ARRI Projection HDTV User's Manual
Contents
1. dC M chroma difference for magenta dC Y chroma difference for yellow The color specific settings dL R etc always take precedence over the color independent setting dL regardless of the order of the arguments This means there is no difference in specifying e g dL R before or after 36 Soft clip parameters demystified Gamut compression can be achieved in general by reducing the chroma of colors thus moving colors slightly towards the gray axis In the case of recording CRT monitor images to film due to the fact that film gamut reaches its maximum chroma at lower levels of lightness than the monitor gamut carefully reducing lightness also moves colors into the film gamut Best results are achieved by balancing chroma and lightness reduction The soft clip parameters specify the amount of change in terms of the perceptual difference between the two e g setting dC R to 50 reduces red chroma by 50 of the difference between the pure red of the monitor and film gamut respectively Both chroma and lightness change depending on hue chroma and lightness so that dark and unsaturated colors are affected less than bright highly saturated colors For colors at which the film chroma is greater than the monitor chroma the chroma difference should be O or negative to gain gamut compression otherwise gamut extension would be the effect This is especially true for yellow 5 3 Provided profiles Pr2. 20 4 1 Naming Conventions in ALICE 20 Cinemascope 20 Inter Positive fullap geometries 21 Loader LUTs for Color Management 21 4 2 Input Format File Specification 22 Location of input format file 22 Syntax of input format 22 4 3 Finexuhing ALICE ies dise 24 Memory Footprint 24 24 4 4 Accessing DVS Disk Recorders 25 4 4 1 Browsing Disc 25 4 4 2 Network Timeouts 26 4 4 3 Partition Change 26 4 4 4 Command Line Interface 27 5 Color Management for Video Look 28 S I Operation from ALICE 28 5 1 1 Configuration of CMS node in ALICE 28 5 1 2 Soft clip Parameter anco ER d pests 29 5 1 3 Display 30 5 2 Configurations eem ees 22 5 2 1 Monitor 32 Calibration of the HD class A reference monitor 32 5 2 2 susti deua E 32 5 2 3 Color Management 39 The CMS node syntax 33 No
3. at a time and only frames on active partitions can be accessed Since changing the active partition will prevent all other applications and real time operations to be stopped the ARRILASER software can be allowed or forbidden to automatically switch to the partition it needs If the environment variable AL DR PARTITION CHANGE is set to 1 both CLIF and ALICE will switch partitions without notice If unset or set to O CLIF will never change partitions while ALICE will ask the user The environment variable can be set in c iNeshellMlogin csh 4 4 4 Command Line Interface Syntax Frames on disc recorder can be accessed the Note alexpose command as files using the protocollike filename convention dr lt host name gt lt partition name gt lt clip name gt lt frame number gt e g dr mydiscrecorder PART1 testclip 42 means frame 42 within the clip testclip Frame enumerations starts with frame Omitting the clip name addresses the complete partition e g dr mydiscrecorder PART1 500 This is a name convention built in the CLIF and ALGUI software not a protocol Therefore no extra drives have to be installed to use this feature Although the DVS software allows the creation of partition and clip names containing or these will not work The reserved clip name a single dot shall also be avoided e e Configuration 27 Monitor Printfilm M sony
4. hd vision hard Color Management 28 5 Color Management for Video Look 5 1 Operation from ALICE 5 1 1 Configuration of CMS node in ALICE e Choose monitor profile sony_hd from the list beside M e Choose print film profile vision from the list beside e Choose soft clip parameter from the list beside clip If you have your own ICC profiles copy them into the folder c al ipconfig icc After restarting ALICE they will appear in the profile selection list beside M and P 5 1 2 Soft clip Parameter As the color gamuts of film and monitor are different not all colors that are visible on the monitor can be reproduced on film In order not to lose too much detail in those areas it is required that either the lightness or the chromaticity of these areas is reduced In the list of soft clips a preselection of recommended soft clips can be found As using a soft clip will not only affect the outof gamut colors but also the colors that are just within the gamut the lowest possible soft clip should be taken The strength of the softclip is dictated by the out of gamut colors in the sequence to record For judging the softclip use the proof and the gamut function in the process view 5 1 3 Color Management 29 Color Management 30 Display Settings Fit x 0 w 1920 h 1080 View cneon v Proof Gamut 5 1 3
5. section within the network tab in ALICE preferences The entry is a comma separated list of the disk recorders Disk recorders can be specified by ip addresses or by name If specifying names make sure there is a domain name server entry for the disc recorders or list them in the windows host file o winnt system32 drivers etc hosts a Preferences Dialog Appearance Color Management Timeout network drives Timeout disc recorders 1500 ms prefered Disc Recorders 3po r2d2 neva walldorf stadler svdemo 10 Ok Cancel Configuration 25 Configuration 26 4 4 2 Network Timeouts Whenever browsing file servers or disc recorders with the Open Sequence dialog in ALICE or the Browse dialog in the ALGUI waiting for inactive servers can be annoying Therefore timeouts can be adjusted in the network tab of the preferences panel of ALICE When accessing a DVS disc recorder the check if the recorder is reachable is done by sending a ping request to its host A value of O disables checking connections to unreachable disc recorders will then timeout by the DVS defaults The timeout is ignored whenever loading images from the disc recorder both by ALICE and CLIF Therefore it does not affect recording 4 4 3 Partition Change Policy On DVS disc recorders frames of different sizes are stored in different partitions Only one partition can be active
6. 1 Preferences Dialog 2 x olor Management Network Background Color Perforation Color Film Color Sound Track Color Transparency 50 86 Font Ok Cancel 3 The File Menu Preferences has three tabs Appearance to adjust the background perforation film soundtrack and frame line color in the film view Transparency of soundtrack and frame line can also be adjusted The general ALICE font can be changed as well Color Management The profile for your workstation monitor can be selected here It is necessary to make a selection in order to use the proof button Settings for the out of gamut display can also be modified in this dialog see chapter Color Management for Video look for more detailed information Network Available DVS hard disk recorders as well as appropriate network timeouts can be determined in this dialog see chapter 4 4 Accessing DVS Disk Recorders for more detailed information Select sequence The file browser opens and the sequence can be selected in the display This change will also be returned to the ALGUI if ALICE is left with saving Save configuration as will open the file menu The actual image processing configuration can be saved without leaving ALICE Save job as will save the actual job including all settings from the ALGUI without leaving ALICE You will first be asked to save the image processing
7. 1200 0 pullDown 18960 20 Inter Positive fullap geometries Geometry files named ipfullap cfg are used as fullap geometries for intermed positive recording For each supported pitch there must be one and not more than one ip fullap geometry file ALICE is installed with ip fullap geometries for all supported pitches Example Format 2Kipfullap xSize 2048 ySize 1583 xOffset 0 yOffset 0 xOrigin 1797 yOrigin 2352 pitch 1200 0 pullDown 18960 Loader LUTs for Color Management see also chapter 5 Loader LUTs are used to convert images to cineon code values prior to recording Since the cineon conversion is built in the ICC profiles used for the Color Management Color Management will fail if incorrect loader LUTs are selected Therefore ALICE automatically selects the appropriate loader LUT if Color Management is turned on They are distinguished from other loader LUTs by starting their name with CMS If there is more than one CMS LUT for a bit depth the user can choose between these LUTs but will be prevented from selecting other LUTs ALICE is installed with CMS loader LUTs for each bit depth named cms08 lut cms10 lut cms12 lut and cms16 lut Note Do not change the loader LUT in the ALGUI if Color Management is selected Confiquration 4 1 21 Configuration 22 4 2 Input Format File Specification Location of input format file The fully qualified path and filename of the
8. Display settings Proof Since the color profiles directly generate cineon data judging the effect of the Color Management on the screen can be difficult Therefore the proof mode allows for simulating the appearance of the recorded image on the workstation monitor To use the proof mode an ICC profile for the monitor has to be selected in preferences Note Itis also handy to select the HDTV monitor as workstation monitor regardless of the fact that it is nota HD monitor since this display allows checking the effect of clipping outof gamut colors easily by using the C toggle key Go to file preferences Color Management Choose workstation profile sony_hd icm There it can be judged if the loss of resolution in those areas is acceptable or not If not a soft clip can be applied Using a soft clip it is recognizable that more colors are different to the original but at the same time more detail can be achieved in back Gamut The colors can also be indicated separately if the gamut box is tocked This will highlight the areas which are outof gamut Be aware that in these areas clipping can occur These areas can be reduced by changing the soft clip parameters The way of highlighting can be modified in the preferences Color Management dialog There the color in which those areas are indicated be choosen preferable a color which is not so present in the images and ho
9. arrow up down The ine value indicates the step width double half the increment value for moving through the timeline using the arrow keys on your keyboard To skip frames change the inc value numerically or by choosing the predefined values in the drop down list To reset the displayed frame range click on the home button at the right end of the timeline This will refresh the images and reset the frame range Projectable Area Note By choosing an output format in the projectable area internally the corresponding projector mask is selected The projector mask the save title area or both together can be activated Additionally the reserved region for the soundtrack and the frame line can be displayed The areas are only seen in the film view and have no effect on the processed images Pixel Info Note With the mouse pointer you can pinpoint the RGB code values CV The x y position is shown in the upper left corner of the pixel info section In the original view the original CVs from the input images 8 10 12 or 16 bit are displayed In the processed view 16 bit RGB values are shown because internally all image processing is done in 16 bit The film view shows the 10 bit cineon CV as they are sent to the recorder Those values will change by changing the loader LUT Display Settings e Choose a zoom factor from the drop down list in the di
10. configuration file for that new job and then be prompted to save the job Save view as is used to save the current view as a JPEG image 8bit uncompressed or compressed with overlays if activated or a TIFF image 8 or 16 bit without overlays Overlays are the projector mask and the save title area Note factor TIFF images are always saved in the true image size regardless of the magnification factor They also preserve the internal data range used so images with bit depth less than 16 will appear dim as TIFF files Choose Exit and save configuration or close the ALICE window with the X to save the image processing configuration file and exit ALICE JPEG image saves the view as displayed with a size according to the present magnification The File Menu 6 4 Configuration 4 1 Naming Conventions in ALICE On startup ALICE analyzes all configuration files directories Cinemascope geometries and environment variables relevant for recording In addition to the information stored the files there are Geometry files with CS in capital letters in their file some conventions for naming files These are relevant name are assumed to define cinemascope geometries for ALICE only thus causing the recorded image to be warped for anamorphic projection Example Format CS 2K1828x1556 xSize 1828 ySize 1556 xOffset 220 yOffset 0 xOrigin 1797 yOrigin 2514 pitch
11. 5 ALGUI 3 44 In this case a filter size and strength must be choosen Filter strength is set in percentage and can be varied from O to 200 To judge the sharpening effect set the display settings to 100 For quick comparison between sharpen on off toggle key S in the processed view mode CMS The Color Management system CMS node is used to apply high quality profiles for standard devices such as Sony HD Monitor and Kodak Vision print stock projected by a xenon lamp in order to bring the colors of the film output close to what can be seen on the monitor n the CMS node a monitor profile M and a print film profile P is selected For images with high saturated colors the soft clip can be adjusted by choosing one of the prepared soft clip settings from the list See chapter 5 Color Management for Video look for more detailed information on the Color Management To judge the CMS settings switch the proof button on For quick comparison between CMS on off toggle key C Note This node is key protected and only available when the Color Management option has been purchased Note toggle on off feature for Deinterlace Sharpen and CMS only works in the processed view e Operation 17 The File Menu File About Ctrl F Select Sequence Ctrl D Save Configuration as Save Job as Ctd Shit 5 Save View 35 Ctr 1 Exit and save Configuration
12. ARRI ALICE COLOR MANAGEMENT Instruction Manual As of April 2003 ARTWORK PICTURES AND TEXTS ARE COVERED BY OUR COPY RIGHT THEY MUST NOT BE COPIED FOR REPRODUCTION E G ON CD ROM pisks OR INTERNET SITES OR USED IN THEIR ENTIRE FORM OR IN EXCERPTS WITHOUT OUR PREVIOUS WRITTEN AGREEMENT IF YOU ARE DOWNLOADING PDF FILES FROM OUR INTERNET HOME PAGE FOR YOUR PERSONAL USE MAKE SURE TO CHECK FOR UPDATED VERSIONS WE CANNOT TAKE ANY LIABILITY WHATSOEVER FOR DOWNLOADED FILES AS TECHNICAL DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE Contents Safety Instructions Lc 3 1 ALICE ARRILASER Interactive Configuration Editor 5 2 assises fear ete estet 7 2 17 MIGWOE GREGG coe RED n dtes 7 I 8 9 FixelInfo bud 9 Display 9 2 2 Configuration 11 Input Format erinnere 11 CUIDUFFOFTOL ule oro tes 12 Calibration 12 Crop ALCO csi ert eed as 13 Crop box handling with the aspect locked 13 Crop box handling with the aspect unlocked 14 Right mouse bullon 15 eg EINE 16 16 CRAS cete 17 3 The File Menu breues 18 4 COMMUNISM sete ese Uia
13. aspect ratio To enlarge the aspect ratio e g 1 66 to 1 85 means to decrease the projectable image height To do so change the projection aspect ratio in the output node Drag a side gt vary the size fixed to the opposite side ALT drag a side gt vary the size and aspect fixed to the center Right mouse button To reset the crop box to its default to maximize or center the crop box use the right mouse button when the mouse is located in the image area Maximize crop box Reset crop box Center crop box Center horizontal Center vertical Zoom in Ctrl Zoom out Ctrl 100 Fit Operation BS aff Deinterlace The deinterlace node enables the merging of two fields of video originated frames There are no arguments required For quick comparison between deinterlace on off toggle key D in the processed view mode Pushing down the key will disable the effect on the image and the color of the icon will change to black amp white For effect on release the key Sharpen The sharpen node applies a sharpening process on the image The details of the sharpening process are determined either by choosing a predefined kernel file and following the description of the convolution node see chapter 5 5 2 4 of the ARRILASER manual or by choosing variable and using the unsharp masking as described in chapter 4 of the Release Notes CLIF 3
14. cinemascope lenses All available geometries for this aspect ratio will appear in the second drop down list The pixel resolution and the pitch size provides additional information about the chosen output geometry A crop box with the appropriate aspect ratio will appear on the display Geometries which are not available in the list can be generated in the ALGUI geometry setup as described in chapter 5 2 2 2 of the ARRILASER manual Restarting the ALICE software will place those new geometries in the list Changing the output format will reset the crop area to the maximum appropriate settings to fit into the new output format Calibration Select the actual calibration and loader LUT for the used film stock and lab and the format conversion look up4able LUT The LUT converts the given files into the Cineon format Choose 1Olog if the files are already in the Cineon format Those settings are taken from the ALGUI input window changes will be returned to the ALGUI input window Intermed Positive Adds the necessary changes to the image processing config file for intermed positive recording Necessary adjustments like flip the image paste on black background and invert the loader LUT interposlut are automatically done Results can be seen in the film view No other adjustments need to be done for intermediate positive recording With the crop node a crop area can b
15. de type identifier and node arguments 34 5 2 4 Soft clip Configuration 35 Location of soft clip configuration file 35 Syntax of soft clip configuration file 35 Soft clip parameters demystified 37 573 Provided profiles uc eoo Sette 37 Safety Instructions t Caution This manual is an addendum to the existing ARRILASER instruction manual Please make sure to read the ARRILASER manual prior to continuing with this manual 1 ALICE ARRILASER Interactive Configuration Editor The ALICE offers the fastest easiest and safest way to generate a new image processing configuration file and gives visual control over the whole image process from the raw input sequence to the final images positioned on the film General input parameters like start end frame calibration and loader LUT can also be specified and will be transferred to the GUI input window when quitting and saving the ALICE window Furthermore additional information is provided about the input images such as image type pixel size and bit depth Analyzing and controlling tools further simplify the configuration process The purpose of ALICE is to judge the quality of the input images to select the frame range visually to build a job and select appropriate job settings with visual control of the final rendered images positioned on the film By choos
16. ding to the standard GUI configuration It is mainly intended as a reference In this window a configuration file for the image processing can be build Note This configuration file works only together with the chosen geometry See chapter 5 5 Image Processing of the ARRILASER Manual for a detailed description of the image processing function Input Format In the input format section the size bit depth and pixel aspect ratio of the selected sequence are displayed By default images of the size 1920x1080 are auto matically recognized as HDTV 1080 pixel aspect 1 0 of 1280x720 as HDTV 1280 pixel aspect 1 0 of 720x486 as NTSC pixel aspect 0 9385 and images of the size 720x576 are recognized as either PAL pixel aspect 1 067 or PAL Plus pixel aspect 1 416 e Operation The right choice for PAL or PAL Plus must be selected by the user All other formats are taken as generic and a pixel aspect of 1 is assumed For modifying this default selection please refer to chapter 4 Start and end frame for the selected sequences are taken from the ALGUI window To change the recordable frame range enter the start end frame in the corresponding text fields Operation 12 Output Format The determination of the output format is a two stage selection procedure First the desired projection aspect ratio must be choosen i e 1 2 35 CS means squeezed for projection with
17. e specified by the x y size and the origin of the crop box in relation to the original image By selecting a projection aspect ratio e g 1 66 in the output format node the maximum appropriate crop area settings are adjusted automatically and if necessary the image is auto scaled to fit into the chosen output format By default the x size of the crop box is set to maximum input image width and the image height is selected according to the aspect ratio Crop box handling with the aspect locked CTRL drag the center gt move the crop box ALT drag the border gt vary the size fixed to its center Drag a corner gt vary the size fixed to the opposite corner Drag a side gt vary the size fixed to the opposite side Crop Area x Position Size 920 080 Aspect 78 lock aspect e Operation 13 Crop box handling with the aspect unlocked If the image should not be cropped in order to get the selected output format the lock aspect button gt photo can be switched off This mode allows to only downsize the aspect ratio starting from the chosen ratio in the output format node The result is a horizontally centered image with a letterbox on both sides Check in the film view for the look The projectable image height remains constant according to the chosen projection
18. fault location is c al ipconfig icc alsoftclip cfg Syntax of soft clip configuration file The syntax of the soft clip configuration file follows the general syntax of ARRILASER configuration files as for example the film format file ARRI Film amp TV example of entry using the same settings for all colors softclip dL 25 25 all_the_same example of color specific entry softclip different dL 25 dC 25 dc R 10 dL M 10 Color Management 35 Ss el wi t For each entry in the soft clip configuration file the following parameters valid soft clip name of the setting used as value of soft clip parameter of the CMS node Example mysoftclip Q DL luminance difference used for each color if not specified color specific o dC chroma difference used for each color if not specified color specific 9 dL R luminance difference for red luminance difference for green g dL B luminance difference for blue dL C luminance difference for cyan gt dL M luminance difference for magenta dL Y luminance difference for yellow in dC R chroma difference for red dC G chroma difference for green dC B chroma difference for blue dC C chroma difference for cyan
19. ill come up The ALICE window is separated into the viewer area and the configuration area 2 1 Viewer area The viewer area includes the viewer window timeline projectable area pixel info and display settings It offers a visual control of the raw input sequence and is used to create interactively the configuration parameters A preview shows the actual position of the final images on the film The original view shows the original raw input images The processed view accurately displays the effects of the chosen filter and geometry settings output format crop area deinterlace sharpen and CMS if activated The film view shows the processed images positioned on the film for final control The timeline is simply a display of a frame range By default it is the length of the clip or sequence It does not limit or control the actual start end parameters saved in the jobscript Operation Operation Timeline change the displayed frame range enter the start end Additional keyboard shortcuts can be used frame in the corresponding text field at the beginning Arrow left right and end of the timeline retreat advance a step based on the frame increment setting The cur field shows the actual displayed Page up down frame number Typing a particular number in that retreat advance by approx a tenth of the timeline field will show this frame on the display range CTRL
20. ing an ICC profile for the workstation monitor the effect on the actual output on film can be previewed This is especially helpful in transferring colors that lie outside of the normally reproduced color space of the choosen film All results can be accurately previewed ALICE uses the same image processing as the image pro cessing used during recording Therefore the results of image processing operations previewed in ALICE are completely identical to those being recorded later Zooming in and out is always done by replicating or omitting pixels to exclude all possibility of inaccuracy of the displayed image viewer area projectable area T Projector Mask Saye Title Ares FF Sound Track FF Image Ber pixel info film view processed view display settings original view View cineon FE configuration area 2 Operation To start ALICE click the ALICE Button beneath the image processing configuration list in the input tab of ALGUI Any preselected image processing file will be applied in ALICE as long as it is compatible with ALICE s configuration If not or if no file is selected at all ALICE will be opened with default settings Geometry loader LUT and calibration can be preselected before opening the ALICE window or inside the ALICE window If a chosen setting is not compatible with the ALICE configuration default values w
21. input format file is specified in the environment variable ALICE_ INPUT FORMAT FILE The suggested location is o al alice config aliceInputFormats cfg Syntax of input format file The syntax of the input format configuration file follows the general syntax of ARRILASER configuration files as for example the film format file Each entry defines a valid input format that is a pixel aspect pixel width pixel height associated with an image size Whenever images of this size are selected ALICE displays a choice of pixel aspects denoted by names in the Input Format drop down list Instead of giving image width of height in pixels the keyword any denotes any arbitrary width or height Definitions using the keyword other are selectable if and only if no other entry matches the current image size HHH HH HH HH HH HH HH HH HH HHH HHH HHH HHH ARRILASER ALICE Input Format Configuration File ARRI Film amp TV HHH HH HH HH HH HH HH HH HHH HHH HHH examples of entries for images scanned from cinemascope film thus having a pixel aspect of 1 2 imageformat 2k cinemascope xSize 2048 ySize 1556 pixelAspect 0 5 imageformat generic cinemascope xSize any ySize any pixelAspect 0 5 PAL size image but with square pixels imageformat PAL square xSize 720 ySize 576 pixelAspect 1 0 ALICE uses the following internal rules to determine the list of input format
22. monitor profile string recorder profile string soft clip string intent string Color Management Description ICC profile to be used as monitor profile ICC profile to be used as recorder profile soft clip parameters to be used optional rendering intent to be used optional example configuration file showing the use of the Color Management node with default settings as used in ALICE node CMS monitorprofile hdmonitor icm recorderprofile arrilaser icm example configuration file showing the use of the Color Management node with soft clip node CMS monitorprofile hdmonitor icm recorderprofile arrilaser icm Soft clip weak 34 5 2 4 Soft clip Configuration File Colors outside the recorder gamut cannot be recorded without changes since they do not exist on film By default these colors are hard clipped into the recorder gamut To smoothly clip these colors a compression of the monitor gamut has to be done The strength of the compression can be controlled by the parameters given in the soft clip configuration file This chapter explains the syntax and use of this file Location of soft clip configuration file The fully qualified path and filename of the soft clip configuration file has to be specified in the environment variable ALIP_SOFTCLIP_FILE set under c cshel1 login csh and consistently in ALGUI startup file Arri txt The de
23. ovided with the color management are the following ICC profiles profile name sony hd icm description Sony BVM D24 class A HDTV studio monitor HDTV video safe range device dependent RGB values 16 bit RGB values representing the SMPTE260M video safe YUV range That means RGB 0 matches YUV 64 512 512 and RGB 65535 matches YUV 940 512 512 for 10bit YUV profile name vision icm description Kodak Vision print stock projected by a xenon lamp Color Management 37 technical data are subject to change without notice ARRI 2003 available languages English ARNOLD amp RICHTER CINETECHNIK T rkenstraBe 89 D 80799 M nchen Phone 49 089 3809 0 Fax 49 089 3809 1244 www arri com
24. s It internally maintains a list of input formats consisting of the entries of the user defined file followed by predefined HD and SD formats For any given input image each format matching the size of the image is displayed in the input format panel If no format is found in both the user defined and the internal list a generic format with pixel aspect 1 0 is assumed e e Configuration 23 4 3 Fine tuning ALICE Memory Footprint size of its internal image cache The image cache limit can be influenced by the environment variable ALICE MEM FRACTION Configuration environment variable can be set in c iNeshellMlogin csh 24 The amount of memory ALICE consumes depends on the maximum image size to be processed and the maximum Its value is the percentage of the memory marked ovailable to the application by the operating system Default is 0 25 meaning that a quarter of the memory is the upper limit of the image cache Note that this is the image cache only not the total memory footprint of the application The Multi Threading Besides running parallel to image loading and recording the image processing can operate multi threaded to make optimal use of the dual CPU system When running ALICE at the same time as recording on the same host computer multithreading can be switched off by setting ALIP_THREADS to 0 This affects both ALICE as well as image processing for recording Setting ALIP THREADS to 1
25. sensor e g a Philips PM 5639 5 2 2 Film Setup The vision print film profile is established under the following circumstances Recorded on Kodak 5242 intermediate film stock Recorder calibrated to carlos aim Printed on Kodak Vision print stock LAD frame Aqua 0015 printed to 1 09 1 06 1 03 densities 5 2 3 Color Management Node The Color Management node is part of the ARRILASER image processing system It allows the use of all features of the Color Management through its scripting interface Please refer to chapter 5 5 Image Processing Software Engine of the ARRILASER manual for detailed description of the image processing itself The CMS node syntax The CMS node creates a 3D lookup table from the ICC profile specified as monitor and recorder profile The monitor profile is taken as input profile the recorder profile as output profile An optional gamut compression can be activated by specifying one of the presets defined in the soft clip configuration file Also the rendering intent can be influenced by specifying either absolute relative perceptual or saturation For a detailed explanation of rendering intents refer to the ICC home page www color org The only intent supported by ALICE is absolute Color Management 33 keyword CMS Node type identifier and node arguments The Color Management node is identified by the Example Argument Type Default
26. splay settings area to zoom in out 25 200 or use the right mouse button or keyboard shortcuts Right mouse button zoom in out fit 100 the mouse pointer must be positioned in the viewer window Keyboard shortcuts ctrl numerical keypad ctrl F Fit ctrl 100 Beneath the zoom factor drop down list the information about the position of the upper left image corner X Y and the size width height of the part is shown While the image is usually displayed as a linear image exception Cineon files the view cineon button will display the image in cineon logarithmic space as they will be transferred to the recorder In that mode the influence of changing the loader LUTs can be seen The view cineon button is only activated in the film view To judge the influence of the Color Management use the proof and the gamut button see chapter 3 e Operation input format ALICE R tfe7CMMPetetNAB2002 in_CircleUngraded in_CircleUngraded_ 05d tit File About ALICE Projectable Area Pixel Into XART y 442 678 50 Display Settings x D w 1920 hr 1080 Original Processed ouput format calibration crop area CMS Sharpen Deinterlace 2 2 Configuration Area This chapter explains all available ALICE nodes and their parameters in a systematic way accor
27. turns on multi threading while setting it to auto causes the multi threading to be turned on but to be disabled it temporarily if both ALICE and aldaemon are running at the same time to allow interactive working with ALICE while computing data intensive recordings The auto setting is also the default if the environment variable is not set The environment variable can be set in o cshell login csh 4 4 Accessing DVS Disk Recorders Together with ALICE comes the possibility to directly access DVS HDTV and SDTV disc recorders Direct access to disc recorders is also possible via the command line interface The direct frame access uses the DVS API and does need the DVS virtual file system to be installed Frames are accessed as raw YUV data and converted to RGB by the ARRILASER software The conversion follows the DVS SMPTE274cgr matrices thus converting the video save range into full 16 bit range Since the conversion is done at a very early processing stage the images are seen by the ARRILASER software as 16 bit RGB images They also require 16 bit LUTs for recording regardless of being stored as 8 or 10 bit YUV on the disc recorder Also YUV data exported from the disc recorder as YUV16 can be read if given the file extension yuv16 4 4 1 Browsing Disc Recorders To make disc recorders visible in the sequence dialog panels define their host names or ip addresses in the preferred disc recorders
28. w to show the distance of those colors to the gamut fixed color All out ofgamut pixels are drawn with the out of gamut color selected in preferences blend to fix color The color of all out ofgamut pixels is smoothly blended with the outofgamut color selected in preferences The mixing ratio depends on the distance of the color to the gamut so that colors being far outside the film gamut finally are displayed in the out of gamut color only color distance mask In gamut pixels are displayed as gray while out of gamut pixels are blended between the gray and the original color The more saturated a color appears in this view the more it is out ofgamut Note that since the blending is done between the gray and the original color turning proof on has no effect herewith Color Management 31 Color Management 32 5 2 Configuration 5 2 1 Monitor Setup Calibration of the HD class A reference monitor The HD Monitor that has been used for the color timing shall be calibrated according to the following guidelines The color temperature shall be 6500K 100 white shall be at a luminance of 80 cd m 20 gray shall be at a luminance of 2 2 cd m The following two test images are needed for the calibration procedure calibration image luminance Y U 20 gray 2 2cd m 240 512 512 100 white 80 cd m 940 512 512 Note We recommend the use of a high quality color calibration
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