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User`s Manual - WIPE - Applied Coherent Technology

1. CIA static file N A Static data WDB Coastal Outline Custom vector format Same as Source NATO SACLANTC DERA ERS GSST Float flat file WIPE s Internal VFF FNMOC via TEDS N A Simulation TEDS 3Dtemp NetCDF NetCDF NASA via NRL AVIRIS AVIRIS Hyper spectral BIL BIP BIL BIP National Global Data Center NGDC VAP NGDC Global Relief GIF Color Image WIPE s Internal VFF NATO SACLANTC N A Static data Water Land Mask Shapefiles Shapefile format NATO SACLANTC LANDSAT LANDSAT CEOS format WIPE s Internal VFF NATO SACLANTC AVHRR Med AVHRR NetCDF WIPE s Internal VFF NATO SACLANTC SeaWIFS Med SeaWIFS NetCDF WIPE s Internal VFF NATO SACLANTC TOPEX Poseidon Med TOPEX NetCDF NetCDF NATO SACLANTC RADARSAT 1 RADARSAT CEOS WIPE s Internal VFF NATO SACLANTC ERS 2 SAR SAR CEOS WIPE s Internal VFF NATO SACLANTC SeaWIFS SeaWIFS Float flat files WIPE s Internal VFF NATO SACLANTC TOPEX Topex Gridded Float flat file WIPE s Internal VFF Naval Oceanographic Office UNK NAVO Wrecks DBF DBF Naval Oceanographic Office UNK NAVO ACOUSTIC CHAR WIPE s Internal VFF Naval Oceanographic Office P3 OWL NAVO Bathy Float flat file WIPE s Internal VFF Naval Oceanographic Office UNK NAVO Mines DBF DBF Naval Oceanographic Office UNK NAVO Roughness Shapefiles Shapefiles Naval Oceanographic Office N A NAVO Sediments Shapefiles Shapefiles Naval Oceanographic Office SPOT NAVO SPOT GeoTiff WIPE s Internal VFF Naval Oceanographic Office MODEL NAVO Temperature
2. bo gei a rui Figure 3 Screenshot of WIPE Animated Data Viewer Animated Data Viewer Menu Options Menu Item Description Loop Mode Set the continuous looping method used by the Viewer The left button sets looping to start with frame 0 cycle to last frame then start back at frame 0 The right button sets looping to go from frame 0 to last frame then reverse direction back to frame 0 Animate Frames Start and stop frame animation and determine the looping direction for the frames displayed Left and right buttons determine direction center button stops animation Dwell First Left and right buttons decrement and increment the amount of dwell time spent on the first frame in the frame list Dwell Last Left and right buttons decrement and increment the amount of dwell time spent on the last frame in the frame list Adjust Speed Increase and decrease the frame cycle time with the left and right buttons Advance One Advance or Step back in one frame increments with these buttons Frame No Current frame displayed in viewer window Omit Frame Select frames to omit from animation cycle by clicking on checkbox Link to Zip File The hypertext link at the bottom of the Animated Data Viewer starts an on the fly zip file creation process which the user can download to the client machine The zip file contains all the images and an html page needed to view the animation on the clie
3. MINDDIR 20000624 0 Edi 10 Linear 180 180____lesracion palch FN wINDDIR 2000 06 24_ 1 Edit 0 Linear 180 180 extraction_pal chr FN wINDDIR 2000 06 24 2 Edit 0 Linear 180 180 extraction_pal chr FN_WINDDIR 2000 06 24 3 Edit 0 Linear 180 180 extraction_pal chr FN_WINDDIR 2000 06 24 4 Edit 0 Linear 180 180 extraction_pal chr FN wINDDIR 2000 06 24 5 Edit 0 180 180 extraction_pal chr FN WINDDIR 2000 06 24 E L Edit 1 0 Linear 180 180 estraction pal chr FN_WINDDIR 2000 06 24 Edit 0 Linear 180 180 extraction_pal chr FN_WINDDIR 2000 06 24_ 8 Edit 0 Linear 180 180 extraction_pal chr FN_WINDDIR 2000 06 24 9 Edit 0 Linear 180 180 extraction_pal chr FN_WINDDIR 2000 06 24 10 Edit 0 Linear 180 180 extraction_pal chr FN wINDDIR 2000 06 24 11 Edit 0 Linear 180 180 extraction_pal chr FN_WINDDIR 2000 06 24 12 Edit 0 Linear 180 180 extraction_pal chr FN wINDDIR 2000 06 24 13 Edit 0 Linear 180 180 extraction_pal chr FN_WINDDIR 2000 06 24 14 Edit 0 Linear 180 180 extraction_pal chr FN WINDDIR 2000 06 24 15 Edit 0 Linear 180 180 extraction_pal chr FN wINDDIR 2000 06 24 16 Edit 0 Linear 180 180 extraction_pal chr Figure 5 Close up view of the DataSet Control tab in the Image Display Browser Note that the selected DataSet and ID are the same but that the layer val
4. dar gera rekectesd pas pai Hoe chssen s relate mune wiew 8 99 dag fun the prote ip agas d pg reluarea and are Eug E mag gras dferenr rezar over wae Sebect of the following Option CH Pech herz aber obr r Curent Apples Under The Profie Shes wath Comes E Tracks a Prite fom Lari Leet mags C Denia Eefennadon ro a Semon Profile fom 08 2 C Delete Sexton Froli Lat Lii Peguen 18 sl Figure 2 Sample Screen of Session Profile Administratorr Save Session Profile Perform the following steps to save a session profile 1 Click on the Save Current Applet Settings button and type in the name of the profile you wish to save in 2 Click on the Share with pull down menu and select NONE ALL or WIPE ADMIN Note this can be further customized to allow access to certain groups Enter any comments in the Comments message box 4 Click on the SUBMIT button Load and Delete Session Profile Perform the following steps to load a session profile APPLIED COHERENT TECHNOLOGY CORP ACT Image Animation 14 1 Click on the a Profile from List button and select session profile from the pull down list 2 Select the Image Size Factor desired 3 Click on the SUBMIT button To delete a session pr
5. Data Access Rights Security in WIPE is build on TOP of the Windows NT security Each user must have a dedicated login and password In addition to the Windows NT security the WIPE administrator can control e P addresses that can have access to the WIPE server e Data set level user group access For example if a given user belongs to the NATO group then all NATO data will be accessible e WIPE commands that the user can execute in the interpreter engine APPLIED COHERENT TECHNOLOGY CORP ACT HIGH LEVEL SEARCH BROWSER Description of the HLSB Screen The WIPE High Level Search Browser is used to simplify the process of finding data Data is found by specifying constraints in region of interest ROI time of interest and dataset types These constraints are checked against the Meta data records in WIPE The HLSB is the equivalent of a catalog for data available at the particular WIPE server to which the user is connected The following figure shows an example of the High Level Search Browser applet The applet display buttons and menu tabs are explained in the tables below the figure APPLIED COHERENT TECHNOLOGY CORP ACT 10 Dynamic and Static Geo Spatial Databases WIPE High Level Search Browser TOL Start Time yyyy mm dd hh mm ss 1 990 01 07 C vast dev9 E End Time yyyy mm dd hh mm ss 2000 1 2 31 Time of day between 00 00 00
6. lsc Contains the column coordinates for a line segment used in the creation of line and layer plots lsr Contains the row points for a line segment used in the creation of line and layer plots Isx Longitude coordinates for the points in 5 lsr Isy Latitude coordinates for the points in lsc lsr M Institution Name of the institution for which the WIPE server is running and processing data Used to identify the SQL database or databases used by the WIPE server Width Width of the entire applet in pixels Applet Height Height of the entire applet in pixels Image Width Width of the image display screen in pixels Image Height Height of the image display screen in pixels ProfileType Selects which applet type to use HLSB or IDB start_date Starting date and time of interest end_date Ending date and time of interest M_TOD_min Global variable which defines the time to use as the start of a day usually 00 00 00 M_TOD_max Global variable which defines the time to use as the end of a day usually 23 59 59 Time_Delta Defines the number of Time_Delta_Units to search for Time_Delta_Units Defines the time unit used when performing a relative time search Ex hour month day Time_Option Sets method used to determine time of interest in the applet For a 0 value it uses the Start Time and End Time fields i
7. 1 Once a sufficient series of images has been created click on the DATA button in the Tool Bar menu and select PLAY ANIMATED DATA 2 The WIPE Animated Data Viewer will be shown and will immediately start playing the frames within the display screen 3 Press the STOP button under the Animate Frames control to stop the animation 4 Select the looping method The left button sets the Viewer to loop back from the last frame to start from the initial frame right button sets the Viewer to loop back and forth from initial to end frame 5 Select the dwell time time spent paused on the frame for the first and last frames in the frame list Leave at the default setting to have these frames cycle at the same speed as the rest 6 Press the Forward Arrow button under the Animate Frames control to restart the animation 7 There will also be a hypertext link at the bottom of the viewer which allows you to download the viewer and animation to your local machine as a zip file The user may also click on specific frames under the Omit Frame control to remove them from the frame cycle The other controls let the user tune the speed of the animation and conduct a frame by frame cycle A complete listing of the controls and their functions is provided in a table under the HLSB JavaScript Animation section Custom Script Examples This section of the tutorial offers several example situations where the user would benef
8. Because each WIPE server configuration is unique to the institution the example is intended as a general showcase tutorial However the user is welcome to use any part of the code as a building block for custom scripts The two datasets in the example represent bathymetry data collected off the region of North Carolina The DBDB dataset will be considered the baseline data and it would be useful to compare it with the data in the NAVO_Bathy dataset This example steps through one such custom script that performs that comparison The following is the example code entered in the Custom Script window retrieve DBDB data DataSet Layer DBDB DBDB_V1 0 0 bathy getI SDataSet Layer bathy255 bathy scale255 view bathy255 retrieve navo bathymetry data S DataSet Layer NAVO Bathy 3sec onslowQ0 nbathy getI S DataSet Layer nbathy255 nbathy scale255 view nbathy255 The code generates two output arrays containing data from the NAVO Bathy and DBDB datasets It then scales the data values to 0 255 to create two image arrays The output of the image arrays is shown below The output images are bathy255 on the left and nbathy255 on the right The images will be displayed vertically in the actual window in the order of the view commands The custom script can be extended via the code below to compute the percentage error between the two arrays figure containing th
9. The ability to build upon other functions is what gives the user a tremendous power to customize WIPE features and build larger simpler or more detailed functions out of smaller function blocks This APPLIED COHERENT TECHNOLOGY CORP ACT 44 section of the tutorial shows the code contained within the get function to illustrate the building block capability The following code makes up the get function FUNCTION out getI DataSet_Layer GROI Scaling Palette out r image g image b image Wipe Extraction S DataSet Layer M longlat 2d M longlat0 M W M 5 SScaling Palette Note that actual MSHELL syntax would require the parameters in the call to the Wipe_Extraction function to be on the same line but it is separated into several lines for purposes of this example As seen from the code ger is really a simple function which passes the DataSet_Layer variable into a more complicated external function Wipe Extraction Also sets GROI Scaling and Palette to empty strings which tells Wipe_Extraction to use the default settings Suppose the user wants to be able to view a particular dataset out of several selected datasets in the IDB and have more control over the palette used The following function code would serve this purpose Note that for this example the datasets are assumed to have only 1 layer each FUNCTION out getIselected dset paletteused GROI
10. cached when the user presses the zoom and update buttons Navigation Surrounding the Image Display are navigation arrows They allow the user to move the arrows viewing window in the direction indicated by the arrows Data Sets Select any dataset from this list of datasets by clicking on checkbox Then click on the List Update button to view the dataset coverage on the background This list provides a more detailed breakdown of the datasets chosen in the HLSB ex the user selects the IR dataset in the HLSB then the IDB will show a list of IR bands within the IR dataset Layers The data set may be further subdivided into layers e g altitude bands for atmospheric data If so then the layers will be displayed here for selection by the user APPLIED COHERENT TECHNOLOGY CORP ACT 18 Overlays As in the HLSB the Overlays list allows the user to display other information of interest over the datasets in the Image Display Some examples of useful overlays are LatLon grid Magnification Factor shorelines etc IDB Image Display Tabs Display Tab Description Image Image Display Screen Clicking on this tab displays the image mosaic of the currently selected datasets URL Info Displays the variables passed to the ProviewWeb script as well as the script that is called Useful for determining the kind of variables needed to generate a custom script that will generate the same ima
11. via MSEHLL the image processing interpreter language See Built In Interpreter Language MSHELL amp PROVIEW for more detail Options Customized for individual institutions An example option is selecting lan lon format display decimal degrees notation vs hours minutes seconds notation DataSet Control The DataSet Control tab shows a table of parameters being used to control how the data values are displayed in the Image Display Screen IDS These values are set to the defaults when the applet is initialized The default values are specified in the SQL table Data Control The user may then change the values that control the way the data is displayed Any changes are then stored by the applet for the current session These changes are applet specific Thus multiple users may work on the same dataset each using a separate applet and assigning different parameters to the dataset This table will display the parameters for a dataset as soon as the user selects it by clicking on the checkbox in the dataset window However the dataset itself will not be shown until the user hits the Update button This allows configuration of parameters before dataset display APPLIED COHERENT TECHNOLOGY CORP ACT Data Sets on Display FN_WINDDIRI2000 06 24 000000 7 DataSet Control 19
12. wir SScaling SPalette int2str paletteused Sdsetsarray smodify SelDataSets_Layers n Sdatasetwanted Sdatasetsarray dset out r image g image b image Wipe Extraction S SDataSet Layer M longlat 2d M longlat0 M W M H SGROI SScaling Palette The GROI and Scaling variables are once again left as default Palette is set to the value paletteused specified by the user after it has been converted to string format The values for paletteused range from 0 grayscale to 4 user defined color look up table Paletteused could have been made a string variable but then the user would need to put double quotes around the palette number Once the function is entered into the WIPE scripts subdirectory ask the WIPE Server Administrator or consult the WIPE Server Manual for details the user APPLIED COHERENT TECHNOLOGY CORP ACT 45 can call the function using the Custom Script Window as shown the example below mant first dataset in the selected datasets list dset 0 paletteused 2 use pseudocolor palette out getIselected dset paletteused view out WIPE also maintains a series of system variables which are applied to any function being executed An extremely powerful system variable is M echo Typing M echo 1 in the beginning of any custom script sets the output display to echo the commands being executed This is just a brief sample of the MSHELL commands which can be
13. Visualization IDB Animation IDB Animation is the cycling of frames created in the IDB Image Display Viewer The frames are stored separately from the frames in the HLSB and thus can be manipulated and even RESET without affecting the HLSB animation frames Volumetric Visualization through Java Movie Sequence The Volumetric Visualization menu item under the DATA tab in the Toolbar is used to visualize multiple datasets and multiple layers within those datasets covering the same region of interest One method of visualization is via a Java movie sequence The Java movie sequence essentially cycles between the selected datasets and layers that fall within the bounds of the Image Display Screen APPLIED COHERENT TECHNOLOGY CORP ACT 26 Access to Built in Interpreter Language WIPE allows the user access to its internal engine via various custom script menu choices This allows for a highly customizable processing environment user is able to directly enter custom commands via the Custom Script Tab the Image Display Screen for both the HLSB and the IDB Within the IDB the user is also able to enter custom scripts for individual datasets using the Database Control tab and selecting the XROI button The scripts are written in MSHELL the WIPE image processing interpreter language Custom Script Tab in Image Display Screen The Custom Script Tab transforms the IDS into a rudimentary text editor used to enter
14. array oriented data in a form that is self describing and network transparent APPLIED COHERENT TECHNOLOGY CORP ACT 30 Self describing refers to the file containing information about the data it contains Network transparent means that the file is such that it can be accessed by computers with different ways of storing integers characters and floating point numbers Within the WIPE process a NetCDF file can be visualized as a cube of data where the length and width of the cube are the N X M dimensions of the data arrays and the height of the cube is the number of data arrays contained NetCDF variables then can store data such that they contain the same sized arrays N X M and varying numbers of such arrays within the cube This works well when dealing with layered datasets such as atmospheric temperature data which is collected at different altitudes A complete explanation of the NetCDF format can be found at ROI Region of Interest A spatial area of interest defined by using WIPE methodology for selection Rectangular Line and Points Rectangular method specifies an area of interest by clicking and dragging a box on the Image Display Screen Line defines the area by clicking and dragging a line Points allows for ROI definition by clicking at various points on the IDS Universal Time Coordinated UTC Also known as Coordinated Universal Time formerly and widely known as Greenwich Mean Time GMT UTC is
15. dataset from this list of datasets by clicking on checkbox Click on the UPDATE button to view the dataset coverage on the Image Display Screen Data Sets List Change the position of the dataset in the list by clicking on the dataset name to highlight it and click on the up and down arrow buttons The double arrow buttons move the highlighted dataset to the top or bottom of the list Select the optional overlays to be used in the display Some of the normally used Overlays overlays are vector shore lines lat lon grid rivers etc Data Sets Displayed above the image window Provides a summary of the data sets On Display displayed on the image screen Xfactor N A this field does not have useful information in the HLSB V PixelRes Vertical Pixel Resolution Provides the actual vertical screen resolution of a APPLIED COHERENT TECHNOLOGY CORP ACT pixel Reset Click to reset the applet The Image Display Screen will reset to default zoom overlay and background All datasets will be unselected and cleared from image display Update Click to update the display with newly selected datasets overlays ROI and TOI NOTE the update button MUST be clicked to enable any changes in the above items The applet can also be updated using the pop up menu accessed in the image display see Pop Up Menu table below HLSB Image Display Tabs Image Display Tabs Descripti
16. state until it is called by WIPE and is executed whenever the user clicks the UPDATE or ZOOM buttons Also each WIPE applet has its own associated state Thus the state of an IDB and a HLSB will be separate and not interfere with each other or with other IDB and HLSB applets currently being run GROI The Generalized Region Of Interest Defines the regions of an image that satisfy a user defined set of criteria The regions may be spatially separate or even exist as a series of points For example a GROI of an image could be any pixel that is 10 units above the mean pixel intensity value Also referred to as an image blob GROI may be specified by utilizing custom MSHELL scripts Image Plane An arbitrarily defined plane which contains the image information for a specific dataset In the case of datasets with multiple layers each layer selected occupies its own image plane Used in the creation of a volumetric visualization cube or NetCDF file Metadata Data about data It describes how when and by whom a particular set of data was collected and how the data is formatted Used to understand the dataset information stored in WIPE MSHELL A 32 bit interpreted image signal processing language used to generate custom WIPE interfaces MSHELL scripts allow the user to customize the power of existing WIPE processing functions to fulfill his specific needs NetCDF The Network Common Data Form a file format that contains
17. 20 ToolBar Menu Menu Menu Item List Description Preferences Session Profile Admin Functions the same as the Session Profile Admin item in the HLSB See the HLSB ToolBar Menu table for more details Resize Applet Image Functions the same as the Resize Applet Image item in the HLSB See the HLSB ToolBar Menu table for more details Image Geo register Allows the user to affix the dataset image to a geographical feature such as a shoreline Must first select ROI Line and draw a line from the image to the geographical feature before calling this function Get Pixel Values Enables the Image Display Screen to show actual data values for each pixel as the user moves the mouse pointer over the image A small display at the base of the pointer will show the lat lon and pixel values Legend Legend Info Displays information about the ROI selected in the Image Display Screen on a separate window This includes the dataset name overlays used image size and area of interest Overlay Info Shows information about the overlays selected by the user Plot ROI Line Plot Creates a line plot which corresponds to an ROI line drawn on the image display The x axis is the distance along the ROI Line in units corresponding to the dataset and the y axis is the value of the data along the line WIPE will also generate a hypertext link to an ASCII file c
18. And 23 58 53 Preferences TimeSeries Access Info Geo Locator Image n ROI Rectangular N 90 5 80 xFactor N A R R Reset Ww 180 E 180 V PixelRes 78 2698 km 4 Update Background z Data Sets on Display Global Water Land Mask Data Sets 49 J Wind BATHY Cw_SAR DBDB DTED ERIM_SAR_Vessels Overlays Coverage per Pixel LatLong Grid Shoreline Rivers Returned Data Statistics NAVO_Wrecks Status 2000 WIPE Applet 20000616 Corp Figure 1 Sample Screen of High Level Search Browser HLSB Controls Screen Item Description TOI or Time of Interest this block of data is used to specify the window of TOI time to use in the meta data query It allow the user to request an absolute time range or a relative time range e g the last 5 months or 5 hours etc TOI is defined in UTC time more commonly known as GMT Region of Interest to be used in the construction of the spatial query Must be in ROI Rectangular Mode in HLSB The user can either draw a box over the image to specify the ROI or enter the bounding latitude and longitude values B ckeround Click on pull down menu to display the list of available background data sets to use in the image display Available backgrounds depend on the particular WIPE server configuration Select any
19. ELL code The code is located in the MSHELL_SCRIPT attribute attached to the first variable contained in the file Type out text in ProVIEW to view the MSHELL SCRIPT code Generate a 3D Layer Cube 1 Follow steps 1 4 in the Create a NetCDF File method to select the ROI and enter the Volumetric Visualization menu 2 Select Generate a 3D Layer Cube from the menu choices 3 The server will generate a 3D image cube that contains the datasets as images arranged in layers parallel to the top face of the cube Generate a Java Movie Sequence 1 Follow steps 1 4 in the Create a NetCDF File method for the ROI and to enter the Visualization menu 2 Select Generate a Java Movie Sequence from the menu choices APPLIED COHERENT TECHNOLOGY CORP ACT Image Animation 38 3 server will launch the Animated Display Viewer and begin cycling through the different datasets The Animated Display Viewer is a JavaScript application details of the operation are contained in the Image Animation section of the WIPE Tutorial 4 Click on the hypertext link at the bottom of the Viewer to download it to your local machine as a zip file The zip file contains an html file and gif and jpeg images needed to view the animation Most of the Image Animation functions are available in either the HLSB or the IDB The only animation option that is applet specific is the Generate a Java Movie Sequence option in the IDB However th
20. Green indicates a dataset that is time invariant and would therefore be found regardless of the TOI e Black shows no coverage for that dataset at that particular time Dataset Manipulation in the HSLB Make sure at least a portion of the dataset is shown in the IDS before continuing The dataset manipulation in the HLSB is limited to selecting datasets and displaying the coverage areas of those datasets However one can also get more detailed information about the type of APPLIED COHERENT TECHNOLOGY CORP ACT 34 datasets being displayed In addition the HLSB serves as the starting point for data content analysis by starting up the Interactive Data Browser IDB 1 Click on the DATA menu in the HLSB Tool bar A menu list should drop down 2 Select GET METADATA IN BOX This will open a browser window displaying information about the type of dataset shown in the IDS These include date and time file format area covered and size of the dataset image 3 Close the Metadata window Click on the DATA menu again and select GET DATA IN BOX An ITERACTIVE DATA BROWSER applet will be started The IDB will contain the datasets selected in the HLSB This concludes the tutorial on basic HLSB operations The image animation feature is covered in another tutorial as it is common to both the HLSB and IDB Interactive Data Browser Tutorials Interactive Data Browser Basic Operations This tutorial covers basic IDB operations s
21. MSHELL code The user should first select the Output Type This not only determines the output format but also allows for different scripting methodologies For example the output could be unformatted MSHELL output intended for quick problem resolution or output in nicely formatted HTML for use in sharing information WIPE currently supports the following output types e ProVIEW Calculator HTML preformatted used for quick calculations or scripting with minimal output formatting The output is sent to a separate browser window and is contained within default HTML code e HTML Text Using HTML formatting allows for greater customization of output by using HTML code Formatting is done through the use of PRINT statements containing HTML code ie print lt HTML gt lt BODY gt Hello World lt BODY gt lt HTML gt User defined Must specify content type Allows for even greater customization through the use of different content types to display on the web page Some examples are image content type for displaying jpeg output and message content type for email and or download Custom Scripting via DataSet Control Occasionally the user may need to define a region of interest that is not spatially dependent but rather dependent on dataset values Or the user may want to automate the definition of a region of interest such that it can be quickly and easily applied to a dataset Through the Dataset Control tab in t
22. NetCDF NetCDF Naval Research Laboratory MODEL NEMO ORASIS Compressed ORASIS Compressed Naval Research Laboratory N A Simulation TEDS NetCDF via DEI REMOTE ACCESSS NIMA data via NRL N A Static Data DBDB V1 0 NIMA s format WIPE s Internal VFF NIMA data via NRL N A DTED NIMA s format WIPE s Internal VFF NOAA MODEL FNMOC GRIB format NetCDF NOAA RADARSAT 1 amp CW SAR CEOS WIPE s Internal VFF ERS 2 SAR NOAA NOAA Buoy s BUOY Measurements ASCII files SQL Table NOAA GOES GOES IR Flat file WIPE s Internal VFF NOAA GOES GOES 8 Float flat time WIPE s Internal VFF NOAA SSM I SSMI Wind ASCII Table SQL amp Float file with 0 3deg resolution NOAA NOAA 14 15 SST_14Km Float Flat file NetCDF NOAA JHU APL SAR VAP APL_SAR_Wind NetCDF WIPE s Internal VFF NOAA ERIM International N A VAP Derived Ship locations ASCII Table DB Table NRL and NASA Clementine Clementine PDS PDS APPLIED COHERENT TECHNOLOGY CORP ACT Server Side Requirements Server Side Minimum Hardware Requirements The minimum hardware requirement for WIPE is a fully dedicated Windows NT machine 4 0 or higher Hard disk requirement depends on the data ingestion and serving needs Note A high end WIPE system can consist of a network of WIPE servers with terabyte archive storage capabilities Chent Side Minimum Hardware Requirement The minimum hardware requirement on the client side is any computer with a recent version of Netscape or Internet Explorer IE bro
23. R 2 Center the region of interest ROI in the IDS APPLIED COHERENT TECHNOLOGY CORP ACT x3 3 Left click and hold on a starting point in the IDS and drag a rectangular box around the ROI 4 Select the DATA item on the Tool Bar and click on VOLUMETRIC VISUALIZATION 5 Another window will pop up with the visualization choices Select Create a NetCDF file 6 The WIPE server will process the data within the ROI and create a hypertext link to the NetCDF file containing the data 7 Click on the hypertext link to download the file 8 The NetCDF file will have embedded MSHELL code that will unpack the datasets and display them as separate images in ProVIEW Using Proview to View the NetCDF file The NetCDF file format makes it very easy to store different data arrays as variables within a file specify the units and have attributes attached to those variables The file format can be easily visualized as a cube of data where the length and width of the cube are the N X M dimensions of the data arrays and the height of the cube is the number of NetCDF variables in the file This leads to the use of special commands to read and write to the file as well as commands needed to view the attributes attached to the variables themselves To simply view the variables as image files the user just needs to run the following code in ProVIEW out xcodencdf fname where xcodencdf loads the NetCDF file fname and executes the MSH
24. WIPE USER MANUAL HA ACT li Table of Contents APPLIED COHERENT TECHNOLOGY CORP ACT iii APPLIED COHERENT TECHNOLOGY CORP ACT APPLIED COHERENT TECHNOLOGY CORP ACT li PREFACE Who Should Read This Manual The WIPE USER s MANUAL provides an in depth description of the WIPE system and how to use it This manual contains the information needed for an end user of WIPE to view datasets perform analysis and create custom scripts A separate manual for the WIPE administrator provides the information on making changes to the server such as adding or removing users creating custom menus and ingesting new datasets APPLIED COHERENT TECHNOLOGY CORP ACT WIPE OVERVIEW Introduction What is WIPE The WWW Image Processing Environment WIPE is a WEB based Image Processing and Geographical Information System IP GIS that provides network centric manipulation of geo spatial temporal data associated to Earth observing sensors Web based users can interactively produce high level products resulting from the data fusion of recent and historical satellite imagery with other static dynamic data sets WIPE was originally implemented to support the US and NATO s Rapid Environmental Assessment REA exercises during FY96 98 That particular version of WIPE was called the Warfighter Image Processing Environment The present version of WIPE has evolved to support both military and non military c
25. based on an atomic clock to which adjustments of a second leap second are sometimes made to allow for variations in the solar cycle It nominally reflects the mean solar time along the Earth s prime meridian which runs through the Greenwich Observatory outside of London Viewing Window The field of view of the Image Display Screen with respect to the image plane The ZOOM buttons change the field of view The IDS size itself is changed by using the RESIZE APPLET IMAGE menu item APPLIED COHERENT TECHNOLOGY CORP ACT WIPE TUTORIALS Introduction HLSB Tutorials The following tutorials cover the basic operations of WIPE and are intended to enable the user to start processing and analyzing data as quickly as possible The datasets shown in these examples will not necessarily be the same as that in the user s own WIPE server due to the fact that each server is configured to the specific needs of each institution However WIPE offers the same functionality regardless of dataset and the user is encouraged to follow along substituting his own datasets for those in the example High Level Search Browser Basic Operations This tutorial will explain how to select datasets for display in the HLSB zoom in on the datasets manipulate them and change the viewing window Before following the tutorial please make sure of the following e WIPE HLSB is running and user is logged into a WIPE Server with access to at least 1
26. beled according to their classification status unclassified confidential secret top secret Manual Geo referencing Adjustments the user can manually fine tune the registration of an image with respect to known ground control point features e g coastal database or river database Flexible image sizing the user has the ability of interactive zoom in and out and scrolling over an image Data Coverage Maps easy to interpret data availability is overlaid on different Earth Maps Interactive Data Browser IDB Features The IDB provides direct access to the numeric values of the data and products Highlights of the IDB include Generation of Image Mosaics on the Fly the user can specify which images to use for a mosaic generation and establish the overlay order Relational Region of Interests simple interface to locate and or identify pixel locations on one image based on the pixel values of other images APPLIED COHERENT TECHNOLOGY CORP ACT Extensive Visualization Options the user can visualize the data as an image 2d plots 3d plots or video clip Extensive Download Options access is provided to the actual data for user defined regions of interest The data can be downloaded in a number of industry wide formats e g NetCDF float files ASCII files JPEG etc Dynamically generated products most of the products are generated on the fly depending on the user requests Disk Caching system int
27. ces are respectively HTTP CGI and CORBA Building on top of WIPE s CORBA capabilities ACT has been demonstrating the NAVY s Data Exchange Interface DEI CORBA middle ware This has demonstrated access to the NAVY TEDS servers via WIPE APPLIED COHERENT TECHNOLOGY CORP ACT Satellite Data Sources Presently Supported Satellite imaging sensors supported under WIPE are ERS 2 SAR ERS GSST LANDSAT SPOT SeaWIFS RADARSAT TOPEX Poseidon SeaWIFS SSM I and NEMO Examples of static data sets are bathymetry water depth and digital terrain elevation DTED from the National Imagery Mapping Agency and the Naval Oceanographic Office A complete list of supported data sources and data formats is provided on the following page Customization Support An organization can contract ACT to create a custom version of WIPE to add functionality not present in the base system APPLIED COHERENT TECHNOLOGY CORP ACT Supported Data Providers and Respective Data Sets ACT has developed automatic data ingestion modules for many key remote sensing sensor systems and data formats e g ERS 2 SAR NOAA GOES data ERS GSST LANDSAT SPOT SeaWIFS RADARSAT TOPEX Poseidon AVIRIS ArcInfo Shape files text data SQL Tables The following table provides a comprehensive list of all data sources formats presently supported by WIPE
28. d a URL link to a site containing more information about the dataset Wipe Users Manual Opens the Wipe Users Manual in PDF file format ProVIEW Users Manual Opens the ProVIEW users Manual in PDF file format About Displays an overview of WIPE its features and a sample animated gif created by a WIPE module ROI Line Plot APPLIED COHERENT TECHNOLOGY CORP ACT 225 r a m m Cm Wa im am Distance tini The bik below points 22 an ASCO which contens the for the abore ple The Gist ket ii beade bee wath the 4 of rows amp of colin and O The data ii ruina debited mith one xy par par lina Figure 5 Sample Output of PlolROI LINE PLOT The x axis shows the distance from the starting point along the ROI LINE The y axis shows the pixel values along the line The hypertext link allows downloading of plot data to the client computer ROI 3D Plot 45 Figure 6 Sample Output PlotlROI 3D PLOT APPLIED COHERENT TECHNOLOGY CORP ACT 23 Topo Drape 128 tobe ees Figure 7 Sample Output of PlotlTopo Drape option Note the menus at the top that allow for user rotation tilt size scale and topo choice This plot allows for easy identification of the mountain region in the upper left corner as well as the island at the entrance to the harbor Topo Drape Options The topo drape view window also contains se
29. dataset e HLSB is in default view The view should show a world background and have no datasets selected Press the RESET button near the upper right corner of the HLSB if this is not the case Selection of Datasets in HLSB 1 Select a dataset to display by clicking on a checkbox next to one of the available datasets in the DATA SETS list 2 Check the OVERLAY list and make sure the LatLon Grid overlay is selected Click in the checkbox if it is not APPLIED COHERENT TECHNOLOGY CORP ACT Bye Click the UPDATE button The status bar along the lower left edge of the HSLB should show status Updating applet When the applet is done updating the display the status bar should return to Status The Image Display Screen IDS should now show at least one small colored polygon The colored polygon serves to illustrate the dataset coverage The Data Sets on Display bar above the IDS should also show the name of the selected dataset There may be more than one colored polygon depending on the institution If there is no polygon visible then the area covered by the dataset may be smaller and harder to visualize against the background Ensure that the ROI menu tab is showing ROI Rectangular The user will now use the zoom features to zoom in closer to a selected dataset Move the mouse pointer over the left hand corner of a colored polygon then click the left mouse button down and drag it such that a dotted rectangle enclo
30. e animation controls are still the same and can be separated into two types animation through the applet itself or by using the WIPE Animated Data Viewer Applet Based Animation The following are the detailed steps to follow when creating the applet based animation 1 First create the frames to be displayed Frames are the images shown in the Image Display Window They are cached every time the user updates the screen information with the UPDATE button moves the viewing window or zooms the viewing window in or out Caching allows for quicker retrieval when going back and forth between previous and current applet states Right click while in the IDS to bring up the Pop Up Menu Select ITERATE ALL This will place a check in the checkbox and start the animation The display screen should now cycle the frames The frames cycle from first frame to last and loop back to first Once the user is done viewing right click to view the Pop Up Menu and re select ITERATE ALL This will uncheck the menu item and stop the animation Pressing the RESET button will clear the frames from the cache and allow the user to create a new sequence of frames for animation JavaScript Animation A JavaScript viewer is used to display the frames and allow the user finer control of the animation The method used to create the images is the same as the one for applet based animation APPLIED COHERENT TECHNOLOGY CORP ACT 39
31. e is constantly checking for the arrival of data requests from a user The server engine also captures all the different methods to make data available to the remote or local user Highlights of the server engines include Modular Design servers can be configured to access data in other WIPE servers Data Access Restrictions multiple access layer restrictions are built on top of the Windows NT operating system Client Server the data can be accessed from anywhere over the WWW The user has the flexibility to process the data on the server in the client side WIPE s architecture allows transferring portions of the data to the client side and performing sophisticated data analysis in his computer Long term archival Once the hard disk quota is reached the WIPE system administrator can specify what to do with data sets that can be off loaded from the system For users connecting to the server engine via a WEB browser there are two basic JAVA applets that facilitate the interaction the High Level Search Browser HLSB and the Interactive Data Browser IDB High Level Search Browser HLSB Features The HLSB is used to find where data is available as a function of sensor time and spatial location The HLSB provides Spatial Temporal Sensor Queries metadata queries are done using time spatial and sensor constraints via the HLSB simple to use graphical user interface Classification Status of Data products can be la
32. e output image is also shown correct for sign differences bathy bathy abs nbathy nbathy abs define region of bathy with pixel values gt 0 APPLIED COHERENT TECHNOLOGY CORP ACT 43 groi gtindex bathy 0 create error array with same size as bathy error zeros bathy nrows bathy ncols assign error between datasets to valid pixels error groi abs bathy groi nbathy groi bathy groi 100 clip error values above 255 to 255 error gtclipto error 255 255 find region of bathy where pixel values 0 and set the same region in error 0 groi2 egindex bathy 0 error groi2 0 view the error image the percentag rror between the two datasets is shown below view error errot bzcwern tbe ten La chem Eu low error array viewed as an image The large black area is region of no dataset values since it is over land The gray area is the coverage of bathy which is larger than nbathy Note how WIPE is able to display the percent difference between the two data arrays as an image for better visualization of the error In addition since the data for both datasets was already geo referenced to lat lon coordinates WIPE was able to compare two different sized data arrays with a subset region common to both Building Blocks System Variables and Additions to the Applet
33. efined ROI If no ROI is defined a rectangular ROI will be created with corner points at the upper left corner of the image display and the mouse pointer applet will then zoom into the rectangular ROI Zoom Out Zoom out to the next highest scale factor Previous Next WIPE will cache the applet state such that the user can switch back and forth between already created states using the Previous and Next buttons A state is cached when the user presses the zoom update or reset buttons Update Reset Functions the same as the Update and Reset buttons on the HLSB main display Clear ROI Selection Removes a user defined ROI from the Image Display Screen APPLIED COHERENT TECHNOLOGY CORP ACT 13 Iterate All Starts the applet based animation see Image Animation below Go to Full Resolution Displays the selected dataset in full scale resolution xfactor 1 Interaction With Session Profile Administrator The Session Profile Administrator screen allows the user to manage different session profiles These profiles allow the user to save an applet state for later analysis and sharing of information with other users The next figure shows an example Session Profile Administration Window WIPE s Session Profile Administration WEEE were to kep differ gees prof A rennen prole ronan momen apa cazand bx gesgrephical wth asi cauzal 0 aere robo merge
34. elDatasetRegion Layer This should be similar to the format of the datasets shown in the IDB dataset list The difference is layer where layer is the value of the layer of interest Enter 0 if the dataset contains no layers Sdset NAVO_Temperature test1 0 out getI Sdset out255 scale255 out view out255 4 output window should show an image retrieved by the get Image function and scaled from 0 255 via the scale255 function The dset_layer variable specifies the data for get to retrieve Notice how the get function utilizes brackets which is the syntax for external functions versus the parentheses for scale255 internal to ProVIEW 5 The sample output from the above code is shown below Dm j pe p j bas 2 0000 p re ee aa Output of function The function applies a grayscale palette to the data For more customization of the palette and other parameters use the Wipe_Extraction function shown in a later example Wipe Extraction and Analysis Example The get function in the previous example be used as part of larger custom script In this case it will be used to extract two datasets and perform a comparative analysis The example will cover different analytical functions accessed through various ProVIEW commands and APPLIED COHERENT TECHNOLOGY CORP ACT ud is meant to illustrate the customization power available to the user
35. ermediate products are cached for a predetermined amount of time for rapid serving of future requests Extraction of Image features on the fly the analyst end user can dynamically decide which region he wants to process and what type of features algorithms he wants to apply to the data Image Mensuration Latitude and longitude information is dynamically provided to the user as the pointer is moved over the image The user can make distance measurements over arbitrary paths Session Profiles the user can save edit and recall the state of a WIPE server a session profile This is particularly useful to share information with other users Built in Interpreter Language Because WIPE s engine is built on top of ProVIEW it inherits many of ProVIEW s built in capabilities A detailed description of ProVIEW can be obtained from the on line manual at In addition a user in ProVIEW can access the services in WIPE via CORBA and HTTP interfaces Supported Data Types WIPE supports points vectors gridded non gridded volumetric image blobs and N dimensional data Supported Data Formats SQL relational databases Vector Product Format Arc View GIS Shapefiles NetCDF CEOS ASCII Tables and Planetary Data System PDS NASA formats See table following this section for additional information Middleware Used WIPE can be accessed from a WWW browser running the WIPE applet or from a stand alone application The middleware interfa
36. ers depending upon the data format It is often valuable to the user to be able to view different datasets for one particular region WIPE contains different methods of viewing data in this manner using the Volumetric Visualization menu item located under the DATA tab in the IDB toolbar Visualization Method Description Create a NetCDF file Creates a NetCDF file and a hyperlink to the file to be downloaded See Tutorial for more details on the NetCDF file option Cube Generate a 3D Layer Creates a 3D image cube which contains the datasets as images arranged in layers parallel to the top face of the cube See figure below for example output Sequence Generate a Java Movie Creates a separate frame for each image layer and opens the Animated Display Viewer to cycle through each frame Data Visualization and Formatting For Download APPLIED COHERENT TECHNOLOGY CORP ACT 25 Figure 8 Sample output of Data Volumetric Visualization Generate 3d layer cube This visualization option allows for simultaneous viewing of the same region from different sensor datasets Overlaying Options on Image Screen Image Animations Image animations in the IDB are created in the same manner as in the High Level Search Browser The two animation options are applet based and JavaScript based There are two different display modes that utilize the javascript viewer IDB animation and Volumetric
37. ewing multiple image planes in the same volumetric space See Volumetric Visualization Methods for more detail Info Storage Statistics Shows how much data has been processed over certain periods of time last hour last 24 hours total as well as how much data is currently being processed by the WIPE server Usage Statistics Displays access statistics such as number of times accessed number of files downloaded and number of pages viewed Animation Play Animated Data Opens the Animated Data Viewer which starts playing stored frames of the Image Display Screen The stored frames are specific to the IDB and will not impact the frames stored for the HLSB Otherwise the instructions for creating an animation are the same as in the HLSB Image Animation section Execute Edge Detection Displays results of a script that tries to detect edges of an image as defined by sharp contrast differences METOC Data Probe for Points Selected Generates a plot of meterological conditions at user selected points on the image Requires that the WIPE server have access to meteorological data Flight Path Profile Generates plots of meterological conditions along a flight path traced by the user across the image Requires the WIPE server to have access to meteorological data Help DataSets Info Opens an HTML table which lists the available datasets a brief description of each dataset an
38. ge as that currently displayed in the Image tab See the Wipe Server Manual for more information about the commonly used WIPE variables Server Messages Shows the status messages returned by the WIPE server after it has finished processing commands generated by the WIPE applet These commands could be the generation of an image mosaic javaviewer animation or plot function The status messages are useful for tracking down any errors encountered in processing and to verify the list of selected datasets NOTE The status messages are specific to the current applet For example updating the display in the HLSB would not update the trace list in the IDB Also two IDB applets would have their own separate list of server messages Dataset Control Shows a listing of the currently selected datasets and various parameters See figure for Dataset Control Also allows the user to customize the region of interest of each individual dataset via the MSHELL scripting language From the list of currently selected datasets the user can click on the EDIT button under XROI to bring up a mini console screen display Within the display the user can click on EXAMPLE CODE to examine a sample script type in a script of their own and click OK to enable the script or cancel to exit out of the mini console The user must then click UPDATE in the IDB to execute the script Custom Script Allows the user to build and execute a custom script for execution
39. he Image Animation section for further detail on how to use the Viewer Geo Locator Country Select a country to view in the Image Display Screen State Province Select a State or Province to view in the Image Display Screen City Select a city to view in the Image Display Screen Image Get Pixel Values Not applicable to the HLSB menu choice is grayed out Help About Displays an overview of WIPE in PDF file format A PDF reader such as Acrobat Reader 4 0 is needed DataSets Info Opens a separate browser which lists the available datasets gives a brief description of them and links to web sites which can provide more information Wipe User Manual Displays the Wipe User s Manual This requires Adobe Acrobat Reader or Adobe Acrobat 4 0 or higher to read the PDF file ProviewUser Manual Displays Proview User s Manual This requires Adobe Acrobat Reader or Adobe Acrobat 4 0 or higher to read the PDF file Pop Up Menu Right click while the pointer is on the image display screen in order to bring up a pop up menu This allows for greater flexibility in interacting with the image Close by left clicking outside of the menu Menu Item Description Center on Point Dbl Click Centers the Image Display window on the mouse pointer Double clicking the Image Display Screen performs the same function Zoom Zooms into the user d
40. he IDB display the user can edit the XROI of a particular dataset and enter custom MSHELL scripts Common WIPE applet variables The following table shows the more common WIPE variables a user can manipulate via custom scripts Variable Description APPLIED COHERENT TECHNOLOGY CORP ACT Center longitude as calculated by the following formula CenterLong str2float Ax1 CenterLong str2float Ax2 str2float Ax 2 M longlatO Global variable which contains the corners of the world in lat lon coordinates in a rectangular ROI going from upper left upper right lower right lower left UL UR LR LL M_longlat Global variable which defines the corner boundaries of the image display in lat lon coordinates going from UL UR LR LL M_longlat_2d Global variable which defines the corner boundaries of the rectangular ROI defined by the user in the image display in lat lon coordinates Absolute difference degrees between the two longitude lines that define the sides of the image LongDif display Global variable which defines the image display size height pixels be changed by selecting Resize Applet Image in applet menu bar M_W Global variable which defines the image display size width in pixels can be changed by selecting Resize Applet Image in the applet menu bar ipaddr The IP add
41. he IDS 2 Click and hold the left mouse button down on a starting point in the display and drag a rectangular box across the image This will define the region from which data values will be extracted to form the plot 3 Click on PLOT in the IDB Tool Bar then ROI 3D PLOT A window containing the 3D plot will be created LAYER PLOT LAYER PLOT is used in instances where the dataset is composed of many layers such as a dataset consisting of ocean temperature collected APPLIED COHERENT TECHNOLOGY CORP ACT 36 at different depths WIPE will issue a warning message if this plotting method is used on a dataset containing only 1 layer Layer Plot can be done using the LINE and POINTS ROI In LINE ROI mode LAYER PLOT shows a plot of data values along a user defined line for each layer selected In POINTS ROI mode LAYER PLOT shows a plot of data values at each layer for each of the selected points 1 Select ROI LINE or ROI POINTS from the ROI pull down menu Center the dataset within the IDS 2 Select the layers of interest from the Layer list Hold down the SHIFT key and left click to select consecutive layers or hold down the CNTRL key and left click to pick specific layers 3 Click and hold the left mouse button down to drag a line across the image or click at several points on the image depending on whether ROI LINE or ROI POINTS is selected 4 Click on PLOT in the Tool Bar menu and select LAYER PLOT A window conta
42. hown below print Hello World x randu 1 10 y sin x plot y 4 Click on the EXECUTE button at the bottom of the Custom Script window Another window should open with the results of the script execution such as the figure shown below ETAT 5 The window should show a very familiar example output Hello World and a sine plot of 10 random points The print command is a standard command for outputting text and text strings to the screen The ProVIEW random number generator randu is told to generate a 1 X 10 row vector of random numbers The sine function is called by sin Basic WIPE Extraction Example This example illustrates the use of custom scripting to view datasets without using the applet controls The example can be extended to automate the viewing of several dataset images and to analyze several images using ProVIEW commands This example assumes the user already running the Interactive Data Browser containing at least 1 dataset in the dataset list If not consult the HLSB tutorial on how to select a dataset and run IDB APPLIED COHERENT TECHNOLOGY CORP ACT 41 1 Click on the Custom Script tab in the IDS 2 Select ProVIEW Calculator HTML preformatted lt pre gt for output type 3 Type the following code Substitute your own dataset sensor and layer names according to the following syntax this should be the same syntax used in the IDB dataset list DatasetNam
43. ining the layer plot will be created TOPO DRAPE Topo drape is used in instances where it would be useful to visually reference the data to topological features An example would be to map temperature data in order to visualize terrain dependencies The dataset is geo referenced to internal WIPE databases of terrain elevation and bathymetry data 1 Select ROI RECTANGULAR from the ROI pull down menu Be sure to center the dataset region of interest in the IDS 2 Click an hold the left mouse button down to drag a rectangular box across the image This defines the ROI for the plot 3 Click on PLOT in the Tool Bar menu and select TOPO DRAPE The applet will create a window containing the plot 4 Notice the drop down menu bars along the top of the plot They show the current settings for various options described in Topo Drape Options Change them to suit various needs Volumetric Visualization Guide There are many instances where several datasets may overlap a given region of interest The Interactive Data Browser allows the user to view the different datasets in a volumetric representation where each dataset is displayed as a layer of a 3 D cube This volumetric visualization lets the user quickly evaluate several datasets and see their relationships at the same or nearly the same time Follow the steps below to learn the different visualization methods Create a NetCDF File 1 Click on the ROI selection menu and select RECTANGULA
44. it from writing custom scripts within WIPE to perform operations These custom scripts are written in MSHELL which is the interpreter language used by ProVIEW Thus most of the proVIEW commands are available to the WIPE user This allows for full customization data manipulation and processing through user made custom MSHELL algorithms Note that there are two interfaces where the user can write custom scripts One is the Custom Script tab in the HLSB The other is the Dataset Control tab in the IDB The two initial script examples below assume a familiarity with programming code C C etc The third example assumes more familiarity with ProVIEW commands e Basic code style convention in the examples is 9pt Courier New font for example code and 10 pt Times New Roman italics when referencing or explaining ProVIEW commands Basic Custom Script Example This example is meant to show the process of entering custom scripts into WIPE for execution This will serve as the basis for later more APPLIED COHERENT TECHNOLOGY CORP ACT 40 advanced scripting examples NOTE ProVIEW is case sensitive so commands should be entered exactly as shown in the examples and variables should have the same case throughout the code i e variable x is not the same as 1 Click on the Custom Script tab in the IDS 2 Select Output type ProVIEW Calculator HTML preformatted lt pre gt 3 the following code s
45. mage GROI shown in the image display If it is not specified it defaults to s1 s1 s2 s1 s1 where s2 is the separator between the GROI for each dataset Scaling The scaling factors used for each dataset in DataSet in the creation of the image shown in the image display If it is not specified it defaults to Default s1 s1 with s2 being the separator APPLIED COHERENT TECHNOLOGY CORP ACT 28 between the scaling factors Scaling factors two numbers corresponding to min scale and max scale The palette used for each dataset in DataSet with s2 being the separator between the palettes SPalette The palette choices are the numbers used in the wcolut table defined in the ProVIEW manual Currently set to Default s1 s1 for each dataset in DataSet with s2 being the separator Not ContourControl currently implemented but will be used in a future version to create contour lines as an overlay on the image Column vector where each row shows the layers used in DataSet If the layers are all the same SelLayers then it returns single value Overlays Comma delimited string containing all the overlays used in the creation of the image BackGround Defines which background is used in the creation of the image in the IDS Defines the ROI type currently selected in the applet 0 is line 1 is rectangular and 2 is roitype point ROI
46. n the applet to define the time of interest For a 1 value it searches for data in the last Time Delta amount of Time_Delta_Units Ex Last 24 hours would be Time_Delta 24 Time Delta Units hour runcode IDB Contains the code entered by the user in the Custom Script tab on the IDS as well as supporting code needed to run it and output to a browser window Applet Global variable which sets which applet type to use HLSB IDB Cov_Type Used in various external functions to describe the data currently being processed In the context of the IDB for example it describes the image shown in the IDB as Compiled_Data SelDataSets_Laye Column vector where each row is a string corresponding to the dataset id layer item contained rs DataSets M_Start_Date Global variable defining the start date and time of interest M_End_ Date Global variable defining the end date and time of interest M_Layer Global variable defining the layers being used M_Overlays Global variable defining the overlays used in the image displayed M_H Same as M_H except in string variable format M_W Same as M_W except in string variable format APPLIED COHERENT TECHNOLOGY CORP ACT 29 Glossary of Terms Applet State Refers to the state of the WIPE applet with regard to the selected ROI TOI datasets overlays and layers The applet does not change its
47. nt machine APPLIED COHERENT TECHNOLOGY CORP ACT S162 INTERACTIVE DATA BROWSER Description of the IDB Screen The Interactive Data Browser IDB contains the menu choices and list boxes that allow the user to select in detail the data content that will be displayed on the image display screen analyze the data using various visualization tools IDB screen is very similar to that of the HLSB screen The TOI section is no longer displayed because the user is now concentrating on the data sets that fit within the Time of Interest specified in the HLSB The menu toolbar data set list and other items contain choices that deal more directly with the data sets of interest and tools necessary to process the data It also allows the user to The layout of the APPLIED COHERENT TECHNOLOGY CORP ACT V Dynamic and Static Geo Spatial Databases WIPE Data Browser Preferences Image Legend Plot Download Info Animation Execute METOC Help ROI Rectangular N 30 5 a0 Factor NA R Reset w 180 E iza 7 amp 2698 km 4 gt Update Background E Data Sets on Display WINDDIRI2000 06 24 000000 EROR None 3 1 Data Sets 27 2j j ajr L FN_WINDMAG FN_WINDDIR FN_TEMP FN_WINDMAG Layers 0 10 0 m 24 1 18 0 m 24 2 1013 0 MB 24 3 1000 0 MB 24 4 975 0 MB 24 5 950 0 MB 24 Overlay
48. ofile from the list 1 Click on the Delete a Session Profile button and select the desired profile to delete from the pull down list 2 Click on the SUBMIT button Image Animation refers to the cycling of cached image displays in succession either through the applet itself or through the WIPE Animated Data Viewer WADV The WADV is a custom JavaScript executed by the applet when the user selects certain animation commands When describing the image animation methods the individual images may sometimes be referred to as frames Applet Based Animation Applet based animation in the High Level Search Browser HLSB is done by cycling through a series of cached images or frames and displaying them in the Image Display Screen IDS Please refer to the tutorial at the end of this document for detailed steps on how to create an animation sequence Javascript Animation This method uses the Animated Data Viewer JavaScript viewer for finer control of the animation The method used to create the images is the same as the one for applet based animation Once a sufficient series of images has been created click on the DATA button in the ToolBar Menu and select PLAY ANIMATED DATA This should bring up the WIPE Animated Data Viewer The following page shows an example of the Viewer along with a table describing the different Viewer controls APPLIED COHERENT TECHNOLOGY CORP ACT 15 eo ESS 896 118 Xs 44
49. oice to edit the display properties Width Height of the Applet and Image Display Click SUBMIT to enable changes TimeSeries By Months Displays in tabular format by month the datasets found within a user defined ROI and TOI By Days Same as above with datasets sorted by days By Hours Same as above with datasets sorted by hours Access Get Data in Box Opens the Interactive Data Browser IDB window for more detailed user manipulation of the selected datasets See the IDB section for more detailed explanation of the browser functions APPLIED COHERENT TECHNOLOGY CORP ACT 12 Get Metadata in Box Shows the datasets and content type of the datasets found within the user defined ROI Content information includes Date Time Size of image row by column in pixels File Format approx area covered and bounding box lat long coordinates Info Overlay Info Describes the overlays currently selected in the HLSB screen Storage Statistics Shows how much data has been processed over certain periods of time last hour last 24 hours total as well as how much data is currently being processed by the WIPE server Usage Statistics Displays access statistics such as number of times accessed number of files downloaded and number of pages viewed Animation Play Animated Data Opens a WIPE Animated Data Viewer browser which starts playing stored frames of the Image Display screen See t
50. ommunities WIPE as a Tool for Different Types of Users From a high level the WIPE system provides support for major classes of users associated with the flow of geo spatial temporal data These are the data manager the data provider and the end user accessing one or multiple sources of data Data Manager Perspective WIPE solves the problems of efficiently ingesting archiving serving large data volumes and quickly geo referencing recent and legacy geo spatial temporal data For a data manager WIPE provides a key building block in the implementation of a LAN based geo spatial data warehouse Depending on the specific project constraints it may be optimum to locate the WIPE server s at the e Data provider facility i e a satellite ground station where the data is collected APPLIED COHERENT TECHNOLOGY CORP ACT e Main data fusion center e Regional fusion center or all of the above Data Provider Perspective Once a data provider moves data into a pre established directory the data assimilation engine will automatically pre process geo reference and get the data ready for remote access via the WIPE server engine End User Perspective For the end user WIPE facilitates going all the way from high level searches on the metadata to interactive access and download to the actual data or virtual data products Remote end users can access the server engine via 1 User application that is HTTP CORBA enabled e g P
51. on Image Image Display Screen Shows datasets overlays and background image At zoomed in mode the navigation arrows surrounding the display can be clicked on to move the viewing window Also right clicking while in the image display brings up a pop up menu see Pop Up Menu table below URL Info Displays the separate variables that are passed to the WIPE server via the URL at the top of the screen The variables themselves are described in the WIPE Server Manual This will help in the creation of custom scripts by showing the current values of the more commonly used variables Server messages Displays a time ordered list of command calls made by applet Used primarily to trace errors that may have occurred while running WIPE Options Customized for individual institutions Some examples of options are selecting lat lon format display decimal notation vs hours minutes seconds notation and view centering on specific longitudes HLSB Menu Options Main Menu Menu Item Menu Item List Description Preferences Session Profile Click to access the Session Profile Administrator SPA and the Admin SPA will open in a separate window From the SPA the user can save edit and recall the state of a WIPE server a session profile This allows for easy distribution of information between different users Resize Applet Image Allows the user to Resize Applet Image Click on menu ch
52. ontaining the data used in the plot creation NOTE The user must first select the ROI Line method and click and drag an ROI Line across the image display ROI 3D Plot Creates a 3 dimensional data plot corresponding to a rectangular ROI NOTE The user must first select the ROI Rectangular method and click and drag a rectangular box across the image display Layer Plot Used for multi layered dataset plots At least 2 layers must be selected before clicking this menu item The plots depend on the ROI type selected by the user Rectangular ROI results in one 3 D plot per layer Line ROI results in a line plot for each layer Points ROI returns a single multi line plot Topo Drape The dataset image is mapped to internal digital terrain elevation and bathymetry databases in order to create an image of the data draped over topological features This allows for instant visual referencing of the data to known geographical features Topo Drape can also be customized via several menu options Explained in Topo Drape Options see below Download Flat File Displays a hypertext link to a downloadable file containing the pixel values as shown in the Image Display Screen along with a short description of the file type and a jpeg of the image to be downloaded APPLIED COHERENT TECHNOLOGY CORP ACT Lol Volumetric Visualization Allows the user to choose between different display methods for vi
53. play screen Select the datasets for which the coverage information is desired and click on the update button APPLIED COHERENT TECHNOLOGY CORP ACT 33 4 Now select TimeSeries menu and select either Get Data in Box by Hours or Days or Months depending on the desired time increment The time increment determines how the datasets will be grouped when the results table is formed For example selecting Get Data in Box by Months groups the datasets according to the month in which they were found 5 The results will be shown in another browser window and will be similar to that shown in the example figure below Seo Spatial Databases Results of TimeSeries Query in month increments Table Generated an Tus Agr 11 10 10 04 2000 Start al Tame Vanda 1553 01 07 End at Tone dew 1399 12 11 Fur the following bounding box Cormer UL UR LR LL Latitede SOOO 10000 38 0443 38 0443 Lomgitudm 1850 0000 76 0086 756 0886 H LEU 0O00 TEAR MONTH Wimd DTED GOES Toral D ataSoeti 1955 3 1999 8 18 1899 i E 1955 11 1 1555 11 Sensor Figure 9 Sample output of TimeSeries Get Data in Box by Months menu choice The blue underlined numbers indicate that they are a hypertext link to an IDB applet which will display the datasets on that row Note the color coding of the cells in the table e Yellow indicates or more data items found for that particular dataset e
54. ress of the client computer displaying the WIPE applet Each image on the image display window is actually a jpeg file with a specific filename The colii filename is based ipaddr the current time and count which increments by 1 in order to prevent files being overwritten when 2 requests for images are sent to the applet within a very small period of time such as when a user enters a rapid succession of clicks to the applet x1 Longitude of upper left hand corner of rectangular ROI Same as vx for no user defined ROI yl Latitude of upper left hand corner of rectangular ROI Same as vy for no user defined ROI x2 Longitude of lower left hand corner of rectangular ROI Same as vx2 for no user defined ROI y2 Latitude of lower left hand corner of rectangular ROI Same as vy2 for no user defined ROI Column number of the upper left hand corner of a rectangular ROI box on the image display screen IDS This number starts at zero at the upper left hand corner of the IDS and increases toward the right hand side of the IDS The upper limit of c is W If the user does not define an ROI then the entire image display screen is treated as the ROI Row number of the upper left hand corner of a rectangular ROI box on the image display screen IDS This number starts at zero and increases toward the bottom of the IDS The upper limit of rl is If the user does not define an ROI then the entire image display screen is trea
55. roVIEW 2 WIPE s High Level Search Browser HLSB Applet 3 WIPE s Interactive Data Browser IDB Applet Overview of WIPE Features WIPE provides a fully integrated hardware software system for the assimilation processing and fusion of different satellite image data sets via a simple to use WEB based interface A single WIPE system consists of an automatic data ingestion engine and a network enabled server engine Both the ingestion and server engines provide Low Cost Hardware servers are implemented in Windows NT systems Multiprocessor capability the computational load can be distributed over multiple Windows NT servers The ingestion and server engines can reside on different machines Effective use of the Available Bandwidth imagery data is automatically geo referenced and re sampled for display at the selected user resolution Ingestion Engine The ingestion engine is constantly checking for the arrival of new data to be processed It also captures all the methods for the processing of the recently received data As part of the ingestion process the source image data is stored in an intermediate format virtual file format VFF which provides rapid data access over the WWW at any resolution Conversion to the VFF is optional The system is modular enough such that new data formats can be rapidly added into the ingestion engine APPLIED COHERENT TECHNOLOGY CORP ACT Data Server Engine The WIPE server engin
56. s vj Grid Mag Factor Shoreline Rivers Status 2000 06 24 O00 2000 06 24 00 2000 06 24 00 2000 06 23 21 WIPE Applet 20000616 ACT Corp c 2000 Figure 4 Sample Screen of Interactive Data Browser depicting derived Wind directions with shoreline and latlon grid overlays Note the additional layers displayed in the Layers window which indicate the availability of data at different altitudes IDB Applet Controls Screen Item Description ROI The drop down menu allows the user to choose the method of defining the Region of Interest ROI It can be defined as a rectangular ROI a line or a series of points The ROI method is used in conjunction with various plotting tools e g Line method must be used in order to use the ROI Line Plot Menu Item The N S W E boxes show the current latitude longitude bounds of the Image Display and can be user edited to quickly change the viewing window location xFactor Displays the scaling factor used by the Image Display Screen V PixelRes Displays the actual vertical resolution of a pixel on the Image Display Screen Zoom Perform same function as in HLSB Click to zoom into or out of the ROI Prev Next Located below the zoom buttons are 2 arrows facing left and right They allow the user Arrows to go back and forth between the previously cached applet states An applet state is
57. ses the polygon Click on the UPDATE button The HLSB will now update the display such that the dotted rectangle fills the IDS You can also update the display by right clicking and selecting ZOOM IN from the pop up menu Notice how the colored polygon now fills a larger portion of the IDS Use the arrows bordering the IDS to move the viewing window left right down and up Then double click on the center of the colored polygon The display will update and center itself on that point Feel free to experiment with the ZOOM buttons on the HSLB and on the pop up menu right click on the IDS to bring up the menu When no ROI is selected the ZOOM buttons utilize the center of the IDS as a reference point Displaying Available DataSets for a Given Time In some cases the user may have need to determine the amount of dataset coverage for a given time window as well as having a means of tabulating this information The TimeSeries menu item in the HLSB serves this purpose It allows the user to quickly see which sensors have coverage for a given area and time span as well as seeing which sensors have concurrent data for a given time increment The following demonstrates the use of the TimeSeries menu l Set the TOI to the desired time span The time span can be defined in absolute terms Start Time and End Time or in relative terms last 24 hours or last 12 months Set the desired ROI by drawing a box around the region in the image dis
58. ted as the ROI c2 Number of columns in the rectangular ROI on the image display screen r2 Number of rows in the rectangular ROI on the image display screen vxl Longitude of upper left hand corner of image display vyl Latitude of upper left hand corner of image display vx2 Longitude of lower left hand corner of image display AxI Longitude of upper left hand corner of world as projected on a rectangular flat surface Ayl Latitude of upper left hand corner of world as projected on a rectangular flat surface Ax2 Longitude of lower right hand corner of world as projected on a rectangular flat surface Ay2 Latitude of lower right hand corner of world as projected on a rectangular flat surface Sadiust Defines the amount by which M longlat has to be adjusted in order to center the world view on a J different longitude Set by the user in the Options Center View at Longitude field in the applet List of datasets in the following format dataset Idataset lid 9 layerl dataset2ldataset2id layer2 Note that each dataset id layer string is DataSet comma delimited The dataset and dataset ID should correspond exactly to that shown in the datasets list window in the applet Also the layer number corresponds to the layer selected for that particular dataset Note that this variable is updated only after the user has clicked on the UPDATE button on the applet The Generalized Region Of Interest for each dataset in DataSet in the creation of the i
59. uch as the selection of datasets for display basic plotting functions and use of the volumetric display methods The Interactive Display Browser is executed when the user selects a dataset in the HLSB and clicks the GET DATA IN BOX menu item Dataset selection and Display Screen Manipulation Dataset selection in the IDB refers to the selection of specific data images contained within the dataset For example a dataset could be Satellite X sensor images in the HLSB and would contain hundreds of data images the list of which would be contained in the IDB This tutorial assumes the following e valid dataset one containing actual data has been selected by the HLSB e user has centered on a dataset polygon in the HLSB before executing the GET DATA IN BOX command 1 The first thing to notice is that there should be a dataset already selected and displayed in the IDS Image Display Screen 2 Select another dataset by right clicking on the list and click the UPDATE button Note that this dataset will be displayed in addition to the previous one 3 If the dataset selected has additional layers they will be shown in the Layers List Box Click on a layer to select it and click APPLIED COHERENT TECHNOLOGY CORP ACT 35 UPDATE layer should be displayed on the screen If not it may be obscured by other datasets and will be more visible in another display such as a 3D plot 4 Use the na
60. ues are increasing This is an example of a multi layered dataset DataSet Control Fields Field Name Description DataSet Shows the currently selected datasets ID Displays the DataSet ID It is usually a string based on the data collection time or some other identifier that separates it from other data files within the same DataSet Layer The selected layer within a particular DataSet ID The figure above illustrates the ability to set the parameters for different layers within a particular DataSet ID group In the figure the DataSet consists of Wind Direction data values the ID defines the particular data values are for Jun 24 2000 and the multiple layers indicate the data is stored in arrays corresponding to specific altitudes Rmin The minimum value to use Rmax The maximum value to use XROI Clicking the EDIT button brings up a text window which allows the user to specify a GROI for the dataset by using the ProVIEW scripting language Interpolation Displays the type of interpolation used on the data values 0 to use zero order interpolation 1 to use first order interpolation IMF Displays the Image Mapping Function and min max values to use for the function See below for a more detailed description of the three available functions and their effect on the displayed image Palette Specifies the palette file to use when mapping data values to color values APPLIED COHERENT TECHNOLOGY CORP ACT IDB Menu Options
61. used in building custom scripts The ProVIEW manual has a detailed listing of all the system variables and MSHELL commands most of which can be used in a WIPE server As a final note a custom script can be sent to the WIPE Server Administrator for inclusion into the applet as a menu item The getI function is a good example of a function that can be turned into an applet control such that the user can select a dataset and then click on the a button to instantly browse dataset images The advantage of this is the output will be shown in a separate window leaving the IDS intact and bypassing the use of navigation arrows zoom buttons and other applet controls APPLIED COHERENT TECHNOLOGY CORP ACT
62. veral drop down menus which both show the current settings for the topo drape options and allow the user to change those settings The menu headers will also display the following information via tool tips shown when the pointer rests on the header APPLIED COHERENT TECHNOLOGY CORP ACT 24 Drape Option Description Current Rotation The rotation angle in degrees of the topo image relative to the original orientation Rotation is measured positive counter clockwise along the vector normal to the image Current Tilt The tilt angle of the topo image in degrees relative to the original orientation Tilt is measured positive clockwise along a vector in the plane of the image and normal to the right side of the image Current Image Size The size of the image measured as an N by N box where N is selected by the user Current Scale Num The amount by which height differences are exaggerated higher scale number increases the exaggeration Current Topo Choice Choose whether to use only DTED digital terrain elevation data only Bathymetry ocean depth data or both Volumetric Visualization There are many instances where datasets will overlap a given region of interest Several examples are infrared sensor collections bathymetry measurements and repeated satellite images of the same location at different times In addition each dataset type may have different lay
63. vigation arrows surrounding the image display to move the viewing window around the dataset Experiment with the zoom buttons and see how they affect the IDS Basic Plotting Functions IDB The Interactive Data Browser allows the user to plot the data values and visualize the data in various 3 dimensional representations This section will show the user how to access the plotting functions covered under the PLOT menu item on the IDB Tool Bar ROI LINE PLOT The ROI Line PLOT is generally used to view data values along an arbitrary line for a given dataset and dataset layer if more than 1 layer exists 1 First select LINE from the ROI pull down menu Center the dataset within the Interactive Display Screen if you have not already done so 2 Click and hold the left mouse button down on a starting point in the display and drag a line across the image This will be the line along which the IDB will extract values for the plot 3 Click on PLOT in the IDB Tool bar and select ROI LINE PLOT This will bring up another window showing a plot of the data values 4 The output window also displays a hypertext link below the plot which allows you to download an ASCII file containing the x y values used in generating the plot ROI 3D PLOT The ROI 3D Plot is used to view data values across a rectangular area for a given dataset and dataset layer 1 Select RECTANGULAR from the ROI pull down menu Center a portion of the dataset within t
64. wser At this time WIPE has been tested with e Netscape version 4 0 or above e Internet Explorer 5 0 or above In either case we use the SUN s swingjar JAVA classes to provide a consistent graphical user interface between platforms The swingjar classes can be downloaded from http wipe actgate com In WIPE most of the work is done at the server Hence the basic load on the on the client computer is to run the WIPE applets As the user downloads more images the applet will use more memory resources to facilitate easy access to previously downloaded images quickly APPLIED COHERENT TECHNOLOGY CORP ACT Client Side Requirements Browser Requirements The basic interface to a WIPE server is via a WEB browser At this time the two browsers under which WIPE has been tested are Netscape version 4 0 or above Internet Explorer 5 0 or above In either case we use the SUN s swingjar JAVA classes to provide a consistent graphical user interface between platforms The swingjar classes be downloaded from SUN from ACT http wipe actgate com Hardware Requirements Almost any computer with a browser can connect to a WIPE server over the INTERNET In WIPE most of the work is done at the server Hence the basic load on the on the client computer is to run the WIPE applets As the user downloads more images the applet will use more memory resources to facilitate easy access to those previously downloaded quickly

User`s Manual - WIPE - Applied Coherent Technology

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