Deskan v7 1 2 21 Fundamentals plans i Drawing zier Selected Laver Curieril Obra Ferge Feme _ Comtral fe Corral Heke Tane l Tracking F Trackng 3 i Lapar i Layer A Diwair E Piglema Figure 2 9 The View Settings dialog The Views checkboxes The View Settings dialog box contains two panels of checkboxes bound up in a Views group with one panel labelled Current and the other panel labelled as Other These checkboxes control which graphical overlays are to be displayed in the various view windows If the checkbox is checked that particular overlay or layer is visible Deskan v7 1 maintains multiple views of the document in separate windows on the screen The window into which the input focus is currently directed is termed the current view It is recognized by its highlighted title bar The Current group of
103. e Pixels Get the colour information for a pixel or group of pixels in the current active layer Colour Drawing Colour Select Select a new drawing colour from the layers palette January 2009 Deskan v7 1 5 10 Menu Options Colour Drawing Colour Sample Select a new drawing colour from the displayed active layer a Colour Background Colour Select Select a new background colour from the layers palette This colour will be treated as the transparent colour for the active layer and subsequently used by the eraser and background drawing mode Lae Background Colour Sample Select a new background colour from the displayed active layer This colour will be treated as the transparent colour for the active layer and subsequently used by the eraser and background drawing mode Colour Transparency Toggle the transparency on or off Colour Base Colour Select Select from the palette the colour to be displayed where all pixels are transparent Colour Base Colour Sample Select from the displayed active layer the colour to be displayed where all pixels are transparent Colour Edit Layer Palette Modify the palette that controls the active layers display Colour Edit Document Palette Modify the entries in the palette that control the document Colour Sort Document Palette Arrange document palette entries into ascending order of average intensity Colour Derive Palette Replace the do
104. e bottom lines on both sides are in appropriate positions select the OK button to save the new margins Autoscan Margins In rare circumstances it may be necessary to readjust the margins for every possible mode and resolution as Deskan v7 1 version 5 0 supports 20 combinations of mode and resolution which require margins the process of setting the margins can be both tedious and time consuming To alleviate this problem the command Scan Utilities Autoscan Margins has been provided This command will adjust the 20 margin pairs automatically When the command is selected the following dialog appears giving instructions on how to set up the scanner January 2009 Deskan v7 1 3 16 Scanning Figure 3 8 Adjusting scanner margins automatically When the Yes button is pressed a dialog is displayed which indicates the progress The scanner will move up to an area between the Control Crosses and start performing a series of short scans Each scan will be at a different mode and resolution and from each appropriate margins will be determined When all have been done a confirmation dialog is displayed Scanner Calibration When the colours do not appear correct or there is a variation in the lightness between the left and right side of a strip then the scanner head requires re calibration Select Scan Calibrate and the following dialog will be shown DESKAN 6 ae Eg Place scanner in calibration cradle and pres
105. e last strip scanned as described above and exit Deskan Express If an error occurs refer to Keep Errors on page 3 11 for an explanation on the possible reasons Positioning the Scanning Guide for the next strip Once a strip has been Kept the scanning guide should be lifted by the handle so that the glass is clear of the document and then slid to the right along the rail at the top of the guide When the guide is directly over the next strip lower the handle so that the alignment key drops into the cut out in the scanning base Ensure that the control crosses under the top end of the scanning guide are approximately centred between the ticks on the guide as shown in the diagram below before lowering the guide handle If not you will need to lift the handle to adjust the positioning at the top end Figure 3 6 Control Crosses centred between Ticks on Guide e Note If the guide is not correctly positioned the quality of the joined image may be affected Join Strips Once all the required strips have been scanned and kept the join operation is used to retrieve each strip image in sequence and join it to the previous strip in memory Joining is initiated by selecting the Scan Join menu option The tick marks on the guide are used to sense whether there has been any stretching or squeezing of the strip image vertically It spreads or compresses the image between each set of marks to make the marks appear exac
106. e menu option Tools Rectangle The cursor changes to a cross over a solid square with the square representing the size of the defined line width 2 Click the left mouse button on the point to be one corner of the rectangle Make sure left button is released A dynamic rectangle stretches around the area defined by the starting corner and the current cursor position The view can be scrolled or zoomed while placing the rectangle or a different view of the same document can be entered 3 Click left button again to fix opposite corner Note that the original corner is maintained by the dynamic rectangle allowing additional rectangles to be placed 4 Click right button to free cursor from dynamic rectangle January 2009 Deskan v7 1 4 6 Image Editing Inclined Rectangle Draws an inclined rectangle that can have its base on an angle You select the first corner then a point to indicate the angle of one side then a third point to define the rectangle s diagonally opposite corner To place an inclined rectangle in the image 1 Select the checkable menu option Tools Inclined Rectangle The cursor changes to a cross over a solid square with the square representing the size of the defined line width 2 Click the left mouse button on the point to be one corner of the rectangle Make sure left button is released A dynamic line which will be one side of the rectangle stretches from that point to the current cursor position The v
107. e p Stan Lengih p Caler Rieeluaticn Weda Black white C Eflnm mi Fine T Edim Recul S00 ka F a0 Calne Bl 25E Bniohiriess e e Ge a Hi 5a O Ships Scanned Tanira a Bee Fiaure 3 4 Initial Settinas Dialoa This dialog enables the selection of the type and resolution of the document to be produced The mode control can be set for Black White Grey scale 8 bit colour or 24 bit colour The resolution can be set to various values ranging from 75 dpi up to 600 dpi The Colour Reduction group of controls is only available if the document is being scanned using the 8 bit colour mode With this mode the scan is captured as 24 bit colour and is then reduced to 8 bit during the keep process The main benefit of selecting this option is the 66 reduction in data volume For a 200 dpi AO document the size is reduced from approximately 190 Mb down to 64Mb and its effect on performance is obvious Please refer to the following section for more details about 8 bit colour scanning The Apply Colour Correction checkbox when selected will apply small corrections to rectify minor variations introduced by the scanning process In most cases this is not necessary and when used it will slow down the keep process The Scan Length provides three options which determine the length of scanning performed When scanning a document it is always placed in the bottom left corner of the Scanning Base If the
108. e save dialog appears select the save button You have now produced a new document using the scanner For more details or alternatives refer to the chapter on scanning S on page 3 1 and the next tutorial on colour scanning NS OI January 2005 Deskan Express Color v6 0 B 9 Tutorials Tutorial 5 Colour Scanning Objectives To understand the scanning process and in particular the fastest method for scanning large format or high resolution images This tutorial covers the creation of a scan document scanning of an image and joining the resulting strips This tutorial will also show how to derive a palette from a low resolution image in order to save processing time when keeping the first strip Procedure 1 Obtain a colour brochure that is less than 300 mm 11 75 inches high and of a reasonable width 2 Place it on the scanning base in the bottom left corner ensuring that the Control Crosses just above and just below are visible It is assumed that the document overlaps into the second strip of the scanning base 3 Fasten it to the scanning base using tape at the corners The tape needs to be thin to minimize any parallax distortion 4 Position the Scanning Guide over the first strip by sliding the circular lug into its recess then swing the other end from side to side until it slips into its recess Position the scanner so that it is at the bottom of the Scanning Guide Start Deskan v7 1 and select File New
109. e which can be customized see commands Colour Edit Default 4 bit palette and Colour Save as Default 4 bit 8 bit Grey scale An 8 bit grey scale layer contains a palette with 256 entries see Layer and Document Palettes p 2 16 For every entry the red green and blue intensities are all equal and the entries are ordered so that the RGB 0 0 0 see Layer and Document Palettes p 2 16 is at entry 1 RGB 1 1 1 at entry 2 and so on up to entry RGB 255 255 255 in entry 256 Because of these requirements it is not possible to have both a grey scale layer and a 4 bit or 8 bit colour layer in the same document It should also be noted that the layer palette and document palette will be exactly the same 24 bit Colour A 24 bit layer does not contain a palette as each pixel is fully defined Within Deskan v7 1 selecting a drawing colour is initially done from the document palette which provides the 256 most often used colours and from there custom colours may be selected if necessary January 2009 Deskan v7 1 2 15 Fundamentals When you have a document containing multiple overlaid layers that may be colour then some rules need to be established so that it does not become too confusing This is accomplished by addressing three issues being palettes transparency and monochrome images Layer and Document Palettes A palette is a table of colour descriptions that is used by the computer to define how a colour is to appear
110. ed all the features in the drawing area click the left mouse button on any black area of the image to accept the selection and move the pixels to the Target layer The pixels that were highlighted become white the display colour of the Target layer indicating they have been moved to the Drawing layer The actual proforma remains green If you need to redo the procedure select the Edit Undo menu option and repeat You now have a finished 2 layered document with the proforma in one layer and the drawing in another Finally we will save the new document Select the menu option File Save The Save Layers dialog appears prompting the user to select the layers to save Click firstly on the All button then on Save The document is saved to disk as three separate files plans rcf plans tif and plans L02 January 2005 Deskan Express Color v6 0 B 8 Tutorials Tutorial 4 Monochrome Scanning Objectives To understand the scanning process in its simplest form This tutorial provides no explanation or alternatives It is a simple step by step procedure to scan the first two strips of a landscape A3 document such as a brochure in monochrome Procedure 1 Obtain a brochure that is less than 300 mm 11 75 inches high and of a reasonable width 2 Place it on the scanning base in the bottom left corner ensuring that the Control Crosses just above and just below are visible It is assumed that the document ov
111. ed layers are inverted so that background becomes foreground and vice versa a File Transform to Initiates the creation of a new document containing the Raster Transformation of the selected layers File Run Batch Deskan Express provides a batch oriented command language which can be used for unattended transformations of multiple images This command enables the selection and execution of a batch script file File Page Setup Display a dialog that controls the image size and position on a printed page File Print Initiates the printing process as currently defined File Exit Exit from Deskan Express back to Windows Edit _ Edit Undo On Off Toggles the enabling of the Undo facility _ Edit Undo Ctrl z Reverses the effects of the last action January 2009 Deskan v7 1 5 3 Menu Options Edit Redo Ctrl A Re does the actions which were Undone since the last action Edit Reload The Reload operation re loads the current document from its source raster files stored on disk and any changes made since it was last saved are lost The Reload function only becomes available after a binding operation E Edit Define Box Fence Allows you to place a rectangular fence Edit Define Polygon Fence Allows you to place an irregular multi sided fence L Edit Remove Fence Removes the current fence from the active document that is the document which has one of its views in focus
112. ed raster file so that technical support can repeat the error Join Errors If there are problems with the quality of the stitching in the Join process please follow these steps 1 Start a new scan document in an empty directory 2 Scan and Keep 2 or 3 strips do not Join 3 Exit Deskan Express January 2009 Deskan v7 1 3 22 Scanning 4 Attach all files in the directory to an email and sent to technical support Preferably compress the files into a ZIP file Colour Balancing If there is vertical striping or incorrect colours in the image the Scanner head requires recalibration refer to Scanner Calibration p 3 17 January 2009 Deskan v7 1 3 23 CHAPTER 4 IMAGE EDITING Image Editing Chapter 4 IMAGE EDITING Having obtained an image this chapter deals with manipulating that image The topics covered involve the use of editing tools for direct adjustments simple transformations to adjust the whole image and colour manipulations to modify the appearance It also covers methods to transfer information between layers enabling the image to be broken down into parts Introduction to Raster Editing It is often desirable to be able to make alterations to the raster image before printing in order to improve the final result Some of these corrections can be quite minor for example erasing unwanted pixels causing spreading or merging of lines due to smudges in the original scanned drawing At other times
113. eeeeeees 4 21 setting default eee 2 29 Settin A EAE PE E E atte 2 20 WHat IS iter a ai tees 2 6 NAET 0R gt CA EE E 1 6 resuming Scanning 3 14 Shift Key r eiat io s itia 2 5 ROB eree AACR 2 15 Simple Transformations 4 21 Roadmaps A 1 Size Tool and Linewidth 4 11 Rotationen ones 4 23 SKE WANG oc ccenisencecsseecscasdestieendess 4 24 S Sound settings cesceseseeeseees 2 28 Square pixels displayed 6 8 Save Stamp tool ceeeeseesseeseereeees 4 10 ACH VE LAY EL ieseicheivn ee age ceseestets 2 20 Starting Deskan V7 1 0 eee 1 6 as new document eee 2 19 Status Bat cc2 secheesccccesteecerenssiiee 2 3 binding spenarisanienniniii 4 22 Strips default formats cccceeeee 2 27 discarding ceeeeseeeseeseeeee 3 14 COCUMENL c ce cecceeseeceseeeeees 2 18 JOM ese adieiiavas 3 10 FENCES unnn oniran aeiia 4 13 Keepin n a EEEN 3 9 layers itato eienen 2 18 SIVE a E E E OEA 3 11 January 2005 Deskan Express Color v6 0 1 5 SCANNING oo eeeeeeseeeeeeeeceseeeneeenes 3 9 Swapping 0 eeceeeceeseesseeseeeeeeeeeees 2 23 symbols in manual text 1 3 System requirements 1 4 1 5 operating system 1 4 1 5 T Target layer 2 12 Target Layer cee eeeceeeee 4 18 Terminating Deskan Express 2 29 Test SCANS 3 8 Thick document scanning 3 7 Brightness 0 ccceeceeseeeceseeeeeeeeees 3 7 TACKS E
114. eft and right edges respectively of the image This is particularly useful for large images Another useful tool for scrolling an image is the centring facility selected with the View Centre menu option or its equivalent icon Selecting centring causes the cursor to change shape while inside the image area to four inward arrows see Figure 2 3 b p 2 2 Placing this cursor anywhere on the current view and left clicking centres the view on that position if it is not too close to the image boundary Zooming Zooming means making an image appear closer Zooming In or further away Zooming Out Zooming doesn t affect the actual raster image it merely changes its appearance on the screen Each view can be zoomed independently The zoom factor is an indication of the number of screen pixels being used to represent one data pixel The zoom factor of the current view is displayed in the status bar field with a Z in front Positive zoom factors magnify the image whereas negative zoom factors make the image look smaller At a zoom factor of 1 one pixel in the data is displayed as one pixel on the screen At a positive zoom factor the screen image will be enlarged relative to the original scanned document by the ratio of the screen pixel size to the scanner s pixel size Hence the screen will show only a small part of the whole image When a new raster image is first displayed it is shown at a zoom factor of one This
115. eft button to fix circle in place Another dynamic circle with the same centre immediately appears attached to the cursor A series of concentric circles can be placed with each successive left button click 5 Click the right button to free the cursor of the dynamic circle Circle by Circum Draws a circle using the first point as a point on the circumference and the second point to define the centre To draw a circle by circumference 1 Select the checkable menu option Tools Circle by Circum The cursor changes to a cross over a solid square with the square representing the size of the defined line width January 2009 Deskan v7 1 4 7 Image Editing 2 Click the left mouse button on the point to be a point on the circumference of the circle Make sure left button is released A dynamic circle centred on the current cursor position extends out to touch the previously fixed circumference point 3 Move cursor to place the circle s centre at the required position 4 Click the left button to fix circle in place 5 Click the right button to free the cursor of the dynamic circle Arc Start End Edge Draws an arc using the first point picked as the start of the arc the second point as the end of the arc and the third as a point along the arc To draw an arc by Start End Edge 1 Select the checkable menu option Tools Arc Start End Edge The cursor changes to a cross over a solid square with the square representing the size
116. eieeiichcctiecs 4 15 8 bit grey scale eee 2 14 Clipboatd vevns chiki inomi 4 14 A Closing Deskan V7 1 ecceeceesseereereees 2 29 Active layer onionenn 2 12 document 0 eects 2 19 Adjustments layer inenen a eet tS 2 20 COlOU Hiss n 3 17 Colour Penal EE E 3 15 Save as default 4 bit 5 12 MATING ienai 3 15 Clip Noise monument widths 0 00 3 17 LOW r sd scssssses cons ccecsceoieve 4 5 APNG 2s seveccsegeaeti seve seven wien nee 6 4 LOWE 0 0 5 12 Application window e 2 1 Upper ooer 4 5 Arc Centre Start End eee 4 9 SMU PPP acei ienesis 5 12 Arc Start Centre End ccccc 4 9 Define background 4 11 Arc Start Edge End cccceecee 4 8 Drawing Colour Arc Start End Edge ccceceeee 4 8 Sample 4 11 Arranging Windows s s 2 4 Select snieni 4 10 AITOW KEYS an B 3 Edit Default 4 bit palette 5 12 Arrow keene kosane 2 5 Edit Document Palette 4 4 Aspect ratio esssseeseeseeseeseeeeserse 6 8 Edit Layer Palette 4 3 Autoscan Load Document Palette 3 6 Setting sounds eee 2 28 Measure Pixels 0 0 0 0 4 4 WHAt AS It seaceteccssevevecocoru testers 3 14 Merge Palette Entry to B Background Colour 4 4 Drawing Colour 4 4 Background Colour 4 11 Save as Default Palette 3 6 Batch processing 004 1 7 6 11 Sort Document Palette 4 4 comma
117. emoved from the image and an undo buffer is established Line This tool allows you to draw straight line segments To draw a line of pixels Select the checkable menu option Tools Line The cursor changes to a cross over a solid square with the square representing the size of the defined tool width 1 Adjust line width using the keypad and keys or by selecting a value from the Tools Drawing Size command and adjusting the appropriate selector depending on the drawing mode 2 Click the left mouse button on the point to be the beginning of the line segment Make sure the left button is released as the line starts at the point the button is released A dynamic line stretches from the starting point to the cursor The view can be scrolled or zoomed while drawing the line or a different view of the same document can be entered 3 Move the cursor to end point and left click on the end point of segment to fix it in place 4 Now the last point selected becomes the starting point of a new segment Either click right button to free cursor from dynamic line or repeat steps 3 and 5 to build up a chain of line segments 5 Click the right mouse button to free the cursor of the dynamic line Rectangles This tool allows you to draw a regular orthogonal rectangle You pick one corner point and drag a rubber band rectangle image to the other diagonally opposite corner To place a rectangle in the image 1 Select the checkabl
118. ent Restriction p 4 18 4 Select the raster element as described in the section Selecting Elements p 4 19 The selected pixels appear in the highlight colour 5 Click the left button again to confirm the selection and move the selected pixels to the target layer or click the right button to cancel the selection If target layer has a different drawing colour than the active layer the moved pixels will be seen to change colour M The confirmation mouse action can be used to initiate the next selection M This mode of operation can be set but selections cannot be performed unless a target layer has been set Copying Selections To copy selected pixels to the target layer 1 Select the checkable menu option Tools Do Select Copy Selections 2 Select the active and target layer as described in the section Layer control buttons p 2 23 3 Select the appropriate extent restriction as described in the section Extent Restriction p 4 18 4 Select the raster element as described in the section Selecting Elements p 4 19 The selected pixels appear in the highlight colour 5 Click the left button again to confirm the selection and copy the selected pixels to the target layer or click the right button to cancel the selection vi The confirmation mouse action can be used to initiate the next selection M You will not see the copied data in the target layer since the active layer is always displayed on top M
119. entals Colour Palettes and Transparency Colour Within Deskan v7 1 each layer can be one of the following Monochrome 4 bit colour 8 bit colour 8 bit grey scale 24 bit colour These layers can be grouped into three types monochrome layers which have no stored palette 4 bit colour 8 bit colour and 8 bit grey scale layers which have their own palette and 24 bit colour layers that have no palette Monochrome With monochrome images there are only two possible pixel values and they are fixed as data and background Because of this they have no palette and are subsequently treated differently to the other types of layers In short the data will always be shown in the drawing colour see Error Reference source not found p 4 10 and the background will always be shown in the base colour see Colour Base Colour Select p 5 11 4 bit and 8 bit colour These layers both have a palette see Layer and Document Palettes p 2 16 with the 4 bit containing 16 colours and the 8 bit containing 256 colours As they have their own palette every entry in those palettes will match an entry in the document palette If the 4 bit layer is created within the document its palette will be a copy of the default 4 bit palette It should also be noted that for 8 bit layers the layer palette and document palette will contain the same entries but the order of the entries may differ 4 bit colour layers also have their own default palett
120. er When they are scanned using different modes and resolutions the quality of those lines can vary The edges can become jagged and different circumstances can cause light areas to appear within the lines It is also possible that the detection may become confused with stray marks on the paper These are the factors which affect the line quality and are often referred to in this manual as distortions When the errors occur it is often possible to fix them by using the editing tools to remove the stray marks to darken light areas within the lines or straighten out the edges This must however be done with caution as it has a direct effect on the accuracy of the final image The following paragraphs list the possible errors and describe possible causes and remedies Error 1 Could not find a cross in the expected area This error indicates that nothing resembling a cross could be found in the image at the expected location The view in the window will show the rectangle at the expected position January 2009 Deskan v7 1 3 12 Scanning If the expected position is along the vertical line connecting the tick marks then there are two main causes 1 The scanner was impeded causing extra scan lines to be acquired between the last tick mark found and the highlighted location This can be tested for by measuring the distance from the last found tick mark and the middle of the expected location This distance should be approximately 10mm and a
121. er files are copies of the original files and have a Lxx extension where xx is a number To import a file as a layer use Layer New Import You will be given a file opening dialog to choose a raster file Select a raster file and click Open Deskan v7 1 will make a copy of the imported file for inclusion in the current document leaving the original intact The name of the selected file is used as the layer title and the complete path of the original file is stored as the source for that layer If no target layer is specified in the current document the newly imported layer becomes the target and is marked as being modified Saving Closing Documents and Layers After you have finished working on your document you can save either one or all of the layers back to the same document or into a new document Whenever layers are being saved a list of layers is displayed allowing individual layers to be selected and their formats to be altered January 2009 Deskan v7 1 2 19 Fundamentals g EEL l i oe ES Ti PackBits Cancel Figure 2 8 Save Layers Dialog By default some layers may be highlighted The layers which are highlighted depends on the context and will be described in the appropriate section The two buttons in the Select group offer a convenient way to quickly select or de select all the layers The format selector the bottom left corner of the above figure containing Tiff PackBits will
122. er pull down menus when either the menu item is clicked on or when its hot key is pressed The hot key for a menu item is the letter or number shown in underscore in the menu For example to invoke the menu command File Open using hot keys simply press Alt F then O Menu options which are unavailable in a certain context are displayed in dimmed text and are said to be greyed out Context menu The Context menu is a small popup menu which appears after a short delay when the right mouse button is held down while the cursor is on the image area January 2009 Deskan v7 1 2 2 Fundamentals It contains four options which vary according to the current function see Figure 2 2 p 2 2 For example if the current function was zooming in and out the menu options are Zoom Out Zoom In out Zoom One and Settings If the right button was being used in reset mode to back out of some operation then the first option in the menu would be Reset There is a user definable delay between pressing the right button and the appearance of the popup menu in order to allow the user to quickly click the right button to reset or zoom without the menu appearing If the delay is too short and you can t click fast enough to avoid the menu you can alter it by selecting the File Set Up menu option and increasing the Context Menu Delay Millisec input field to a suitable value In any case if t
123. erlaps into the second strip of the scanning base 3 Fasten it to the scanning base using tape at the corners The tape needs to be as thin as possible to minimize any parallax distortion 4 Position the Scanning Guide over the first strip by sliding the circular lug into its recess then swing the other end from side to side until it slips into its recess Position the scanner at the bottom of the Scanning Guide Start Deskan v7 1 and select File New Scan Enter a file name that does not exist and press save When the Deskan Settings dialog is displayed set the mode to Black White and select a resolution to 200 a Brightness of 130 and the scan length to 300mm 9 Start the scan of the first strip using the command Scan Scan strip 10 When the Omron Scanner dialog appears select OK 11 Once the strip is displayed select the menu option Scan Keep Strip to save the information Processing will occur and finish by placing the word kept in the windows title 12 Scan the second strip by selecting Scan Scan strip again When the Omron scanner dialog re appears slide the guide right one strip by lifting the bottom end sliding the guide up and to the right then back down into the next recess Lower the bottom end There is no need to move the scanner or lift if off the guide Once in position press the purple button on the scanner 13 Join the strips by selecting the command Scan Join 14 When th
124. esired values The control point will be shifted to that location in the image Placing Adding marker points Marker points may be added to a raster image by selecting the Transform Add Marker menu option or its equivalent toolbar icon This is identical to adding control points except that a marker point has no real world coordinates That is the only identify a point in the image The edit move and delete commands all work on both control and marker points Editing control points The attributes of an existing control point can be easily modified Firstly select Transform Edit and move the cursor onto the control point It will change colour indicating it has been targeted Click the left mouse button and the Raster Control Point Marker control point editing dialog box appears Editing the pixel coordinates actually moves the control point to that location after the new values are accepted by clicking the OK button B No two control points may have the same ID pixel coordinates or world coordinates Moving control points Control points can be moved using the mouse Select the Transform Move menu option click the left mouse button once on the desired control point ensuring it becomes highlighted and move the cursor to the new position Don t try to drag the control point Click the left mouse button again to deposit the control point in the new position If the right button is pressed before depositing the co
125. f layer names to process If the list contains layer names that can not be found the missing layers are logged and a failure occurs Command List Open lt documentFileName gt This command opens the document named as the documentFileName parameter for processing The newly opened document is automatically fitted to the view so it is seen in its entirety It is highly recommended that you save and close all documents before running a batch process using the File Run Batch command since the only open document which the batch file can access is the one which has the input focus at the time the batch file is run If the first document to be processed in the Batch process is the currently focussed one no Open command should be used as the Open command causes the currently focussed document to be closed without saving and any unsaved modifications would be lost Any other open documents apart from the currently focussed one are inaccessible to the batch process and waste memory resources In addition any attempt to open one of these documents will cause an error If the Open commands fails for any reason then a failure condition results Transform lt RasName gt layer list All layers specified in layer_list will be transformed with the output creating a new document called RasName Join The Join command performs the join operation of scan documents It has been included as a batch command so the documents can be scanned du
126. f you do not wish to select layers for saving prior to the operation uncheck the checkbox If new layers exist within the document the checkbox is not displayed and a message identifying that new layers exist and will be saved is displayed Press Continue Cancel will abort the whole rotation process 4 Select any layers for saving from the Save Layers before Binding dialog if desired Click Continue to start the rotation process Cancel will abort the whole process To rotate an image by some other angle 1 Select the File Rotate Angle menu option A dialog box appears 2 Input the angle of rotation between 360 and 360 degrees in the data entry field and click OK Positive angle values rotate the image anti clockwise negative values rotate clockwise 3 If there have been unsaved modifications to the document the Save layers before binding checkbox appears in the warning dialog If you do not wish to select layers for saving prior to the operation uncheck the checkbox If new layers exist within the document the checkbox is not displayed and a message identifying that new layers exist and will be saved is displayed Press Continue Cancel will abort the whole rotation process 4 Select any layers for saving from the Save Layers before Binding dialog if desired Click Continue to start the rotation process Cancel will abort the whole process S
127. first strip see Use the document Palette in next paragraph This palette is also used for all subsequent strips The second additional processing occurs during the saving of each strip by converting the data as it is saved Due to the importance of the palette contents and order the menu options that allow modification to the document palette will be disabled during the remainder of the scanning operation When the Use the document Palette checkbox is enabled the Document Palette will be used for colour reduction otherwise the program will automatically derive a suitable number of entries from the first strip as a preparation to keeping that strip The derivation of the colour palette can be a time consuming process if the data being used has a high resolution or large format size It can also prove to be unnecessary if there are a large number of similar images to be scanned To overcome this the Use the document Palette checkbox Scan Derive Palette and Colour Save as Default Palette or Colour Load Document Palette menu options can be combined so that this derivation is performed once only and without unnecessary processing The concept is to derive the palette separately using a low resolution sample strip of the original document that contains all the required colours then scan the document at full resolution The palette derived from the sample scan can then be saved as the default palette or loaded from the first
128. formation process will achieve the minimal overall distortion but there will probably be residual values Although with fewer points there may have been no residuals there could have been greater but unknown distortion errors in areas of the image remote from control points The report generated by Transform Residuals includes e the type of transformation the date on which it was performed a list of residuals for each control point including Control ID Weight X Component Y Component and Vector Norm Residuals Sum X and Y Residuals Sum of squares X amp Y Resultant X and Y Scaling factors Resultant X and Y Translation Resultant overall rotation Transformation Output Settings Dialog The Transformation Output Settings dialog box see Figure 6 4 p 6 8 can be summoned by the Transform Output menu option It gives the user control over the extent and pixel size and hence the resolution of the output raster file from a Raster Transformation There are two main groupings in the dialog Current which refers to the current document before any transformation is applied and Output which describes the new document after the currently selected transformation January 2005 Deskan Express Colour v6 0 6 7 Advanced Topics Figure 6 4 The Transformation Output Settings dialog The Current Grouping Extents This read only field indicates the current size extent in pixels of the
129. he Key field then click on the Apply Key button to associate the new Quick key with the menu option The Find Key button is a convenient way of finding which menu option is associated with the character in the Key field The Default button resets the default key mappings Special Keys F11 Function key F11 is equivalent to the command View Grid File and will display a representation of the grid file using Notepad F12 Function key F12 is equivalent to the command View Log File and will display the Deskan Express log file using Notepad The Escape key is a general purpose key whose use depends on the context in which it is pressed When a long process is underway and the escape key is pressed then a dialog will normally pop up offering the chance to cancel that operation If however raster editing is being performed then the escape key will remove that editing tool from the cursor Save Formats When the Save Format button is pressed a new dialog is displayed allowing default formats to be set for each category of image January 2009 Deskan v7 1 2 28 Fundamentals Figure 2 13 Default save formats dialog These are used to set the format of each layer as it is created When the layers are being saved the associated dialog provides a simple mechanism to change from the default value if desired see Saving Closing Documents and Layers p 2 19 Soun
130. he default is the same as the Edit Paste All from menu option Finally the E Paste icon is used to initiate the paste Clear Buffer The Edit Clear Buffer operation eliminates any data stored in the buffer by an Edit Cut Fence to Buffer or Edit Copy Fence to Buffer Its purpose is to free up memory held by the buffered data which may greatly improve performance if the buffer was large Transferring Data between Layers Within Deskan v7 1 data can be transferred between layers by using fences or selections The selection tool is straightforward as it is restricted to monochrome January 2009 Deskan v7 1 4 16 Image Editing and the data being placed uses the drawing colour For a full description of this tool see Layer Separation with Selections p 4 17 The fence operations are more complex in that the data may contain pixels of varying values that have different meanings depending on the layer they are being placed into This section describes this process to give a better understanding of how fences operate For this description let us assume that we are pasting from a fence into a layer see Pasting Operations p 4 15 The process identifies the defined background colour for both the fence and the layer and all pixels in the fence that match the fences background will be placed in the layer using the layers background All the other colours in the paste will be converted to the nearest colour that exists
131. he Parallel Port Adapter PPA in Step 5 3 Plug the PPA into the parallel port of the computer as shown in the figure 4 Plug the PPA into the scanner 5 Reconnect your printer to the PPA as indicated in the figure 6 Connect the power supply s cable to the PPA then plug the power supply into an electrical outlet 7 Turn on the computer Figure 7 1 Scanner connection Calibrating the Scanner with Deskan Calibration is necessary to obtain quality results 1 Ensure that a scan document is open see Scan Documents p 3 4 2 Open the Scanner Calibration dialog by selecting Scan Calibrate from the Deskan v7 1 menu Figure 7 2 Deskan v7 1 scanner calibration 3 Follow the instructions on the dialog until the OK button becomes available 4 Press OK and the calibration card will feed through the scanner and calibration will occur automatically January 2005 Deskan Express Colour v6 0 7 2 Setting up the DESKAN 6 Scanner Calibrating the Scanner using the Twain Interface Calibration is necessary to obtain quality results The Scanner Calibration dialog may be displayed by selecting Acquire from a TWAIN compliant application when the Omron HS600 is set as the TWAIN Source 1 N With the Scanner Calibration dialog box displayed insert the calibration card that comes with the scanner The calibration card will feed through the scanner and calibration will occur automatically Fig
132. he menu does appear unintentionally it will contain the current right button operation as the first option so all you need do is to select that menu option Dialogs Some menu items invoke sub windows called dialog boxes which accept user input either by typing in values or by selecting items or clicking buttons with the mouse Status Bar The status bar is the strip along the bottom of the main Deskan v7 1 Application window see Figure 2 2 p 2 2 It displays several helpful pieces of information in its four fields The rightmost field represents the current Zoom level It always contains a Z and a positive or negative zoom factor The next field to the left indicates current line weight drawing freehand size or eraser size The left two fields are used in various ways prompting the user to carry out certain tasks displaying the current raster editing tool and displaying the progress of certain activities The display of the status bar can be toggled by selecting the checkable menu option View Status Bar Icons and Toolbars Icons provide a convenient shortcut to access many of Deskan Express s functions Icons generally have a one to one correspondence with menu selection sequences Fly over hints tool tips provide a clue as to the function of each icon when the cursor passes over it Icons are arranged in groups called toolbars Toolbars are classified according to the general usage of the icons it c
133. hey have no palette There are two tools available that manipulate a layer s palette in an interactive way They can be selected by Colour Merge Palette Entry to Drawing Colour and Colour Merge Palette Entry to Background Colour Once the tool is selected a left button press on a colour in the image will modify the palette definition for that pixel s palette entry to match the definition for the currently defined drawing colour or background colour depending on which tool was selected The tool also has the ability to accept multiple pixels by dragging over an area In this case every pixel within the selected area is checked and all associated palette definitions are modified For each adjustment made with the left button a press of the right button will undo that change This undo feature is only available while the tool is selected and once the tool is changed any adjustments made become permanent The tool remains selected when using controls to scroll and zoom Cut and paste operations on pixels modified this way will cause the pixels themselves to be modified during any subsequent cut copy and paste operations Editing the document palette The document palette can also be edited in a similar way to layer palettes by using the command Colour Edit Document Palette There are two differences between the two dialogs Firstly the Edit Colour button produces the standard Windows dialog for defining a colour Secondly accept
134. iage again and tighten the bolts firmly Reconnect the scanner to the carriage Lift the Scanner off the glass and slide it to the bottom end of the Scanning Guide Figure 3 2 Attaching the scanner catch to the scanner To check that the assembly is correct refer to the first paragraph of Scanner Positioning e When the scanner is sitting flat on the Scanning Base ensure the L pin is perpendicular to the Scanning Base so that it does not catch on the right hand Scanning Guide Scanner Positioning When positioning the scanner on the guide there are one of four positions available identified by small holes in the right hand side of the guide The bottom position on the guide is the end closest to the handle When standing at the bottom of the guide the DESKAN stencil is visible on the front of the scanner and the scanner cable is at the left rear of the scanner and the autoscan button is at the top right side All of the scanner positions correspond to the various paper heights indicated by the flags on the left hand edge of the Scanning Base When the application is opened each time the scanner will warm up and then the first strip is always scanned with the scanner placed at the bottom position in the guide Depending on the scanning height selected the scanner will move up the January 2009 Deskan v7 1 3 3 Scanning guide to one of the other three positions on the first strip then from there back to the bottom
135. ialog containing a selection of colours to choose from The colours offered again depend on the current active layer If it is monochrome or 24 bit colour then the documents palette is offered For other layers the palette belonging to that layer is offered Selecting the menu option Colour Drawing Colour Sample allows you to select the colour from the active January 2009 Deskan v7 1 4 10 Image Editing layer While this activity is enabled the message Define Drawing Colour will be displayed on the status bar and each click of the left data button will update the drawing colour to the value of the pixel selected The selected colour is also reported on the status bar with the message Drawing red value green value blue value This option is not available for monochrome as there are no colours to sample from e A common problem here is trying to select a colour that actually exists on a lower layer When this happens the selected colour will match the background colour of the active layer The problem can be avoided by switching transparency off while selecting the colour Mi When using the drawing tools it is best to have the tools toolbar displayed as this gives a visual reference to the colours on the Toggle Drawing Mode button To define the background colour This is initiated by selecting Colour Define background While active the prompt Define the background colour is displayed and each click
136. ialog will be Select highest to clip and when clipping the upper end the title will be Select lowest to clip When you Select the highest to clip then all entries in the palette below and including the selected entry will be modified to be black The Select lowest to clip will modify every entry above and including the selected entry to white Drawing Tools Deskan v7 1 provides a powerful set of raster editing tools They provide for drawing straight lines freehand lines rectangles circles and arcs with adjustable width of line and erasing existing raster data with an adjustable size eraser tool All the drawing tools with the exception of the eraser and freehand drawing pen allow scrolling zooming changing of line widths and colour during the drawing process that is while the dynamic shape is displayed see Tool Modifiers p 4 10 The freehand draw and erase tools have a restricted usage as explained in the following paragraphs Mv Both the freehand drawing tool and the eraser cease to function if the cursor drifts out of the image area To reactivate them the left mouse button must be released and held down again Mv Each document maintains its own current drawing tool independently As a result the drawing tool selected while one document is in focus may change or disappear when a view belonging to a different document is made current Draw A freehand line drawing tool is provided A li
137. identified by measuring the distance between the horizontal tick lines up either side of the scanned strip Under normal circumstances this would measure at approximately 10mm but when the performance is deteriorated may drop as low as 6 or 7 mm In some cases this problem can cause the scanning of a strip to fail When this occurs displaying the control markers select View Control will reveal a consecutive pair of markers that do not fall on a horizontal tick line possibly followed by a tick line without a marker This is caused by the tick separation being excessively smaller that its correct value To correct the problem recalculate the scanning margins using the command Scan Utilities Autoscan Margins This command will automatically recalculate the effective Y resolution at all nominal resolutions M This problem arises when the automatic setting of the scan margins and the scanning of a strip are performed with the computer running under significantly different loads Keep Errors Occasionally the Keep operation may display an error message saying that the strip cannot be saved There are three reasons why this might happen 1 The system could not locate the cross at all Errors 1 to 3 2 The system could not locate the cross accurately enough Errors 4 to 9 or 3 The strip was too distorted to be accurately adjusted Errors 10 to 12 January 2009 Deskan v7 1 3 11 Scanning In the first two cases the view of
138. iew can be scrolled or zoomed while placing the line or a different view of the same document can be entered 3 Click the left button again to fix the angle of the first side of the rectangle Make sure left button is released A dynamic rectangle now stretches around the area defined by the starting point and the current cursor position 4 Move the cursor to the opposite corner of the required rectangle and click the left mouse button to fix it Note that the base is still defined allowing the placement of more rectangles 5 Clicking the right mouse button reverts to a dynamic line from the starting point to the cursor ready to adjust the slope of the base of the new rectangle Click the right button again to free the cursor of the dynamic line Circle by Centre Draws a circle by using the first point you pick as its centre and the second as a point on its circumference The command repeats assuming the same centre point which makes drawing concentric circles easy To draw a circle by centre 1 Select the checkable menu option Tools Circle by centre The cursor changes to a cross over a solid square with the square representing the size of the defined line width 2 Click the left mouse button on the point to be the centre of the circle Make sure left button is released A dynamic circle extends out from the centre point to the current cursor position 3 Move cursor out from centre point to the required radius 4 Click the l
139. ile then the extents of the file are used B A file with an adf extension is an Auxiliary Data File and is used to store additional information such as palettes or fences Pasting is similar to using the stamp tool modifier and provides the ability to re link to the data and to zoom and scroll during the operation For both Paste operations clicking the right mouse button lets the cursor to temporarily release the data being pasted so it can reposition its gripping point Clicking the left button reattaches the data to the cursor A second consecutive press of the right button will cancel the Paste operation For a detailed description of how the colours are mapped from the source image to the target image refer to Transferring Data between Layers on page 4 16 M Pasting data from the Buffer does not remove the data from the Buffer so the same data that was cut or copied once can be pasted onto many parts of the scan image Moreover the Buffer retains its data if a different raster file is loaded so it can be used to transfer data between files January 2009 Deskan v7 1 4 15 Image Editing Paste Transparent The Edit Paste Transparent from menu options paste the data held either in the Buffer or in a File depending on the sub menu option chosen Buffer or File so that both the original data and the pasted data are superimposed Effectively the data pixels are pasted only A copy of the fence line that was use
140. image as width x height Resolution dpi This read only field displays the current resolution of the image in dots per inch dpi Pixel size WU This read only display field shows the current width and height of an image pixel as Across x Down in world units WU These are the actual distances on the ground that a pixel in the image represents Deskan v7 1 does not adjust the visual display of the image to account for different pixel sizes or non square pixel aspect ratios It displays all pixels in an image as small squares of the same size Scaling an image does not affect the pixel aspect ratio or size as displayed it varies the number of pixels in the document Helmert Affine or Projective transformations however can alter each of the number of pixels in the new document their real world size as well as their aspect ratio the Helmert transform does not affect pixel aspect ratio Deskan v7 1 still displays pixels as squares on the screen regardless of their real world aspect ratios The Output Grouping Extent This read only field indicates the size extent in pixels of the image as width x height after the transformation defined by the control points and the transform type selected in the Transform menu January 2005 Deskan Express Colour v6 0 6 8 Advanced Topics Resolution dpi This read only field displays the resolution of the image after the transformation in dots per inch dpi Pixel size WU
141. inal view is restored CLOSING A VIEW Close one of the View windows by clicking on its Close button located on the window frame In Windows XP this is the button with the X in the top right corner CLOSING A DOCUMENT Select the menu option File Close If no modifications were made all the view windows disappear immediately leaving an empty Deskan v7 1 Application Window The configuration of the document s views number position and zoom level at the time of closing is stored and is reconstructed when the document is reopened later January 2005 Deskan Express Color v6 0 B 3 Tutorials Tutorial 2 Colour Layers Objectives To learn how to interpret the displaying of multiple colour layers This tutorial guides you through using the basic controls for displaying layers You will open the document called multilyr and view it under different settings and be shown common pitfalls that may be encountered Procedure 1 2 3 10 11 T2 Open the document multilyr using File Open Open all the layers using Layer Open Ensure the Layers Toolbar is visible using the command View Toolbars and checking the Layers checkbox When this toolbar is visible the left list box can be used to select the active layer and the right list box can be used to select the target layer Switch transparency off using Colour Transparency You will now see a white background a red circle and the w
142. inches high 2 1 Figure 2 2 Deskan v7 1 Application Window Note the context menu in centre of screen 2 2 Figure 2 3 Examples of cursor types a Normal neutral cursor b Zoom 1 Centring cursor c Zoom In Out cursor d Drawing tool cursor Note the square at the centre representing linewidth 2 2 Figure 2 4 The Readout Toolbar 2 7 Figure 2 5 A view containing some different graphic overlays 1 Left Control Point 2 Middle Polygon Fence 3 Right Tracking rectangle 2 8 Figure 2 6 Tracking facility Note the rectangle in the right window tracking the extent of the left window 2 9 Figure 2 7 New Blank Layer Dialog 2 19 Figure 2 8 Save Layers Dialog 2 20 Figure 2 9 The View Settings dialog 2 22 Figure 2 10 The Document Information Dialog 2 29 Figure 2 11 The document information dialog 2 26 Figure 2 12 Configuration dialog 2 27 Figure 2 13 Default save formats dialog 2 29 Figure 2 14 Sound settings dialog 2 29 Figure 2 15 The page setup dialog using paper units 2 31 Figure 2 16 The Page Setup dialog using world units 2 32 Figure 3 1 The components of the Deskan Express hardware 3 1 Figure 3 2 Attaching the scanner catch to the scanner 3 3 Figure 3 3 Scanner positioning dialog 3 4 Figure 3 4 Initial Settings Dialog 3 5 Figure 3 5 Scanning Test Strips 3 8 Figure 3 6 Control Crosses centred between Ticks on Guide 3 10 Figure 3 7 Setting the scanning margins manually 3 16 Figure 3 8 Adjusting s
143. ing the changes affects every layer in the document including any layers that may be closed It is also possible to completely replace the document palette or save it to an Auxiliary Data File although these features are normally only used in relation to scanning images If anew document palette is loaded into an existing document then every palletized layer will be modified to suit the new palette Another modification available for the document palette is the sort option This is accessed via the command Colour Sort Document Palette and simply sorts the entries in the palette into ascending order of average intensity In some cases this makes the palette easier to work with but it has no effect on the document other than the order of display in the dialog Scanning and Palettes When a document is scanned each colour on the original document is normally captured as several shades of that colour This is due to both noise and lighting variations picked up by the scanning system This becomes particularly important January 2009 Deskan v7 1 4 4 Image Editing for Black White as these colours most often represent the background In order to correct this problem two commands have been provided Colour Clip Noise Lower and Colour Clip Noise Upper When either of these commands are selected a palette is offered that contains the layers palette sorted on average intensity If clipping the lower end of the palette the title of the d
144. ion such as pex or tif All other raster files in the document have a Lxx extension where xx is a number from 01 to 99 A Deskan v7 1 document may contain up to 20 layers Layers have unique titles up to 20 characters long no spaces or commas which the user is prompted to input whenever a new layer is created What s an RCF The Raster Control File RCF is an ASCII format file which contains housekeeping information about the document If the RCF is deleted or moved to a different directory away from its raster files the document no longer exists Because of the close association between a document and its RCF it is sometimes convenient to refer to them interchangeably for example opening an RCF is equivalent to opening a document Raster Control Files are used for both single and multi layered documents The information held by the RCF file includes Layer information For each layer in the document the RCF lists that layer s format title current drawing and background colour and a flag indicating active target status e Transformation control information such as control point details transformation type and output settings Last used view centre coordinates and zoom level for saving and restoring the window layout January 2009 Deskan v7 1 2 12 Fundamentals Scanning status information Saved fences Saved locations The documents palette information Deskan v7 1 will normally c
145. ions are always output to a new document Control points and Markers What are control points A controlled transformation requires the placement of control points in the raster image Control points are placed in the image either on recognizable features in the image or at some known pixel coordinate see Figure 2 5 1 p 2 8 The features selected as control points generally would have been previously surveyed and their World coordinates will be known accurately A control point appears as a graphical overlay in the shape of a cross with long arms A marker has shorter arms Control points have six pieces of information associated with them their ID weight pixel x pixel y World X and World Y The ID is a unique integer identifier for each control point It is automatically incremented as new points are added The weight is a measure of confidence in the accuracy of the control point The default weight is 1 If all control points have a weight of 1 then they all have an equal influence over the transformation If a control point has a weight of less than 1 then it has a reduced effect on the overall transformation The pixel x and pixel y are the coordinates of the control point in the raster image The World X and World Y are the World coordinates that the control point will try to assume during the transformation process What are markers Markers are very similar to control points except that they have no weight or world coo
146. is indicated on the bottom status line of the screen by Z 1 If the zoom factor is 2 then one data pixel is displayed as a block of 2 by 2 screen pixels Similarly for a zoom factor of 4 one data pixel becomes a block of 4 by 4 screen pixels The highest possible positive zoom is 8 A zoom factor of 2 means that a block of 2 by 2 data pixels are squeezed into one screen pixel Possible negative zoom factors are 2 4 8 16 24 32 40 and so on in multiples of eight until the entire image is fitted in the view How to Zoom It is possible to zoom in two ways 1 Use scroll wheel on the mouse to zoom in or out January 2009 Deskan v7 1 2 5 Fundamentals 2 In order to zoom Deskan v7 1 must be in Zoom mode indicated by the Four Arrows cursor shape and the text Zoom I O displayed in the status bar There are a number of ways of enabling and disabling zoom mode One way is to use the checkable menu option View Zoom In Out When this menu option is checked zoom mode is active The zoom mode is toggled each time the option is selected Zoom mode can also be toggled by selecting the Zoom In Out option from the context menu Hold down the right mouse button until the menu appears and without releasing it highlight the Zoom In Out option Release the button to select The tick beside the option means zoom mode is active also indicated by the cursor shape and the message in the status bar
147. it layer Tools Tools Stamp Drawing tool which allows drawn shapes to be repeatedly stamp printed onto the image Tools Drag Stamp Tool modifier which allows drawn shapes to be used like paintbrushes _ Tools Fill Drawing tool modifier to cause closed shapes to be drawn filled in the current foreground colour January 2009 Deskan v7 1 5 8 Menu Options E Tools Drawing Size Summons a dialog to allow the user to adjust the linewidth and eraser size E Tools Drawing Mode Foreground Sets the drawing colour to the current foreground colour representing data pixels Bi Tools Drawing Mode Background Sets the drawing colour to the current background colour Drawing in background colour is equivalent to erasing E Tools Do Select In Fence Restrict the selection process to within a fence L Tools Do Select In View Restrict the selection process to within the current view E Tools Do Select Move Selections Enable the moving of selected elements from the Active layer to the Target layer Tools Do Select Copy Selections Enable the copying of selected elements from the Active layer to the Target layer Tools Do Select Delete Selections Enable the deletion of selected elements from the Active layer Tools Do Select Select by Point Area Enable the selection of raster elements either by pointing and clicking or by dragging a rectangular area around them
148. it_colour is still white The data in non monochrome layers is not effected by changing the background appearance Select monochrome as the active layer and you will see that its background has changed to yellow Monochrome layers are a special case in that they have only one foreground and one background colour To provide a visual sense of which is background the background data of a monochrome layer will always be the same colour as the background appearance Switch transparency back on and select 8_bit_colour as the active layer Select Colour Define Background and select a point in the purple inclined rectangle position the cursor over the shape and click the left button You will January 2005 Deskan Express Color v6 0 B 4 Tutorials see that where the purple inclined rectangle was is now transparent and the white background of the active layer is no longer transparent You will also notice that the words 8 bit colour With Palette is still visible even though it is purple 13 Select Colour Measure Pixels and select a point in the inclined purple rectangle The status bar identifies the pixels as belonging to layer palette entry 71 Place a data point on the purple text and you will see that it uses palette entry 35 This is a problem that will be encountered frequently as the human eye is incapable of detecting all of the variations in colour that can be displayed 14 Return to normal display by Selecting
149. ith this command ensure that the file calib grd is not read only Care and Maintenance Scanning Base The scanning base is made from acrylic and should only be washed with mild soap or detergent and water Dry with a soft cloth Some chemicals are extremily damaging to acrylic in particular DO NOT use window cleaning sprays scouring compounds acetone petrol benzine carbon tetrachloride or lacquer thinner Sticky residues can however be removed with hexane kerosene or citrus based cleaner Solvent residues should be removed by washing immediately e Caution should be exercised when cleaning near and around the graphics printed on the scanning base No chemicals of any kind should be applied to the printed graphics otherwise damage to the graphics may result Likewise harsh rubbing of the printed graphics may also cause damage Scanning Guide Sides The sides of the Scanning Guide are made from anodised aluminium Aluminium cleaning agents should have a pH within 5 8 and be free of fluorides chlorides or sulphates Cleaning should be regularly performed using a soft cloth or fibre brush warm water and neutral detergent followed by thorough rinsing with clean water Ensure that all residues are removed from crevices Stubborn marks may be removed with a nylon brush or abrasive pad Greasy deposits may require a soft cloth dipped in white spirits To clean long neglected areas it is advisable to use proprietary cleaners specifi
150. kewing Skewing is exactly the same operation as rotation The only distinction is in the way the rotation angle is specified Instead of typing in an angle the skew operation prompts the user to draw a reference line in the image The image is then rotated until the line is either horizontal or vertical depending on whether the Horizontal or Vertical sub option was chosen To skew an image 1 Select the File Skew menu option 2 Select either the Horizontal or Vertical sub option 3 Click the left mouse button to fix the starting point of the reference line A dynamic line extends from the starting point to the cursor 4 Draw the line out at the required angle and click left button again to fix it in place 5 If there have been unsaved modifications to the document the Save layers before binding checkbox appears in the warning dialog If you do not wish to select layers for saving prior to the operation uncheck the checkbox If new layers exist within the document the checkbox is not displayed and a message identifying that new layers exist and will be saved is displayed Press Continue Cancel will abort the whole rotation process January 2009 Deskan v7 1 4 23 Image Editing 6 Select any layers for saving from the Save Layers before Binding dialog if desired Click Continue to start the skewing process Cancel will abort the whole process Crop to Fence The File Crop to
151. l see the Deskan v7 1 Application window with three menu options File View and Help January 2009 Deskan v7 1 1 5 Getting started If desired Deskan v7 1 can be started with the name of a document standard raster file or Deskan v7 1 batch file as a command line parameter Deskan v7 1 will then start with the document or image already opened Once Deskan v7 1 is running additional raster files can be opened using drag and drop The rest of this chapter is designed to help you become productive with Deskan v7 1 as quickly as possible Since you will no doubt have many questions about what Deskan v7 1 can do and how you can get Deskan v7 1 to work for you a section called Roadmap is provided see Appendix A The Roadmap is a flowchart designed to help you navigate your way through a Deskan v7 1 session bringing to your attention Deskan v7 1 s useful features just as you need them In addition some extra tutorials are provided All the example files required by the tutorial will be found on the distribution disks and will have been installed into the Deskan v7 1 directory To make the most of the tutorials and to assist you in using the rest of the manual please refer to the Chapter 2 January 2009 Deskan v7 1 1 6 CHAPTER 2 FUNDAMENTALS Fundamentals Chapter 2 FUNDAMENTALS Introduction This chapter provides background information about the concepts behind the application After reading this chapter it will be
152. l snas is 2 2 Arc Start Edge End 05 4 8 tE S ra ae e R 2 2 Arc Start End Edge 0 008 4 8 window resizing Circle by centre eee 4 7 Cut Fence t0 cccecceeseeteeeeetees Circle by Circumference 4 7 D COLOUE scales EES EEA 4 10 drag stamp eeeeeeseeseeeeees 4 12 Default values 00 cee eeeeeneeees 2 29 DT AW oo25s es LRE EE 4 5 Deleting i EEE EE AEE EET 4 6 ENE EEEE EE 2 24 a DEAE E E E E EAE cr 4 12 selections 0 0 ceeeeseeseeteeeteeeeees 4 18 General oeie niee Nene 4 5 Deskan Inclined rectangles 06 4 7 application window 0 2 1 PANG RE T 4 6 CIOSI E nii Neie snie 2 29 Modifiers 0 0 ccceeceeseeereeeeees 4 10 command line parameters 1 7 Rectangles ccceceeseeeeeseetees 4 6 SCANNING 0 eeeeeeeeseeeecseeeeeeeseeees 3 1 Seier r e 4 11 Deskan45 log 2 26 6 12 Sta Mpini k 4 10 Dialog Seanet n Ri ero 2 3 dyeline T iene eas 3 8 Add new layer 2 17 E Configuration 2 25 Document Information 2 24 Edit Enter location name B 3 Clear Buffer 4 16 Load locations to match B 3 Clear Fence 4 15 Quick key Mappings 2 27 Copy Fence to 4 14 4 16 Raster Control Monuments 6 2 Cut Fence to 4 14 4 16 Scan Settings 3 7 Define Box Fence 4 13 January 2005 Deskan Express Color v6 0 1 2 Index Define Polygon Fence
153. le New Scan creates a new blank document for use with the Deskan scanning facility A Deskan document is a special kind of document into which images are scanned during the scanning process It enables the raster image to be scanned in strips which are later joined to form the final raster document Scanning is treated in more detail in the section S p 3 1 Adding new layers to a document New layers can be added to a document by using the Layer New options If a new blank layer is required select Layer New Blank You will be presented with an Add New Layer dialog where you can accept the default layer title New_Layer_nn where nn is a unique number or choose your own title up to 20 characters with no spaces or commas January 2009 Deskan v7 1 2 18 Fundamentals Figure 2 7 New Blank Layer Dialog This dialog also allows you to specify the new layer as being the active or target layer as well as specifying the bit depth and grey scale characteristics of this new layer The new layer is marked as being modified meaning you will be prompted to save it on closing the document It will be given the filename made up of the document name with a Lxx extension where xx is a number Importing raster files as new layers An existing raster file can be imported as a new layer as long as it is of the same dimensions as the other raster files in the document New layers imported from existing rast
154. ll layers in the current document January 2009 Deskan v7 1 2 20 Fundamentals If you try to close a document which contains any modified layers you will be presented with a Save on Close dialog which lists the modified layers and gives the option of saving a selection of them Closing a layer You can close individual layers other than the current active layer using the Layer Close dialog or the Close Layer button in the View Settings dialog The document which owns the layer remains open Any layers which have been modified will be offered for saving prior to closing Saving current active layer To immediately save the active layer back to the same raster image file select the menu option Layer Save Exporting a copy of a layer To save the current active layer as a raster File Select the menu option Layer Export A file save dialog appears Enter a file name and format for the new raster image file for example newimage pcx Click the Save button The difference between Layer Export and File Save As is that the Export option creates a single raster file in any of the supported raster formats whereas File Save As creates a new document comprising of one or more raster image files in the selected format plus a Raster Control File The View Settings dialog Most layer operations are encapsulated in the View Settings dialog box see Figure 2 9 p 2 22 which can also be summoned by using th
155. long their vertical axis If more than three windows are open they are tiled in a grid pattern Window Arrange Icons This command arrange the iconized windows neatly at the bottom of the Deskan Express Application window client area Help Help Contents Displays the Help contents page showing an outline of the topics covered in the Deskan Express Help system _ Help Context Clicking this icon turns the cursor into a Help probe clicking with this cursor on menu options or icons invokes context sensitive help Help Using Help Gives hints on using the Help system Help About Deskan Express This option shows the version number of your copy of Deskan Express January 2009 Deskan v7 1 5 15 CHAPTER 6 ADVANCED TOPICS Advanced Topics Chapter 6 ADVANCED TOPICS Having mastered the general use of Deskan v7 1 this chapter can now be referenced for performing more advanced topics The Controlled transformation provides a mechanism to remove the more complex distortions in an image as well the ability to reference and measure the image using real world values This works well for planar coordinates but does not provide a geo referencing capability If the controlled transformation is being used to remove distortions then the process can be time consuming To reduce this problem the process can be performed overnight with the use of a special batch file This is also covered in this chapter Controlled
156. might take some time for the pixels to be highlighted Pressing the Escape key will cancel the selection operation Pressing the right button will stop the selection but will keep the already selected pixels highlighted To choose the option of Selecting by Pointing or by a Dragged area 1 Select the desired extent restriction as detailed in the section Extent Restriction p 4 18 2 Select the checkable menu option Tools Do Select Select by Point Area or by selecting the equivalent toolbar icon 3 Once this option is selected you can either select a region of pixels by pointing and clicking the left mouse button or by dragging an area The selected pixels appear in the highlight colour 4 Clicking the left button again will confirm the selection and carry out the selected operation Copy Delete or Move Clicking the right button when the pixels appear highlighted will cancel the selection 5 If the left confirmation click is on a fresh group of pixels the current selection will be confirmed and the new pixels will be selected Simple Transformations Introduction The simple transformations which include Scale Rotate Skew Flip and Crop to Fence from the File menu are transformations which are used to make adjustments to the size and orientation of the data in the image They act directly on the data of the current document as distinct from the Controlled Transformations see Controlled Transformations p 6 1
157. moving a layers Layer Remove Error messages Monochrome background in black This toggle defines how a monochrome image is initially displayed if it is being scanned or loaded from file This toggle has no influence on monochrome layers in existing documents When the toggle is on and a monochrome image is loaded the background information will be displayed in the darkest colour that exists in the default document palette and the data will be displayed in the lightest colour that exists When the toggle is off the reverse occurs with the information being the darkest Quick keys The Key Mappings button summons the Quick key Mappings dialog which allows the user to alter the Quick keys mapping Quick keys are user defined keys which can be used to access menu options without using the mouse They are different to the hot keys which are a standard feature of Windows applications The hot keys are the underscored characters in menu items The user must press the Alt hot key chord in order to access the main menu item and after that the hot key for each menu item in the menu sequence Quick keys however can reach deeply nested menu items with a single user defined keystroke without the need for the Alt key The Quick key Mappings dialog contains a list of menu end options not the intermediate menu options The user can highlight any option and enter a single unique alphanumeric character in t
158. n Out 2 5 CUITENE See eae 2 4 2 21 ICOMS ne e ei iei e 5 6 Other eaa 2 21 View Settings dialog Layer checkbox ossessione 2 23 Selected Layer group 2 22 Checkboxes neesii 2 21 Checkboxes 2 21 hiding Other layers 2 23 layer selection bOX 006 2 22 What is it 2 20 Views nanen RR 2 4 WwW Window Cascade cscs cucvccssscestievs 2 4 New Window 0 2 4 N EE E EE EE 2 4 arranging eeeesceeeeeeeeeteeeteeeeees 2 4 ICONS e Enon e 5 15 Opening rr 2 4 title Bar on aa 2 4 Windows XP oseeeeeesseseesseee 1 4 1 5 January 2005 Deskan Express Color v6 0 Index World Units 6 1 availability 0 0 0 0 cesses 2 31 placing control 0 6 2 6 3 PHINET sisceccsas cece 2 1 2 30 readout ieee iieis 2 7 ZOOM factorf ss eeeeeeeeeesseeiessereesse 2 5 ZOOMING en an 2 5 Cancellation cece eeeeeeee 2 6 escape KOY cececeeeeeeseeeeeeeees 2 6 Cee eee ee eran oe oe eee 2 6 TN OUb a a a 2 5 ONCE a eect n 2 6 l 7 Index Deskan Express System Requirements recommended Pentium 3 233 Mhz Minimum 256 Mb RAM minimum recommended for large colour images 768Mb is optimal Microsoft Windows 98 2000 XP Gigabyte or more disk space recommended for scanning an AO document at 600 dpi in Colour Deskan Express 6 Scanning Method Scanning action Resolution Active scan area Maximum document width Scanning time Document thickness max
159. n functions to scan hard copy documents into a raster image edit those raster images and print those images Scanning a document is a simple three step process create a scan document scan and keep the number of strips necessary to cover the document then join the strips to convert the scan document into a normal document containing the final image as its only layer As an alternative to scanning new blank images can be created existing images can be directly loaded by themselves as a new document or if their extents match they can be imported into an existing document Image data can also be exported to a large variety of raster image formats When reading raster files the format is automatically detected Once the image is obtained it can be displayed using multiple views each with independent zooming and scrolling Additional raster layers can be created at different bit depths monochrome 4 and 8 bit colour 8 bit grey scale and 24 bit colour and these used to break the image down into its components or trace off information from the original Up to 20 layers can exist within one Deskan Document A layer is one image in a set of images that are all overlaid An extensive raster editing toolkit is provided for manipulating data within the layers You can draw lines rectangles arcs and circles of pixels with the click of a button Pixels can be drawn or erased individually or whole regions can be filled or cleared Images can be r
160. n the white strip on the top of the scanner ADF regularly e Recalibrate the scanner anytime you clean the scanner lens or the white strip e Remove staples and paper clips from documents before scanning e Keep the area in front of and behind the scanner clear when scanning to maintain a straight paper path e To conserve disk space and to optimize scanning speed scan at the lowest resolution that will provide the image quality you require January 2005 Deskan Express Colour v6 0 7 5 APPENDIX A ROADMAP Roadmap Appendix A ROADMAP This table provides an overview of all the functionality of Deskan v7 1 and shows you where to find more information in the text The topics are presented in the order in which you would most likely require them during the course of a typical Deskan v7 1 session STARTING A SESSION OPENING A FILE See Opening a file How to load an existing raster image p 2 17 file so it can be edited and or printed CREATING NEW IMAGE See Creating a new How to create a new blank image for blank document p 2 18 drawing or pasting existing raster data ready for further editing and or printing SCANNING See S p 3 1 How to scan a image using Deskan BATCH PROCESSING See Batch processing How to use Deskan v7 1 s batch p 6 11 oriented command language for the unattended transformation of raster images January 2005 Deskan Express Colour v6 0 A 1 Roadmap USING DESKAN
161. nd list cc cccceceecceceece 6 13 DA Diba scores delaras ee ates 2 14 Commands ccecseseseseeseseseees 6 12 4 bit and 8 bit colour 2 14 COMMEHES vi ssesceremte eesti 6 13 8 bit grey scale eee 2 14 KE S E 6 12 ackeroundrnescicenieniniii 4 11 CRAMPS seis escccemtaesreele 6 14 GAWING igos gn rE EEE 4 10 failUTeS so eee ceeeeeseeseeseeees 6 12 Sener al sor vote eae 2 14 layer list soiien 6 13 ICONS cts an E REE 5 10 loggi g Yece tce cashes e 6 12 manipulation ceeccceeeeeees 4 3 Binding hrean eie 4 21 MONOCHROME seeeseseeeeeeeees 2 14 Bit depth reduction cccccceee 4 3 numberof nieni 3 6 Blueprints scanning of 3 8 of drawing tool oo 4 10 Border selecting colour 2 25 of graphical overlays 2 26 January 2005 Deskan Express Color v6 0 l 1 Index palette Sienne en 2 14 toolbar selection 06 2 4 reduction Layer 4 3 Transform Layers to 6 10 reduction scanning 3 5 Transform to Document 6 10 setting highlight 2 26 Transformation Output S 6 7 Colour reduction cccseseee 4 3 View Settings oo eee 2 20 Commands Distorted Strip ceceeseesseereees 3 11 batch processing 6 12 Distribution disk 10 0 ecceeeees 1 6 Component ocenicie 3 1 Docking toolbars eeeee 2 4 Configuration ccceeeeeeees 2 25 Document Context MeNu
162. ne will be drawn following the mouse movement as long as its left button is held down This tool will not draw beyond the screen view limits To draw a free hand line 1 Select the checkable menu option Tools Draw The cursor changes to a cross over a solid square with the square representing the size of the defined tool width 2 Adjust the line width by using the keypad and keys or by selecting a value from the Tools Drawing Size command and adjusting the Linework selector 3 Hold down the left mouse button and draw 4 A draw operation is finished when the button is released or the cursor leaves the view At this point the drawing is committed to the image and an undo buffer is established Erase The erase tool will not erase beyond the current screen view It might be hazardous if it could January 2009 Deskan v7 1 4 5 Image Editing To use the eraser 1 Select the checkable menu option Tools Erase The cursor changes to a cross over a square outline with the square representing the size of the defined eraser width 2 Adjust the eraser size by using the keypad and keys or by selecting a value from the Tools Drawing Size command and adjusting the Eraser selector 3 Hold down the left mouse button and move the cursor over the unwanted pixels to erase them 4 The erase operation is finished when the button is released or the cursor leaves the view At this point the erased pixels are r
163. ng a known scale for the source A good example of this is when dealing with a scan of a map as in Figure 2 16 This shows that control has been established and that the original map was at a scale of 1 100 000 The output scale could now be input as 50 000 or 200 000 resulting in an appropriate doubling or halving of the dimensions as appropriate January 2009 Deskan v7 1 2 32 CHAPTER 3 SCANNING WITH DESKAN Scanning Chapter3 Scanning with Deskan Express This chapter describes the use of Deskan v7 1 for scanning Initially there is a description of the components and special document format followed by step by step procedures for creating documents The process of producing an image using Deskan v7 1 is to place the document on the scanning base and scan the document as a series of strips starting from the left and progressing to the right These strips are then automatically joined by the software to produce the final image The scanning is done by a small A4 sized motorized scanner which has rollers that allow it to move down each strip by itself The system of guides controls the scanner as it moves collecting the scan data This means that to scan a document it takes three simple steps 1 Create anew scan document with the required resolution and colour settings 2 Scan and Keep the number of strips necessary to cover the document then 3 Join the strips to convert the scan document into a normal document containing
164. ng base s s s 3 2 Raster editing SCHUNG Up satis ctenteccteroieecseee 3 1 introduction ceeecsecesseeeeeeees 4 1 SCANNING sii cnt een ieee 3 1 Tool modifiers ccccccceeees 4 10 adjustments cceseeseeseeee 3 15 TOOISi 3 Aaa atte 4 5 AS a tWAIN SOUICE eeeeeeeeeees 7 1 Raster Transformation 6 6 9 AULOSCAN ceeeeeeceseeeeeseeeeeenes 3 14 j EL EEEE EEA A ess 2 11 Siaa te te APEERE SEEE ETS 3 7 Read Only sessesseeseeseesreeessrseeseeee 2 16 Keep ETTO Siion toeni 3 11 Readout ccccccccscecsseceeceesseeeseeees 2 7 resuming a session s es 3 14 Rectangle ST M e E A E EE E 3 11 inclined rectangle cee 4 7 SEQUENCE s e ie 3 7 orthogonal 0 eeeeeeeeeeeeees 4 6 SUMPS tafe Ait eae tees 3 9 Redo thick documents ee 3 7 raster UNdO cecscceecceeeeeees 4 26 Scanning base eeeeeeseeteeeees 3 2 Reloading cceceeseeseeeeeteeeeees 4 26 Scrollbar Sois eneee sbie 2 4 Remove Scrollino d ere npea 2 4 fo n a e 4 13 Selecting elements 0 0 4 20 Residuals ornen 6 7 COPYING 0 ee eeeeeeeceseeseesseeeeenes 4 18 Resolution Ae letin oii 6 5 tech eo oedas ct cadestceest 4 18 CONVETSION cceceesceeseeeseeeeees 4 23 dragging oe eeeeseeeseeseeseeeees 4 20 Edith gennin ei 4 23 extent restriction s es 4 18 for new documents 06 2 17 MOVING 00 ceeeceeeceseesseeseeeseeenes 4 18 for SCANNING eececeeeeeeeeeeeeees 3 5 POINTING eee eeeeeeeeee
165. ng point of the arc 4 Click the left button to fix the starting point in place A dynamic arc centred on the first selected point now extends clockwise from the previously selected starting point to a point on the line extending radially from the centre to the current cursor position Move the cursor to place the end of the arc in the required position Click the left mouse button to fix the arc in place Click the right button twice to free the cursor of the dynamic arc The right mouse button can be used at any stage to reset to the previous state as described in the status bar ND 91 Arc Start Centre End Draws an arc with the first point as the start of the arc the second as the radial centre point and the third as the end of the arc i For the arc by Start Centre End arcs are always drawn from the start point clockwise to the end point To draw an arc by Start Centre End 1 Select the checkable menu option Tools Arc Start Centre End The cursor changes to a cross over a solid square with the square representing the size of the defined line width 2 Click the left mouse button on the point to be the starting point of the arc Make sure left button is released A dynamic circle stretches from the starting point to the current cursor position 3 Move cursor to place the centre point of the circle in the required position 4 Click the left button to fix the centre point in place A dynamic arc starting on the firs
166. nsion e g pcx or tif Grey scale An image which contains a palette and every entry in that palette has the red intensity green intensity and blue intensity all equal to January 2005 Deskan Express Colour v6 0 C 1 Glossary __ eens bein ascending order of ey the entries be in ascending order of intensity If a document can be envisaged as a stack of transparency sheets each containing a subset of the raster data a layer is one of the transparencies Each layer is stored on disk in its own raster file button Positions identified in the image as having some importance Pixels Short for picture elements the tiny squares P l which make up a digital image Reset To click the RIGHT mouse button This usually is a quick way to terminate some D editing process Right click Quickly press and release the Right mouse button Select In terms of Layer separation by selection selecting pixels means to highlight them by either dragging an area around them or by left clicking directly on them In more conventional terms it means to choose e g selecting from a picklist or activating a menu option Standard A raster file with a standard raster file raster file extension e g pcx tif It may be either free or part of a document Tick marks Cross shaped marks imprinted on the Scanning Guide and used by the scanning software to align scanned strips for joining The vertical arms of these crosses combine t
167. nsuring the guide rail is furthest from you place part B into the slots of part A and finally part C into slots of part B all the while ensuring the guide rail on each part is positioned furthest from you You will notice that one side of the Scanning Base has a series of semi circular slots in it while the other side has a guide rail The system is designed to be operated with the Scanning Base orientated so that the semi circular slots are closest to you and the guide rail is furthest from you Fix a drawing onto the Scanning Base with adhesive tape but preferably use thin clear tape rather than masking tape as that reduces the possibility of gaps between the document and the Scanning Guide Make sure that the Control Crosses near the top and bottom of the drawing are not covered as they need to be seen by the scanner so that the software can align the strips for joining You will be able to ascertain this better after you fit the Scanning Guide If the drawing is transparent place a plain white sheet beneath it to stop the Control Crosses on the scanning base for the smaller sizes from showing through Scanning Guide Place the wheels of the Scanning Guide onto the guide rail and slide it to the left most strip to be scanned Locate the semi circular lug on the Scanning Guide into the semi circular slot on the Scanning Base M The Scanning Guide is best positioned by first lifting the end closest to you with
168. ntext menu Selecting View Fit or pressing the f Quick Key immediately zooms out enough so that the entire image can be seen Resolution Resolution is a measurement of the coarseness of the scanning process which produced a raster image It is defined as the number of pixels in the image representing a certain distance on the scanned paper In Deskan Express resolution is expressed as dots per inch dpi January 2009 Deskan v7 1 2 6 Fundamentals A typical value is 200 dpi which is offered as the initial default resolution when creating a new document The default resolution offered when creating a new document is user definable see Configuration dialog p 2 26 When a new document is created the user is presented with a dialog box showing default values for the height and width of the new image in pixels and its resolution in dots per inch These can be altered if necessary Thus all documents in Deskan v7 1 have a resolution defined ReadOut The ReadOut utility is a specialized toolbar which displays image measurement information It has two list boxes one for display options the other for units as shown in Figure 2 4 Carhmetert Figure 2 4 The Readout Toolbar The Coordinates display option makes it display the current cursor image coordinates The X Y Deltas option displays the x and y components of the distance of the cursor from the point where the left button was last
169. ntrol point in the new position it will be returned to its original position Deleting control points To delete a control point simply select Transform Delete and click on the control point to be deleted once it has become highlighted by the proximity of the cursor A dialog will appear to confirm the deletion Listing control points The six attributes ID weight pixel X pixel Y World X and World Y of all existing control points can be listed by using the Transform List menu option In order for this menu option to be available at least one control point must exist Displaying control points Control points appear as graphical overlays in the image and so their display can be controlled using the Views Current Control checkbox in the View Settings dialog or by toggling the checkable menu option View Control January 2005 Deskan Express Colour v6 0 6 3 Advanced Topics Controlled Transformation Types These transformations require the addition of sufficient control points into the image before their options become available B If the control point values cause the selected transformation to produce residuals over a certain threshold the transformation will not be able to be initiated Helmert This is a four parameter transformation that requires a minimum of two control points The Helmert transform can only rotate scale and translate an image The orthogonality and relative scales of the axes a
170. o form a single vertical line up each side of the guide Transparent Every layer has a transparent colour If transparency is switched on then data on underlying layers will become visible displays the raster image World unit The units of distance that a length in a raster image symbolizes for example 1 cm ona map may represent 1 World unit e g kilometres on the ground Different from the paper units which an image represents on account of its scanning resolution If the resolution of an image is 200 dpi then 200 pixels in the image represents one inch or 25 mm or 2 5 cm of scanned paper January 2005 Deskan Express Colour v6 0 C 2 Glossary January 2005 Deskan Express Colour v6 0 C 1 Index INDEX Index BOX FENCE Teorienn 4 13 Buffer A Gp GEE e CPR 3 9 3 11 cleiton o 5 6 IOD EEEE 3 9 3 11 T EEE NEN 4 16 ad iE E R R 2 12 COPY Onei sonein i 5 5 Poa c s cee hcnata eens 6 11 CUE 10 nnno ai E 5 4 POX P E 2 10 General sienito 4 14 PS a E E 2 10 paste from 4 15 4 16 5 5 STO CEE O EE S 2 11 p ste tomirni ennenen 4 14 tif E E 2 10 c Calibration 24 bit COLOUL eeceeeeeseeeeeeeeeeees 2 14 monument width 3 17 24 bit colour reduction 4 3 SUEIPS cnini iia eii iie onis 3 18 4 Cancelling file opii eiorinn iane 2 17 4 bit colour 2 14 Circle by Centr skonines 4 7 8 Circle by Circum 4 7 Clear butter orsinaessooo nanses 4 16 8 bitcolott nennen 2 14 Clear fences i
171. o calibrate several strips in the one session Each strip is treated individually so calibrating strip 2 then moving the Scanning Guide to strip 3 and calibrating it will produce the correct results Providing that logging is enabled the details of each calibration is recorded in the log file The log file can be viewed by selecting View Log File or pressing function key F12 Notice that in the example provided the new average values match the measured values This is because it is the first calibration Scan 1 of Strip 2 Update Monument Widths Strip 2 Scan 1 monument 0 measure 7 0941 new average 7 0941 monument 1 measure 7 0906 new average 7 0906 monument 2 measure 7 0912 new average 7 0912 monument 3 measure 7 0938 new average 7 0938 The information in this section is provided to assist advanced users in resolving particular adjustment problems with the scanning system These adjustments should not be required to be made in the normal course of scanning operations January 2009 Deskan v7 1 3 19 Scanning Removing Monument Widths This command allows for the removal of monument width calibration for strips 2 and higher Strip 1 cannot be removed as it is required as a default On selecting the command Scan Utilities Remove Monument Widths you are prompted to enter the strip number to be removed From this two reports will be issued advising that the widths have been successfully removed If a problem exists w
172. o used as a measure of the number of colours that can be stored A monochrome image has one bit per pixel which means it can only store two colours A bit depth of 8 means each pixel can be one of 256 possible colours and used 8 bits 8 bits is 1 byte Buffer A temporary storage place in which Deskan Express stores image data It is not the same as the standard Windows Clipboard Click Quickly press and release a mouse button by default the LEFT while cursor is positioned on a screen object e g a button Control Cross shaped marks imprinted on the Crosses scanning base and used by the scanning software to align scanned strips for joining Control points Positions identified in the image that have known real world coordinates Cut A raster editing operation used to remove an element from the layer being edited and transferred either to a storage buffer the target layer or a file Cross A generic name for Control Crosses and tick marks Dongle A security device which needs to be connected to the printer port in order for the software product to work Drawing This is the colour that will be used when Colour drawing into the layer Every layer contains its own drawing colour Element This term refers to distinguishable objects in an image for example a line of pixels is a Line element Free raster file A raster file which is not part of any Deskan Express document and has a standard raster file exte
173. of the left button will select that colour as the transparent colour for the active layer To toggle the drawing Mode To switch the drawing tools between using the drawing colour and the background colour use the menu option Tools Drawing Mode The sub menu will pop up and offer a choice between Foreground and Background The currently active mode is identified by an adjacent tick Size The size of drawing tools can be altered so that lines and outline shapes can have varying line widths At negative zoom levels the freehand drawing tool and eraser sizes used may vary from the selected sizes For example at a zoom level of 8 each screen pixel represents a block of eight by eight image pixels The minimum available linewidth at that zoom level is therefore 8 data pixels which equals one screen pixel in width If the currently selected size is not available at the current zoom level the nearest available size is used and appears in the status bar in the second field from the right with an asterisk to alert you to its not using the exact size you selected The exact size will resume when the zoom level permits At positive zoom levels magnified the apparent size of the tool increases to match the larger on screen pixel display size With the other drawing tools apart from freehand draw and erase the selected size is always available however the positioning of the points becomes generalized at negative zoom levels If a tool is
174. on the second strip and so on M Except for the bottom position the scanner should always be positioned so that it sits behind the small indicator holes in the right hand side of the scanning guide oe If the scanner is not positioned correctly the resulting scan may not be able to detect the correct starting position or a scanned strip may not be able to be kept Using the scanner in Deskan v7 1 Deskan v7 1 has been designed to minimize the need to handle the scanner during the scanning of a document Typically the scanner is placed at the bottom of the Scanning Guide on the left strip to start and for each subsequent strip the guide is simply moved right one strip taking the scanner with it Each time a strip is to be scanned a dialog will display a description of where the scanner is to be positioned This is also accompanied by a graphic representation of the correct starting position When the scanner is in the correct starting position either press the OK button or press the black button on the top of the scanner Deskan Ea Scanning shig 1 Pastior seanna al baltam af Guide then DK tocchi ria Figure 3 3 Scanner positioning dialog Scan Documents Throughout this chapter reference is made to a Scan Document This is a special Deskan Express document RCF amp associated files which is used to track the process of scanning and joining A Scan Document is a Deskan Express document which is specially marked
175. one of these operations you are offered the chance to save the modifications to disk so that it can be reloaded if required If there are unsaved modifications to the document a checkbox titled Save Layers before binding is provided in the dialog If present the checkbox always appears already checked If it is left checked and you choose to continue a pick list of modified layers is presented to select which layers will be saved before the simple transformation If it is unchecked the document will not be saved prior to the transformation This means that if an error occurs during the simple transformations then these modifications will be lost The Edit Reload option becomes available which can restore the document to the state it was last saved in prior to being bound Unbinding To unbind a document you must either reload the document from disk using Edit Reload or save all the layers using File Save Scaling Scaling is the process of redrawing a raster image so that the number of pixels in the height and or width of the image is changed by a certain amount known as the scaling factor As an example if an image is scaled by a common factor of 2 then both the height and the width of the image are increased to contain twice as many pixels Each pixel in the original image is mapped onto a block of 2 by 2 pixels in the new image thus the number of pixels in the image is increased by 4 Scaling can be differential affe
176. ontains for example the Edit toolbar invokes raster editing functions January 2009 Deskan v7 1 2 3 Fundamentals Toolbars can be displayed or hidden using the View Toolbars Toolbars Selection dialog They can also be dragged around the Application window with the mouse by grasping them by the edge and docked onto the frame of the main window by running the toolbar onto the frame By grasping the side or bottom of the toolbar it is also possible to adjust the toolbars dimensions Windows and Views Deskan v7 1 has a main Application window which contains all other sub windows Some sub windows are dialog boxes while others contain a portion of an image These image windows are known as views Deskan v7 1 can maintain multiple views of a document up to a limit of 10 views per document It can also operate with multiple image files documents The current view is the window which has the input focus recognized by its highlighted title bar Each view window in Deskan v7 1 has a title bar containing the document name and the current active layer name and if multiple views are open the view number in the format Document name Layer name view number The view number field is visible only if multiple views on the same document are open Documents and layers will be treated in some depth in later sections of this manual A view can be made current by clicking on it with the left mouse button or
177. onument widths 5 Inthe dialog titled Enter Strip Number 1 7 enter the strip number to be calibrated Remember that they are numbered from 1 on the left up to either 4 or 7 on the right 6 The next dialog requests confirmation to Continue on Deviation Errors This refers to the errors that occur during a keep where the scanner has been detected as having been impeded If you answer Yes and this January 2009 Deskan v7 1 3 18 Scanning occurs the strip will be discarded and rescanned If you answer No the problem will be reported and the process cancelled Errors where crosses are not located will always cause the process to stop 7 When the dialog prompting you to position the scanner is displayed check the scanner is properly positioned then press OK 8 Once selected the following dialog will be displayed showing the current progress Measuring for strip identifies which strip is being calibrated Minimum scans allowed indicates the minimum number of scans that must be done and accepted Number of scans held indicates the number of scans that have been accepted Current Maximum error gets the accuracy of the information held 9 Once sufficient information is captured a final dialog is displayed with the results Selecting Yes will add this information to the grid calibration file Figure 3 10 Monument width calibration report Important Points It is possible t
178. or vertical axis so for example File Flip Horizontal flips all the data about the horizontal axis Although flipping does not change the extents of the layers binding still occurs because the sense is changed To flip the image about its horizontal or vertical axis 1 Select the File Flip Horizontal or Vertical menu options 2 If there have been unsaved modifications to the document the Save layers before binding checkbox appears in the warning dialog If you do not wish to select layers for saving prior to the operation uncheck the checkbox If new layers exist within the document the checkbox is not displayed and a message identifying that new layers exist and will be saved is displayed Press Continue Cancel will abort the whole flip process 3 Select any layers for saving from the Save Layers before Binding dialog if desired Click Continue to start the flip process Cancel will abort the whole process January 2009 Deskan v7 1 4 24 Image Editing Undo Undo reverses the last action To enable the Undo Redo facility the checkable menu option Edit Undo On Off must be checked You can undo the last six actions by clicking Edit Undo or pressing Ctrl Z six times When there is nothing that can be undone this menu option is greyed out Each loaded document has an Undo buffer in which the last 6 edit operations done to that document are remembered
179. ords 24 bit Colour No Palette in red If this is not the case ensure that the active layer is 24_bit_colour Change the active layer to monochrome using the layer toolbar and you will see the words monochrome and a rectangle all in black Change the active layer to 8_bit_Colour and you will see the words 8 bit colour With Palette and an inclined rectangle all in purple Even though all the layers are open only the layer on top the Active layer can be seen This is because the transparency is switched off Switch the transparency on using Colour Transparency You can now see the text and shapes from all the layers This is because the white background is being treated as transparent and allowing you to see through it You will also notice that you can see all of the purple inclined rectangle all of the black rectangle except were it is covered by the purple inclined rectangle and the red circle only where it is not covered by the others This is because the 8_bit_colour is the active layer on top which is above the 1_bit_monochrome which is above 24_bit_colour If you were to open the View Settings dialog you would see this order is reflected in the list box Change the background appearance to yellow using Colour Base Colour Select You will see that all the areas where there is no data have changed to yellow Switch transparency off and you will see that the background of the 8_b
180. otated skewed and transformed using a choice of geometric transformation operators When monochrome layers are involved a special tool can be used that intelligently selects shapes from an image which can then be deleted copied or moved Finally images or components can be printed out to any printer or plotter that is supported by Windows 98 Windows 2000 or Windows XP There is a choice of scaling and justification options that allow for a wide choice of placement options on the final page System requirements Deskan v7 1 can be run under Windows XP or Windows Vista with a Pentium 3 processor Due to the large size of colour files a minimum clock speed of 233 MHz minimum of 712 megabytes of RAM and a minimum free disk space of 1 GB are strongly recommended A CD ROM drive and a mouse trackball or other pointing device compatible with Windows XP or Vista is also required January 2009 Deskan v7 1 1 4 Getting started Installation The installation of Deskan v7 1 is a two step process involving the installation of the Deskan v7 1 Software and the attachment and calibration of the scanner These are all straightforward procedures and should be easily completed in less than 30 minutes Steps for installing Deskan Express v7 1 1 Insert the CD into the CD drive If Autoplay does not start then run the program D deskanSetup exe When the Deskan Express installation appears perform the installation and accept the restart options
181. ove the cursor to a line in the drawing near that pixel position and click the left mouse button once Any pixels connected to the clicked point by bridges of pixels in view are highlighted in red Press f to zoom out and view the extent of the selection Note only the pixels that were in the view are highlighted Click on any black area of the image to confirm the selection and move the highlighted pixels to the target layer The pixels that were red become white the display colour of the Target layer indicating they have been moved to the Drawing layer We will now undo the selection to demonstrate selections with unrestricted extents Select Edit Undo The white pixels become yellow again indicating they have been returned to the Proforma layer Make sure the checkable menu option Tools Do Select In View is unchecked so that selections are no longer restricted to the view January 2005 Deskan Express Color v6 0 B 7 18 19 20 21 22 23 24 25 Tutorials Load the saved location line work again and click once on the line work near 900 1000 Zoom back out and note that a much larger area had been selected Click the right mouse button and note how a highlighting operation can be cancelled Having highlighted a group of pixels it is possible to select other groups using the confirmation click for the first selection This is convenient when selecting many small objects Load the s
182. peated scan and keep to acquire multiple strips Scan Scan Strip Start scanning a strip Scan Keep Strip Try to Keep a scanned strip Scan Join Join scanned strips Scan Discard Strips Discard a scanned strip Scan Utilities Autoscan Monument Widths Adjust the monument width calibration for a given strip Scan Utilities Remove Monument Widths Remove the monument width calibration for a given strip Scan Utilities Set Margins Adjust the scanning margins for the current scanning mode and resolution Scan Utilities Autoscan Margins Automatically adjust the scanning margins for all scanning modes and resolutions January 2009 Deskan v7 1 5 14 Menu Options Window Window New Window This option opens a new window view The new view appears superimposed on the original and becomes the current view Window Cascade Arranges all the open window one on top of the other with only the frames of underlying windows visible Window Tile Horizontal Arranges all the open windows so there is no overlap between them The resulting windows are stacked vertically on top of each other so that they are adjacent along their horizontal axis If more than three windows are open they are tiled in a grid pattern Window Tile Vertical Arranges all the open windows so there is no overlap between them The resulting windows are stacked beside each other so that they are adjacent a
183. pics Figure 6 5 Document merge confirmation When the merge is performed the defined background colour of each document is treated as transparent and the remaining information is merged The data from the master document has precedence The final dimensions of the merged image are the smallest rectangle that will fit around the two documents being merged when they are aligned according to the transformation The area of the merged image which is not covered by either document is set to the background colour of the master document If either or both of the documents being merged contain a fence then only the contents of the fence is considered as source data Also the extents of the fence are used to determine the output size and not the whole image dimensions It can be seen in the centre of the dialog with the group labelled Constrain within Fence that both documents had fences in the above merge Batch processing Deskan v7 1 provides a batch oriented command language which can be used for unattended transformations of multiple images Batch processing commands operate on the entire image Using the Batch Processor The first step is to prepare a Deskan v7 1 batch file containing batch commands using a text editor Use PBA as the filename extension Batch processing can either be started from within Deskan v7 1 by selecting the File Run Batch menu option which is available at startup or by calling Deskan v7 1 witha PBA file
184. pressed The Distance option displays the distance between the cursor and the last point in the image where the left button was pressed The first point is selected by clicking the left mouse button in the image on a point of interest Position the cursor on the second point of interest and the distance is displayed All the display options can be shown in the following units pixels inches millimetres centimetres and World units To open the ReadOut utility 1 Select the View Toolbars menu option 2 Check the ReadOut checkbox then click OK Graphical Overlays A graphical overlay is an object which appears in the view window but is not actually part of the raster image There are several different kinds of graphical overlays in Deskan Express Fences e Tracking box Control points and markers January 2009 Deskan v7 1 2 7 Fundamentals Fences are drawn by the user and appear as rectangular or polygonal boundaries on the raster image Control points appear as crosses in the image They too are set in place by the user The Tracking box is a feature controlled in the View Settings dialog The display colour of graphical overlays is defined in the Configuration dialog see ee ee p2 26 Figure 2 5 A view containing some different graphic overlays 1 Left Control Point 2 Middle Polygon Fence 3 Right Tracking rectangle The display of control points and markers c
185. rameter of individual layers This can be done by checking or unchecking the Views Current Layer checkbox box in the View Settings dialog and clicking the Accept button For more details on this dialog box see The View Settings dialog p 2 21 One exception is the current active layer The layer designated the current active layer cannot be closed or hidden A layer can only be displayed if it is open loaded into memory but an open layer need not be displayed Opening a document causes one particular layer to be opened and displayed as the current active layer If the document was opened via it s RCF then the last active layer is used Otherwise the status of active layer goes to whichever file was selected in the file opening dialog Any layer other than the current active layer can be closed releasing it from memory and optionally writing the data to a disk file To hide or close the layer that is the current Active layer first make another layer the active layer by highlighting the other layer and clicking on the Set Active button in the View Settings dialog You can then hide or close the layer If a layer is nominated as the target layer it is displayed and can not be hidden by unchecking the Layer checkboxes in the View Settings dialog In addition to the Active and Target layers Deskan v7 1 supports up to 18 other layers All layers apart from the current active layer are initially
186. rance colour in Colours Base Colour Select The layer s background will always match this colour January 2009 Deskan v7 1 4 1 Image Editing To invert selected layers If the document contains only one layer then selecting File Invert Will automatically invert that layer If there is more than one layer then perform the following 1 Select the menu option File Invert In the dialog box which appears a list of currently open layers is presented 2 Select the layers to invert then click on the Invert button January 2009 Deskan v7 1 4 2 Image Editing Colour and Depth Reduction When the active layer is an 8 or 24 bit image the menu option Layer Reduce Colours becomes available This command will reduce the number of colours in the active layer When the command is selected there is a prompt for the number of colours wanted If a number between 8 and 16 inclusive is entered then the resulting image will be a 4 bit image If anumber between 17 and 256 inclusive is entered the result will be an 8 bit image If the active layer is the only layer in the document then a second prompt will be offered to allow for the document s palette to be replaced If this offer is accepted then a palette will be derived for the image and that palette will be merged with the current document palette When this occurs only the selected number of colours are derived and placed in the document s palette As an example le
187. raster drawings may need major alterations such as the deletion of a large area Raster images can be modified by using Colour manipulation Drawing tools Fence operations Layer separation operations Simple Transformations These are discussed individually in the following sections Invert This operation behaves differently depending on the type of layer being inverted If the layer is 4 bit or 8 bit colour then the data is left untouched but the palette for that layer is inverted so that red becomes cyan blue becomes yellow etc Technically what happens is that every intensity definition within the palette is subtracted from 255 For all other layers the data is modified so that for monochrome the background and foreground is swapped with grey scale the intensities are inverted every pixel is replaced by 255 minus itself and for 24 bit colour each colour component is inverted It is generally used only once with monochrome layers to rectify the foreground background colours of an image to suit Deskan v7 1 s convention see Colour Palettes and Transparency p 2 15 An example of this is the scanning of old style blueprints These drawings are white on a blue background and when scanned result in a black on white image which has to be inverted Vv e An important point to remember with monochrome layers is that they can look right but still be inverted The solution to this problem is to check the background appea
188. rdinates and they do not participate in transformations There purpose is to simply associate a number their id with a position within the image They are used for merging documents see Document Merging p 6 10 All the commands to edit move and delete will work on both control points and markers Placing Adding control points Control points may be added to a raster image by selecting the Transform Add Control menu option or its equivalent toolbar icon The cursor assumes the cross shape of a control point It can be moved to the desired position on the image and a control point deposited there by clicking the left mouse button The Raster Control Point Marker dialog box appears immediately prompting the user to accept or modify the default values of the six control point attributes ID January 2005 Deskan Express Colour v6 0 6 2 Advanced Topics weight pixel X pixel Y World X and World Y Usually only the World X and World Y need to be altered as they always default to zero No two control points may have the same ID pixel coordinates or world coordinates If you try to duplicate control point coordinates an error message to the effect that a certain control point is already at the output position will be displayed A simple way of placing a control point at a known pixel position for example 0 0 is to place the control point anywhere on the image and simply edit the pixel X and pixel Y coordinates to the d
189. re maintained All straight lines angles and parallels are preserved Data rectified pe by the transformation lt Original data prior to transformation Figure 6 1 The Helmert Transform The dashed lines extending from the control points indicate the relative positions of the World coordinates of each control point and hence the amount by which each point will be shifted under the transformation To select the Helmert transform 1 Place two or more control points in the image 2 Select the checkable menu option Transform Helmert Affine This is a six parameter transformation that requires a minimum of three control points Affine transformation can rotate an image differentially scale the X and Y axes skew obliquing the axes make them non orthogonal and translate the origin Straight lines and parallels are preserved but angles may not be January 2005 Deskan Express Colour v6 0 6 4 Advanced Topics Data rectified by the transformation data prior to transformation Figure 6 2 The Affine Transform The dashed lines extending from the control points indicate the relative positions of the World coordinates of each control point It can be used in cases where there has been some skewing of the axes but all parallel lines are still parallel To select the Affine transform Place at least three control points in the image They cannot be collinear Select the checkable menu option
190. reate a Raster Control File automatically when a raster file is open The only situation in which a Raster Control File is not kept after a document is closed is when a raster file is opened but no modifications are made and the command File Save has not been specifically called This allows Deskan v7 1 to be used to view various raster files scrolling and zooming around in them and then closing them leaving no unwanted RCF files on the disk What s an ADF A second type of special file used by Deskan v7 1 is a file with the extension adf The extension stands for Auxiliary Data File and the file is used to store ancillary information as required The data within the file is in ASCII format similar to an ini file and Deskan Express uses this form on two occasions The first case is to store fence information when a fence is saved to a file In this case the filename used matches the name used to store the raster information If the file becomes lost or is deleted the stored image can still be pasted back into another document however the dynamic fence used will be a rectangle representing the extents of the image If the file is retained and contains a polygonal fence definition that that fence will be displayed The second case is to store palette information when requested by the command Colour Save Document Palette In this case the file will contain 256 lines with each line representing one colour from the palette A
191. restrictions be careful not to Have the fence defined but the extent restriction off Have the fence hidden when the constraint is on Set both Fence and View restrictions and have no overlap between these areas Have a fence restriction and drag an area outside the fence Selecting Elements B Remember in this version of Deskan v7 1 the selection tool can only be used with monochrome layers Deskan v7 1 allows the user either to select a connected region of pixels by pointing and clicking or by dragging a frame around a region of pixels The process of selecting pixels by pointing uses a form of flood filling so all pixels even indirectly in contact with the selected element will also be selected Selections can be constrained either by a fence or by the current view for more details see Extent Restriction p 4 18 You may need to sever any spurious links between groups of pixels using the raster editing tools before invoking this operation Selecting elements by dragging an area is similar in manner to placing a Box fence except the left mouse button is held down as the rubber band rectangle is stretched around the desired area Releasing the left button selects all pixels in the enclosed area by highlighting them Clicking on the left button accepts the selection clicking the right button cancels the operation January 2009 Deskan v7 1 4 19 Image Editing If the selection is unconstrained it
192. ring the day then joined as a batch process overnight When a document is joined as a batch process it is automatically saved using the default formats Exit The Exit command closes any open documents without saving them and Deskan v7 1 is terminated January 2005 Deskan Express Colour v6 0 6 13 Advanced Topics Example Batch File An example batch file called example pba can be found in the Deskan v7 1 installation directory January 2005 Deskan Express Colour v6 0 6 14 CHAPTER 7 SETTING UP THE DESKAN SCANNER Setting up the DESKAN 6 Scanner Chapter 7 SETTING UP THE DESKAN SCANNER Before You Begin This chapter describes how to set up the DESKAN scanner for use with Deskan v7 1 and also for use with TWAIN compliant graphics applications B The TWAIN interface is an industry standard allowing applications to interface with a variety of scanners This means that TWAIN compliant applications can access the Omron HS600 scanner allowing you to use the scanner with its sheet feeder for small format document scanning in addition to using it with Deskan v7 1 When Deskan v7 1 is installed a TWAIN interface is also installed so that the scanner can also be used by any other applications that are TWAIN compliant The TWAIN interface is also supplied on the CD ROM as a separate installation Whilst Deskan v7 1 does not use the TWAIN interface it does use the files installed with the TWAIN interface e It is recommen
193. rip and all the tick marks down both sides of the guide These will be saved with the image when you Keep each strip referred to as Keep to distinguish from the final saving of the whole sheet image but will be removed when the software joins the strips together Keep Strip After scanning each strip select the Scan Keep Strip menu option or the equivalent icon This saves the image of the strip currently on screen to disk There is no need to give a file name or specify a directory or file format Deskan saves strip images with a predefined file name and format If a strip has been scanned but not yet kept the window title is of the form document_name Strip unchecked After the strip has been kept the title will change to the form document name Strip_ kept January 2009 Deskan v7 1 3 9 Scanning If you look in the working directory you will notice a rcf file with the name you nominated at the beginning plus other files with extensions cx and px where x is a number or a letter Each kept strip results in a cx and px file pair Additional processing may occur for colour reduction colour correction and edge adjustments This is reported on the status bar It is not necessary to scan all strips in the one Deskan v7 1 session As the strip image files and status information are saved on the disk scanning the whole drawing can be spread over several Deskan v7 1 sessions if necessary Simply keep th
194. rrent document is a Deskan Scan Document the list box in the dialog displays some different information pertinent to scanning January 2009 Deskan v7 1 2 25 Fundamentals Figure 2 11 The document information dialog This is in the form of two columns with the left column identifying the scan setting title and the right column displaying the value Only the settings that are relative to the current document are shown The settings described are Scan Height which is a measure of how long the scan is Strips Held is how many strips have been accepted and kept Scanning described what mode is being used as in monochrome grey scale 8 bit colour or 24 bit colour Reduction is displayed only if selected and Reduce to identifies how many colours the image will contain Configuration dialog This dialog box is summoned by selecting the File Set Up menu option It is used for defining the colours of various program components for opening the Quick Key mappings dialog modifying default resolution and Context menu delay and for selecting monochrome display and logging options General Display The group of buttons labelled General Display controls the colour of some general display elements The Border button refers to the client area in a view which is not covered by the actual image due to a large negative zoom level January 2009 Deskan v7 1 2 26 Fundamentals Figure 2 12
195. s OK ok Figure 3 9 Scanner calibration Place the scanner on the calibration cradle shown below The OK button will become enabled Select OK to start the calibration process which will take approximately one minute Note The scanner will go through the 45 second warm up sequence before calibrating Mi It may be necessary to re calibrate the scanner when there is a significant change in the ambient lighting conditions in which the scanner is operating January 2009 Deskan v7 1 3 17 Scanning Monument Width Calibration Introduction Within Deskan Express the distance between pairs of Control Crosses is measured so that adjustments can be made to correct for changes in document thickness A default Monument Control Cross Width Calibration is performed prior to delivery and it is suitable for most scanning sessions Performing additional monument width calibrations can produce better results when scanning thick documents documents of varying thickness or documents that are not completely flat The current monument width settings are contained in the Deskan Express grid or calibration file The contents of the grid file can be viewed by selecting the menu option View Grid File or pressing function key F11 Example contents of a grid calibration file D JOBS DESKAN Calib grd File Format version 1 1 File Serial number AO970601 Measured Monument widths 7 0932
196. s then loaded into memory and displayed If the file you selected in the File Open dialog is one layer of a document opening it will make Deskan v7 1 read the Raster Control File for that document and load up the selected raster file as the active layer If the file you select from the File Open dialog is a raster file which is not part of any document then it is loaded into memory as the active layer of anew document If you try to open a raster file that has the same name as an existing Raster Control File but is not part of that document the open will fail The only way to open it would be to move the raster file to another directory away from the Raster Control File of the same name If you selected a Raster Control File that contains an unfinished Deskan scanning session the new window will be empty and certain Deskan v7 1 menu options will be unavailable You will be able to scan further strips or join existing ones see S p 3 1 January 2009 Deskan v7 1 2 17 Fundamentals If the RCF or any of its associated raster files are read only for example if they are being read from a CD ROM the entire document is read only Any operation which attempts to write back to these files e g File Save Layer Save etc will be unavailable Canceling File opens To cancel a File opening operation while the file is being loaded press the Escape key This may be useful where a large file has been opened by mistake
197. skan v7 1 4 14 Image Editing This option is only available if a Target layer has been defined For a detailed description of how the colours are mapped from the source image to the target image refer to Transferring Data between Layers on page 4 16 Fence cut copy using icons The To target icon L selects the target layer as the destination for a subsequent Copy Fence or Cut Fence i icon click from the Edit toolbar B If no Target layer is defined the To target icon is greyed Also you cannot Paste from Target layer Clear Fence The Edit Clear Fence Inside Outside options immediately remove all data pixels from inside or outside the fence That is they flood the relevant area with the layers currently defined background colour Fill Fence The Edit Fill Fence Inside Outside options immediately flood the area inside or outside the fence with the layers drawing colour obliterating any data that was there Pasting Operations The Paste operations import data into the current raster image either from another raster file or from the buffer When pasting operations are performed Deskan v7 1 uses a temporary fence to identify the extent of the data being pasted The temporary fence used depends on what is available If pasting from a buffer or from a file that has an associated adf file then the original fence is used If pasting from a file that has no associated adf f
198. ssary to defragment the hard drive or add more memory Setting the scanning margins The command Scan Utilities Set Margins allows the scanning margins for the current mode and resolution to be set These margins control how much information from the sides of the scans are removed during the scanning process If too much is removed errors will occur when trying to keep the strip If too little is removed then background information may confuse the cross location mechanisms For best results the margins should be set so that 3 5 mm of image data is available outside of the vertical lines connecting the tick marks Figure 3 7 Setting the scanning margins manually To set the margins use the scan settings dialog to set the mode and resolution required and ensure that the scanner is positioned on the guide at least 2cm down from the top When the command Scan Utilities Set Margins is selected the scanner will automatically scan a 2cm strip showing the full width of the scan On the left and right sides of the image will be two vertical lines The top line shows the current setting and the bottom line represents the new setting A dialog is also displayed for manipulating these margins By selecting Left margin or Right Margin the display is scrolled between the left and right sides Each press of the lt lt move and move gt gt buttons will move the lower margin being displayed to the left or right Once th
199. t Strip Bean Length C Inches Cm n25 360 E Bilghinees lit p Centraal ti AP SoeiUp Soar Down Cancel Figure 3 5 Scanning Test Strips When the dialog is displayed set the length of the test scan by choosing the units then entering a length The Brightness can be adjusted if necessary and a test scan can be started by pressing Scan Up to scan the required length back up the guide or Scan Down to scan that distance down the guide Any change to the Brightness will be retained for the scanning of whole strips For grey level and colour scans unsatisfactory results can only be improved by changing the resolution or re calibrating the scanner You may need to repeat the test scans several times to arrive at suitable settings for a document of poor quality or until experience is gained January 2009 Deskan v7 1 3 8 Scanning Mv For scanning the old white on blue blueprints you would need to use Deskan Express s File Invert command subsequently to reverse the image tonality as Deskan would generate an image with the background being the data However this must not be done until after you have joined the strips You can check the settings on selected critical areas if you like by starting the scanner at manually positioned locations and scanning test strips Scanning a strip When satisfactory test scans are obtained there are two options for scanning a document For manual scanning follow the
200. t selected point and centred on the second point now extends clockwise to a point on the line extending radially from the centre point to the current cursor position Move the cursor to place the end of the arc in the required position Click the left mouse button to fix the arc in place Click the right button twice to free the cursor of the dynamic arc The right mouse button can be used at any stage to reset to the previous state as described in the status bar a Oy Ol January 2009 Deskan v7 1 4 9 Image Editing Stamp Tool When Stamp tool is on it records the next drawing action other than freehand Draw and Erase and allows the drawn object to be stamped repeatedly at many locations with each left mouse click This continues until the Stamp tool is turned off As soon as the object is drawn whether a line rectangle or whatever the cursor jumps to its centre which becomes the handle or link point for positioning the object for stamping Clicking the left mouse button stamps the object at the current cursor location The first right button click is used for repositioning the link point You can change the link point by clicking the right button moving the cursor to a new link point and then clicking the left button to reattach not necessarily within the object Each right click after that steps backwards through the shape drawing sequence so that the shape of the next stamped object can be altered In a
201. t us say that 8 colours were selected The active layer would be reduced to a 4 bit layer containing only 8 different pixels values The palette entries describing these pixel values will be placed in the document palette as the first 8 entries Of all the original entries in the document palette the 8 entries that were the closest match to the new entries will be discarded If the offer to replace the document palette is not accepted the same 4 bit layer would be produced but the colour representation will be the closest found in the existing document palette If the active layer is already an 8 bit layer and the number of colours selected is greater than the number of colours that exist then the image will not be changed Should the results be unsatisfactory then the command Edit Reload can be used to reload the original image e The Edit Reload command is only available if the layer exists as a file on disk As an example if a 24 bit image has just been scanned and joined but not saved then the command is unavailable e The Edit Reload command does not undo any changes to the document palette Colour Manipulation Colour manipulation refers to both modifications to the palettes and modifications to the colour references for pixels As described in Colour Palettes and Transparency p 2 15 a document contains at least a document palette with 256 entries and possibly additional palettes of varying sizes for some layers
202. t will fit on one page Fit To Page Above the buttons is a small group labelled Justification Initially all the checkboxes will be blank meaning that the output will be centred on the page By checking the checkbox labelled Left the output will be printed on the left side of the page Similarly checking the checkbox labelled Top the output will be at the top of the page This means that combinations can be used to establish three points of justification both across and down the page The remaining two groups are provided for scale control but they are mutually exclusive as one uses the image as a reference and the other uses an established transformation The required one can be activated by selecting World Units or Paper Units with a single mouse click January 2009 Deskan v7 1 2 31 Fundamentals When Paper Units is selected the scaling is performed as a simple enlargement reduction Simply select the direction of scaling then enter the amount For example to enlarge the output by two select Enlarge and then enter the value 2 into the scaling entry box If you did this you would notice that the values in the output column of the dimensions group would be double the values in the Source column Figure 2 16 The Page Setup dialog using world units The World Units group is only available when a transformation has been established see ADVANCED TOPICS p 6 1 If the transformation is available the output scale can be referenced usi
203. tant to ensure that the strips are scanned in sequence left to right and that no strip is missed or duplicated The Scan Settings Deskan settings dialog shows the number of strips already scanned and kept Autoscan An alternative to scanning each strip individually is to use the Autoscan command This starts a scan in the same way as simply scanning a strip but when the strip is obtained it is automatically kept When the keep succeeds you are automatically prompted to scan the next strip This process repeats until all the required strips are kept at which time simply press the escape key or select the cancel button In addition Autoscan will also provide audible cues see Sounds p 2 29 for each prompt This means that to scan a document you select the Scan Auto Scan command move to the scanner and position it and press the purple button on the scanner From there continue to act on the cues to move the guide and scanner to the next strip starting the scan using the purple button on the scanner There is no need to return to the computer until the scanning is finished If a problem does arise the process will stop until resolved After this Autoscan can be restarted to continue automatic scanning Adjustments There are several forms of adjustments that can be performed in relation to scanning To check if adjustments are necessary refer to the following check list 1 Perform a test scan in Black White at
204. terpret and output a number of different image file formats The Raster file types supported by Deskan v7 1 are Adobe Photoshop psd Brooktrout format brk CALS raster Type 1 cal with CCITT Group 4 compression Electronic Art s Interchange File Format iff with RLE compression Image Object Content Architecture ica compression formats gt CCITT Group 3 CCITT Group 4 gt IBM MMR JPEG File Interchange Format jpg Macintosh PICT format pct with packbits compression Microsoft Windows Bitmap bmp uncompressed and RLE compression Mixed Object Document Content Architecture mod with compression formats gt CCITT Group 3 CCITT Group 4 gt IBM MMR Multipage PCX format dcx with RLE compression Only the first page is supported NCR ncr with CCITT Group 4 compression PC Paintbrush PCX format pcx Portable Bitmap File Format pbm in both raw and ASCII encoding SGI Image File Format sgi Sun Raster Data Format ras with REL compression Tagged Image File Format tif of various compression formats Uncompressed Requires lots of storage space Packbits Fastest to load and save Group III Higher compression ratio Group IV Very high compression rates but slower to load save gt Huffman gt JPEG e Truevision Targa tga Windows Clipboard clp uncompressed Windows Metafile wmf What s a Layer Deskan v7 1 supports multi layer raster im
205. the handle by about ten centimeters and then sliding along the guide rail to the desired location This guide acts as the rail along which the scanner runs Control Crosses Ensure that four Control Crosses on the Scanning Base are visible through the corners of the transparent window of the Scanning Guide Notice that the Scanning Guide has a series of markers running down both sides of the transparent window These marks are called Ticks or Tick Marks and they provide a calibration system for the scanning process Carriage assembly Note Prior to using the scanner for the first time and before attaching the scanner to the carriage make sure the scanner has been calibrated in it s calibration cradle January 2009 Deskan v7 1 3 2 Scanning The scanner is supplied with the scanner catch attached to the scanner You will find it on the underside of the scanner The scanner catch bolts to the main housing of the scanner with 2 x M3 pan head bolts Screw the two small fixing bolts into the threaded holes in the scanner base Tighten the bolts so they are finger tight The scanner will need to be aligned parallel with the ticks on the glass panel before the bolts are fully tightened Turn the scanner back to the upright position and attach the scanner catch to the carriage by sliding the L pin through the holes from the rear Once attached align the long edge of the scanner so it is parallel to the ticks Gently remove scanner from carr
206. the Scan Scan Test Strip Scan Test Strip dialog January 2009 Deskan v7 1 3 7 Scanning In the case of monochrome images the input to the scanner is the shade of grey from the image while the output are the pixel levels which can only have values of 0 or 1 Deskan v7 1 always treats the 0 s as the data The Brightness is set to control the capture of data Any grey level below this Brightness grey level gives rise to data pixels and anything above results in background pixels Increasing the Brightness raises the Brightness grey level making more of the pixels become data pixels Once set satisfactorily for white paper it usually only needs changing for coloured paper or prints that have a dark or dirty background A good starting point is 47 Brightness about midway as the valid range is from 1 to 100 On subsequent uses the settings established at installation will be used as initial settings and will only need varying to suit different types of original such as coloured lines dark dyeline print background etc Mi Note The scanning Brightness level must be set at a level where the ticks and control crosses are clearly distingiuished from the background Test scanning Deskan Express allows you to experiment with different Brightness settings by scanning test scans To test the Brightness position the scanner on the guide then select the Scan Scan Test Strip menu option Scam Tes
207. the current image is correct then the command File Modify Resolution Convert should be used This command uses the scaling capability to re sample the image as if it had been scanned at a different resolution and at the same time it replaces the resolution with the new value As an example if an image was 1000 pixels wide and it had a resolution of 400 dpi then entering the command File Resolution Convert and entering the new resolution as 200 would result in an image 500 pixels wide and a resolution of 200 It must be emphasized that no averaging or interpolation is used for this process so it should only be used when necessary and the results treated accordingly Also as the conversion changes the documents dimensions it will become bound as part of the process Rotation A raster image can be rotated about its centre by any angle using the File Rotate menu option The angles 90 180 and 270 form predefined sub options while other angles can be specified using the dialog box under the File Rotate Angle option In all cases a positive angle identifies a rotation on the anti clockwise direction To rotate an image by either 90 180 or 270 degrees 1 Select the File Rotate menu option 2 Select the required sub option 90 deg 180 deg or 270 deg January 2009 Deskan v7 1 Image Editing 3 If there have been unsaved modifications to the document the Save layers before binding checkbox appears in the warning dialog I
208. the image will have been centred on the problem area and a highlighted box will show where the control information was expected to be found In addition the display of the control marks is switched on showing the locations of the crosses which were found The crosses are looked for in the order Tick marks from bottom to top on the left side Tick marks from bottom to top on the right side Top left Control Cross 1 2 3 4 Top right Control Cross 5 Bottom left Control Cross and 6 Bottom right Control Cross Control Location Variables On executing the Scan Keep command the program s first task is to locate the two vertical lines that form the tick marks This process relies on two stored measurements which are dependent on the particular scanner being used When either of these is incorrect the keep operation may fail with the error message Could not identify vertical tick lines To rectify the problem use the command Scan Utilities Autoscan Margins to recalculate these two measurements as well as the scanning margins M Whenever the scanner head is changed the command Scan Utilities Autoscan Margins should be used Line Quality Before detailing each error message we must first understand the term line quality as it is used in describing many of the errors The Control Crosses and tick marks are all fundamentally black on a white background and each is made up of four arms that are right angles to each oth
209. tly at the correct spacing and then fits the strip into its correct location removing the calibration marks as it does so January 2009 Deskan v7 1 3 10 Scanning The Join operation may take considerable time for large high resolution drawings as the software does much checking and geometrical correction to guarantee overall accuracy For very large scanning jobs it may be preferable to allow the join to be performed while the PC is unattended see Join p 6 13 Save Joined Image Once the Join operation finishes a Save Layers dialog is presented Adjust the output raster format if necessary then simply click on the Save button and all the data is saved into a single raster image file with the proper file format extension All the intermediate cx and px files are erased and the document becomes a normal Deskan Express document The image still in memory can be processed by Deskan v7 1 without having to reload it from the file In fact you could use any of Deskan Express s raster editing before saving but it is wise to save it first Effective Y Resolution It has been determined that when scanning in grey scale or colour at higher resolutions some computers do not have sufficient performance to obtain the selected resolution in the vertical direction Despite this the methods employed in merging the strips will still produce an accurate image and in most cases no difference can been seen The problem can be
210. trols the display of certain graphical overlays and layers Can also be opened using the Settings option of the Right mouse button context menu View Toolbars Summons a dialog which allows you to select which toolbars will be visible View Status Bar Toggles the display of the status bar fed View Control Toggles the display of control points and markers in the image View Log File Displays the log file using notepad View Grid File Displays the grid file contents using Notepad Layer E Layer New Blank Add a new empty layer to the document Layer New Import Create a new layer in the document and import a copy of a raster file into the new layer January 2009 Deskan v7 1 5 7 Menu Options E Layer Open A currently closed layer of the current document is loaded from its disk file into memory if Layer Swap Swaps the Active and Target layers L Layer Save Immediately saves the active layer back to its raster file E Layer Export Creates a single raster file from a copy of the current active layer L Layer Close Release individual layers from memory Ki Layer Remove Selected layers are disassociated from the document and their files are erased from disk Layer Reduce Colours Reduces the colour depth of a 24 bit layer to a palletized 4 bit or 8 bit layer It will also reduce an 8 bit layer to a 4 bit layer or reduce the number of colours in a 4 bit or 8 b
211. ure 7 3 Twain scanner calibration No oUF PY Using the Scanner Sheet Fed Mode The scanner needs to be fully assembled Refer to Assembling the Scanner Insert the document into the ADF or into the front of the scanner see Figure 7 4 Sheet fed scanning making sure that the document is centred If scanning via the ADF adjust the paper guides on the ADF Launch a TWAIN compliant application and select the Omron HS600 as Data Source Figure 7 4 Sheet fed scanning January 2005 Deskan Express Colour v6 0 7 3 Setting up the DESKAN 6 Scanner You are now ready to select Acquire and begin scanning You may also wish to extend the paper tray by pulling it up from the top centre Using the Scanner Motorized Mode 1 Launch a TWAIN compliant application 2 Select the Acquire function 3 Detach the scanner head from the scanner Automatic Document Feeder ADF by placing your hand Figure 7 5 Removing the scanner head 4 on top of the scanner with your thumb in the indentation see Figure 7 5 Removing the scanner head Carefully roll the top of the head forward away from the ADF Do not try to lift the scanner straight up it will not detach 5 Place the scanner on the page as shown in the figure Make sure the page lays flat for scanning and the part of the page you want to scan is between the marks on the front of the scanner Be sure you have enough cable for the scanner to move freely
212. wn The menu appears Note the Zoom In Out option is ticked indicating Zoom mode is active Without releasing the button highlight the Zoom In Out option Release the button to select The menu disappears If the menu is summoned again you will notice the tick beside the option is gone indicating Zoom mode is off A third way of toggling the zoom mode is using Deskan v7 1 s Quick Keys facility Quick keys are a fast way of selecting main menu items with a single user defined keystroke A number of frequently used menu items have had Quick keys pre assigned for your convenience one of which is z which invokes the View Zoom In Out option Try pressing z a few times to toggle the zoom mode noting the cursor changing shape if it is inside the current view and the indicator field in the status bar alternately displaying Zoom I O and Ready January 2005 Deskan Express Color v6 0 B 2 17 18 19 20 21 22 23 24 Tutorials Try canceling zoom mode by pressing the escape key The escape key restores a neutral cursor There are two zoom levels which are used frequently enough to warrant their own menu options These are Zoom 1 and Fit A zoom level of one means that one pixel displayed on the screen equals one pixel in the image data Select Views Zoom 1 or the Quick Key 1 The cursor changes to the 4 inward arrows shape Place the cursor on any point in the current view
213. y layer that is not white or covered will be visible and the chance of confusion will be minimized Opening Documents and Layers When you initially start Deskan v7 1 the main menu is limited to three items File View and Help In order to use Deskan Express a working file or document must be opened using the File Open or created using the File New menu options Opening a file The File Open options allows you to select an existing raster file or Raster Control File for input We say that a document is open when its Raster Control File has been read by Deskan v7 1 and its housekeeping information assimilated While a Raster Control File is open in Deskan v7 1 that fact is recorded in the RCF and any attempt to reopen the same file will result in a warning dialog appearing When a document is opened Deskan v7 1 loads the raster file of one of the document s layers into memory so it can be displayed or edited A layer loaded into memory is said to be Open Other layers in the document can be opened later using either the Layer Open or View Settings commands Different layers can be opened and closed released from memory while the document remains open While a document is open at least one of its layers the Active layer is open If a Raster Control File is selected from the File Open dialog its housekeeping information is read by Deskan Express The last active layer in the document i
214. y of the parts January 2009 Deskan v7 1 3 21 Scanning Getting Assistance Occasionally you may need to contact Technical Support to assist you in resolving problems with Scan Keep and or Join operations When this occurs the following guidelines will help you provide Technical Support with all of the necessary information to permit a quick resolution to the problem Technical Support can be contacted via email at digitalimaging theshapemakers com The following information should be provided with any technical support request 1 Deskan Express hardware serial number This number is located on the scanning guide and base 2 The hardware lock dongle serial number This is a 5 digit number on the hardware lock 3 The exact software version number Go to Help About and note the exact version number e g version 6 0 2 12 4 The error message including any error codes reported Files to send for technical support If you are emailing technical support attach the files 1 Deskan60 ini located in your Windows directory typically C Windows 2 Calib grd located in the Deskan Express 6 installation directory typically C Program Files Deskan v7 1 Additionally attach the files described below for the specific problems Scanning and Keeping Errors If you have problems with the Scan or Keep processes select Layer Export and save the data as a standard raster file Send the sav
215. yer of the mechan document Note that the title now contains a number indicating that there are multiple views and providing a means to differentiate them Click inside each view window noting how the title bar becomes highlighted indicating the window has been made the current window ZOOMING We will now use Deskan v7 1 s zoom facility There are a number of ways of enabling and disabling zooming One way is to use the checkable menu option View Zoom In Out from the main menu When this option is checked zoom mode is activated The zoom mode is toggled each time the option is selected The Zoom level of the current view is displayed in the status bar field with a Z in front Notice that when zoom mode is active the cursor assumes the four arrows shape when it is in the current view and the text Zoom I O is displayed in the status bar Make sure the cursor is on the current view and click the left button to zoom further in and the right button to zoom out The portion of the image under the cursor at the time it was zoomed becomes the new centre of the view unless the cursor was too close to the edge of the image Zoom mode can also be toggled by selecting the Zoom In Out option from the context menu see Figure 2 2 p 2 2 The context menu is a small popup menu which appears after a short delay when the right mouse button is held down while the cursor is on the image area Keep the right mouse button do

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