HardingFPA-X User's Manual - Harding Flash and Pattern Analyser
Contents
1. HardingFPA UOBB CAMBRIDGE RESEARCH SYSTEMS Cambridge Research Systems Ltd HardingFPA X User s Manual This manual details how to use the HardingFPA X system from a Client computer For HardingFPA X Version 3 2 0 Documentation date 11 12 2012 Page 2 of 55 Cambridge Research Systems Ltd Overview The HardingFPA X System is a distributed version of the HardingFPA Flash and Pattern Analyser It operates in a similar way but analyses file based workflows instead of tapes This manual describes the use of the client side components in the HardingFPA X System These are intended for users to submit jobs and view the results of analysis while the system takes care of the analysis possibly on a different computer on a local area network This manual does not include detailed installer administration instructions for the system These can be found in the HardingFPA X Administration Manual The client side of the HardingFPA X System consists of two applications namely HardingFPA X Submit and HardingFPA Viewer These can be found in Applications HFPA X on OS X and in the Start Menu under HFPA X on Windows Jobs can be submitted using the Submit application or by dropping the movie files into watch folders see your administrator to find out if you have watch folders enabled and where they are These jobs are then posted via the central database into the Job Queue where they are picked up by Analyser computers which2. The number of incidents and frames that exceed the test guidelines for red flash Spatial Patterns The number of incidents and frames that have exceeded the test guidelines for spatial patterns Extended Failure The number of incidents and frames that exceed the test guidelines for extended failure This represents the number of frames for which the black trace has appeared or equivalently the number of times that the maximum allowed number of flash warnings levels 0 3 or 0 4 in the most recent 5 seconds has been exceeded In addition to this information there is a second tab featuring Advanced Information This tab contains detailed information corresponding to the individual frame at the current cursor position and may be of use in determining the build up to a failure The items described are as follows Page 37 of 55 Cambridge Research Systems Ltd Analysis Summary Advanced Information 0 125 Frames 0 transitions 0 transitions O So 0 20 0 ___RedFlash contrast tz __SpatialPattern rea ae Spatial Pattern Contrast t0jz0 Luminance Diagnostic This is the numerical value of the diagnostic plot shown on the graph It represents the minimum number of transitions which the most active 25 of the image frame has seen in the most recent second Luminance Flash Area The percentage area of the image frame which has exceeded the Flash Guidelines Luminance Flash Contrast The aver
3. wmv mxf flv qt ps 3gp mkv m2ts In general if the file can be viewed correctly using QuickTime or Windows Media Player on the computer that the application is running on and is within the accepted limits for frame size and frame rate see below then the application will be able to analyse it The list of accepted frame sizes and frame rates are as follows Legacy SD analysis frame sizes 320x240 352x288 384x288 640x480 640x486 702 720 x 480 702 720 x 486 702 720 x 576 168x576 Legacy SD analysis frame rates 25 29 97 Version 3 SD analysis frame sizes supported 320x240 352x288 352x240 384x288 480x360 640x360 960x540 640x480 854x480 640x486 854x486 Page 5 of 55 Cambridge Research Systems Ltd 702 720 x 480 702 720 x 486 702 720 x 5 6 168x576 1024x576 Version 3 HD analysis frame sizes supported 960x720 1280x720 1440x1080 1920x1080 Version 3 analysis frame rates 24 25 29 97 30 50 59 94 60 The HardingFPA X uses the following frameworks to access video frames e FFmpeg e QuickTime e DirectShow on Windows only When presented with a file a framework is selected based on the movie file extension MXF Files An attempt is made to open the MXF file using the internal MXF library This library has support for OP1A and OP ATOM wrapped MXF files with the following codecs e D10 IMX e DV e DVCPRO e DVCPRO HD e DNxH
4. 6 down to 3 and in this example failure took place when the 4th transition was detected Page 52 of 55 Cambridge Research Systems Ltd HardingF PA HD 1030066 ADD S30 0 La Ha Luminance Alan E Red Plan W Spata Parrerre i Extended Faire W Anahi Conroe Deck conTok Q a Currant Sourne Mowe File as Pan Anaya Summary Adwanoed ifor manon The Results Menu Within the Results menu are the controls for navigating the results graphs and thumbnails and playing back sections of video only available where images are present images are only written to the results files in areas of interest for example around failures Page 53 of 55 Cambridge Research Systems Ltd A HardingFPA X Viewer File View Frame Mask QSEeiiS Tools Help Advance to Next Failure amp Go Back to Previous Failure Advance to Next Caution Go Back to Previous Caution i Set Results Start Fgup p Set Results End FgDn Clear Results Markers Del H Start Replay Ctrl F gt Replay One Second Before and After Cursor Ctrl F Replay Marked Region of Images Ctrl I Pee AERAR A Stop Replay Analysis Summary Adyarmeeomrorrmano r Advance to Next Failure Caution and Go Back to Previous Failure Caution will perform the same action as the seek right and seek left arrow buttons under the graph taking the cursor position to the next or previous failure caution area The following menu items provide the abili
5. Luminance Flash W Red Flash W Spatial Patterns E Extended Failure i HardingFPA broadcast flash amp pattern analyser CAMBRIDGE RESEARCH SYSTEMS TEST CERTIFICATE Results of Analysis by HardingFPA Flash and Pattern Analyser for Compliance with Ofcom Guidance Note for Licensees on Flashing Images and Regular Patterns in Television Ofcom Code May 2008 Analysis results also comply with ITU R BT 1702 LICENCE NUMBER 2 045 15 00 Page 17 of 55 Cambridge Research Systems Ltd Subliminal Event Analysis If enabled in the Settings the system will test the incoming material for potential subliminal frames at the same time as it is analysing for the usual flash and pattern criteria These frames will be identified on the graph visualisation as yellow circles shown in the example below A yellow circle below the PASS FAIL line indicates a subliminal warning and one above the line indicates a subliminal failure The appearance of the subliminal results can be switched on and off in the usual manner by clicking on the Subliminals yellow circle in the top right corner of the graph HardingFPA HD 3 4 2 OK File View Contr Frame Mask Results Tools Help 0100 0407 L 0 0 R 0 0 5 0 0 d 2 Luminance Flash W Red Flash il Spatial Patterns i Extended Failure il Subliminals Analysis Controls Deck Controls X Current Source Mowe Sie Macdonalds DV avi Analysis Summary Advanced I
6. displays a graphical representation of the characteristics of the analysed clip and some additional advanced diagnostic information This allows the user to quickly and efficiently view the locations of failures or cautions in the source material and optionally play back the areas around these failures to aid in rectifying the offending material a HardingFPA Viewer 3 11 0 File View Frarme Mask Results Tools Help Analysis Summary Advanced Information N A gt N A Failures gt 0 5 0 incidents 0 frames v 0 incidents 0 frames 0 incidents 0 frames 0 incidents 0 frames 4 lt amp h No Results Loaded Once a set of results PAR PAP and PAM files has been opened with the HardingFPA X Viewer the screen will appear similar to that displayed below A timeline is displayed at the bottom of the screen detailing the timecodes of the corresponding frames and whether the frame is a failed frame Failed Page 34 of 55 Cambridge Research Systems Ltd frames are surrounded in blue Please note that images are only displayed in certain circumstances around failure caution regions and if no image is present then the frame will contain the text No Image Wy Hardina PA Viewer a File View FrameMask Results Tools Help 01 00 01 06 L 0 3 R 0 0 0 0 Id 4 Luminance Flash i Red Flash E Spatiat Patterns fi Extended Failure i 01 00 01 06 ooeeeoey Viewing Save
7. the user to verify whether these flagged events constitute subliminal insertions or benign uncorrelated changes Why does the HardingFPA indicate a subliminal event one frame after it has occurred The HardingFPA needs to detect the start and end times of any potential subliminal insertion to determine whether the effect was rapid enough to be viewed subconsciously Therefore the HardingFPA can only log a subliminal event after it has disappeared Page 21 of 55 Cambridge Research Systems Ltd HardingFPA X Submit The HardingFPA X Submit is the main application on the client side of the system From this application you can submit jobs view the job queue see all completed jobs view the PDF certificate and graphical depictions of the results The Submit will automatically launch the Viewer application for results viewing There are two ways to submit jobs to the system for analysis manually See Submitting Jobs on page 2 and automatically See Watch Folder Support on page 28 User Interface The interface of the HardingFPA X Submit is split into two tabs The Job Queue described below lists all of the currently pending jobs in the system and the Completed Jobs list shows all of the completed jobs for the last 14 days The Job Queue displays the jobs in the order in which they will be analysed although some analysers may be set to only analyse jobs of a certain length so this may not be the exact order If jobs appe
8. 0 02 54 24110 03 54 24 10 02 55 0 1 Capture 12 02 2010 10 13 20 l Anaysed with Licence Tristan Linnell DEM Ofcom TU Deckiink SDI 3 0 1 Showing a flash but no flash risk trace 2 The flash risk trace dark green line appeared close to the pass fail limit for a long sequence of images but didn t enter the fail zone The system has detected flashing of above 3Hz and 20cd m2 in amplitude but the flash area is less than 25 of the screen area If the criteria for failure are not all met then the system will generate a line based on how close the material is to failure If the line is hovering just below the failure line then it might only need a tiny change in size of the flashing area to push it into failure Such a tiny change could be introduced when converting between formats frame rates or codecs if this is not done carefully using professional grade codecs The example below shows that the flash risk has remained close to the failure line for long enough to generate an extended flash failure This occurs whenever more than 80 of the frames in the last five seconds generated flash risk warnings of 0 3 or 0 4 i e close to failure Page 43 of 55 Cambridge Research Systems Ltd HardingFPA HD KOX Fie View Framefdlask Results Tools Help _ a 10 04 08 09 R 0 0 50 0 Li d la Luminance Flash i Red Flash W Spatial Patterns ll Extended Failure W Curent Sources Mone Analysis Summary Advanced Informatio
9. 16 43 2012 06 19 13 41 2012 06 19 13 48 2012 06 19 14 01 2012 06 19 13 59 2012 06 19 13 44 2012 06 19 13 42 2012 06 19 16 42 2012 06 19 13 46 2012 06 19 13 59 2012 06 19 13 40 2012 06 19 16 43 2012 06 19 14 00 2012 06 19 13 48 2012 06 19 13 41 Help Job Name 3 sample test mxf sample test mxt sample test mxt sample test mxf sample test mxt sample test mxf sample test mxt sample test rnxt sample test mxt ub 03 ub 01 mf ub 03 5ub 01 mxt Sub 03 5ub 01 mxf Sub 03 5ub 01 mxf Sub 03 5ub 01 mxf Video Mixdown 3 mxf Video Mixdown 3 mxf Video Mixdown 3 mxf 42 Video Mixdown 3 mxf Settings Show jobs submitted by all users Job Information Job ID 42 Job Name Video Mixdown 3 mxf Test Type Status warning Date Complete 19 06 2012 13 41 40 Filename HEPAX Bu sy Vi deo Mixdown 3 mxf Error Message JB Subrnt Meviss It is important to make sure the settings are correctly configured before starting to use the Submit application otherwise the jobs submitted will not be analysed and it will not be possible to view the job database The settings screen is found by clicking Tools Settings and is shown below You may only have read access to these settings if you are not running the application as an administrator user If you need to change the settings either run the Submit as an administrator user or contact your administrator The settings are separated into three tabs Da
10. D e AVC Intra Page 6 of 55 Cambridge Research Systems Ltd If the internal MXF library does support the MXF file format then the FFmpeg library is used to decode these frames The MXF library includes support for AVID MXF files as well as MXF time code tracks If the MXF file format is not supported by the internal MXF library an attempt is made to use the FFmpeg library to open the file directly On Windows platforms if all else fails an attempt to use DirectShow using any codecs installed in the system will be made If this is successful an attempt will be made to use the VITC information if any embedded in the video material MOV Files The QuickTime library will be used to open QuickTime files File support depends on the QuickTime codecs that are installed on the computer used for analysis The QuickTime library supports QuickTime timecode tracks The system does not support multi track QuickTime movies Other Files Firstly the use of FFmpeg is attempted followed by an attempt on Windows platforms only to use the DirectShow framework and finally the QuickTime framework Why use FFmpeg e FFmpeg provides a uniform set of embedded codecs that allow for consistent results across dif ferent platforms and installations e If a previous version of the application used DirectShow or QuickTime and a newer version uses FFmpeg there is a possibility that the results will differ due to the slight differences between
11. Folder Enable watch folder c watch Optional Movies placed here will be automatically submitted Analysis Options for Watch Folder only Analysis Standard Test Type id Qicom ony j Root Path This is the location of the root of your storage system This folder will typically be the root of the SAN or shared network drive where your media is kept This is the mount point that refers to that location from the current computer only and might be different on different computers Please contact your administrator if you do not know what this should be set to Results Folder This is the location where the Analysers in the system write the results to This is required for the Submit application to automatically launch the Viewer to view the results of movie analysis Page 25 of 55 Cambridge Research Systems Ltd Temporary Storage Folder This is an optional location where any submitted movie files will be copied to if they cannot be found in the root path This must be within the root path and must be writable by the user that the Submit is running as Watch Folder This specifies a folder in which to continually watch for movies and automatically submit any that appear Analysis Options for Watch Folder only This specifies the Analysis Standard used for any video files placed in the Watch folder and whether the Test Type is Normal for the whole video image or Centre Cutout or for 3D analysis depending on the
12. I DO O02 tS OOO 4 OO 00 23 700 TARRE 00 00 02 DRNEA 000i taig i 3 ps j P EJ E Piah le ee f f tr i if i A a T F A A i a Ay iy j l tie amp al Mita B ai Ey pP n Ia Z al B1 E ERIE N Rr ANED isavaour uMesdma tiMendma timenda En FTR at ot Myo Feed ey a go iny This contains more than one subliminal event as shown by the blue border images How does the HardingFPA Detect Subliminal Events Page 20 of 55 Cambridge Research Systems Ltd The HardingFPA searches for two sudden uncorrelated changes which occurred at different times but at the same position in the image sequence Changes which are blended in over several frames are not considered as potentially subliminal as they would be consciously noticed by the viewer The HardingFPA can log the occurrences of two sudden uncorrelated changes and issue a subliminal event or a subliminal warning depending on its duration These are indicated as yellow dots above and below the failure line respectively and are indications of where subliminal insertions may have occurred It is important to note that the HardingFPA may issue a large number of subliminal failures or warnings especially when analysing rapidly flashing imagery This does not necessarily mean that the video contains a large number of subliminal insertions but merely that the HardingFPA has detected a large number of potential candidates It is ultimately up to
13. If this location is set then any movies that are copied into the watch folder location are automatically submitted with default names and with the settings specified Once a movie file has been submitted and analysed through the watch folder it is not re submitted again until its modified date and time changes Aborting Jobs When using the Submit you may abort any jobs that you have submitted yourself Page 28 of 55 Cambridge Research Systems Ltd I AbortJob On the Job Queue tab highlight the job you wish to abort and click E AbortJob _ If the job is currently analysing the analysis will be stopped otherwise it will be set to the aborting status and disappear after a few minutes Viewing Results Submit is able to launch the Viewer to view the results of analyses that are currently busy analysing or have finished analysis To do so double click on a job either in the Completed Jobs list or one in the Job Queue that is busy a rE E el 2 s9 View Results f Jo View PDF t E Submit Movies J 4 Se Refresh ee es oe es ee A You may view the results of a completed job by right clicking on the job line in the Completed Jobs table The context menu shown above will then be displayed View Results will launch the HardingFPA X Viewer in order to see the graphical depiction of the results and View PDF will launch a third party PDF viewer to view the PDF certificate These actions can also be tied to
14. age contrast of the area of the image frame which has exceeded the Flash Guidelines Extended Flash Warnings The number of image frames which have generated flash warnings levels 0 3 or 0 4 in the most recent 5 seconds Red Diagnostic The number of red transitions which the most active 25 of the image frame has seen in the most recent second Red Flash Area The percentage area of the image frame which has exceeded the Red Flash Guidelines Red Flash Contrast The average amplitude of flash to and from saturated red of the area of the image frame which has exceeded the Red Flash Guidelines Spatial Pattern Area The percentage area of the image frame which has exceeded the Spatial Pattern Guidelines Spatial Pattern Contrast The average contrast of the area of the image frame which has exceeded the Spatial Pattern Guidelines Page 38 of 55 Cambridge Research Systems Ltd Frame Masks The results include visual information in addition to the results images in the form of Frame Masks These mask images are overlaid on top of the frame images on the large image in the top left of the main screen and depict the locations of problem areas in the sequence to aid in the repair of failing sequences When the results first appear on the graph the large image in the top left hand side will appear as usual In order to utilise the frame mask images Click on the Frame Mask menu and select the type of failure that you want
15. al Description can also be viewed here Analysis Information The table on the left hand side of the screen contains two tabs which display diagnostic information about the clip The Analysis Summary tab shows the following pieces of information which are applicable to the entire clip Saved A is 5 6150 BBC Test Material mov 10 03 40 22 00 03 40 235 00 03 40 25 Failures gt 0 5 1 incidents 5 frames 0 incidents 0 frames 2 incidents 93 frames 0 incidents 0 frames Page 36 of 55 Cambridge Research Systems Ltd Status Shows whether the HardingFPA X is reviewing results or in another state such as loading results analysing not loaded etc Video Source The video standard of the analysis being viewed Filename The filename or title of the source that was analysed to obtain the results currently being displayed Analysis Timecode The timecode of the final frame in the clip This is expressed in hours minutes seconds frames Marked Length The length of material currently marked off with Begin and End markers This is expressed in hours minutes seconds frames Recorded Length The total length of the clip expressed in hours minutes seconds frames Analysis Status The Pass Fail status of the clip with respect to the currently selected Flash and Pattern guidelines Luminance Flash The number of incidents and frames that have exceeded the test guidelines for luminance flash Red Flash
16. analyse the material and write out results files which may then be viewed using the HardingFPA Viewer This manual covers both the OS X and Windows versions of the HardingFPA X Submit and HardingFPA X Viewer which operate in an identical manner Page 3 of 55 Cambridge Research Systems Ltd Licensing Your administrator must have licensed your computer and username to run the HardingFPA X Submit application If you are not licensed you will see the following error dialogue box Licence Error X This computerusername i not licensed to use the Submit application Would you like to add t Requires administrator logini From this dialogue box the administrator may click Yes to license either your username or all users on your computer by entering the administrative password shown below The default password for this can be found in the HardingFPA X Administration Manual Ei Enter Supervisor Password Ea Password Zox The HardingFPA Viewer does not need to be licensed Page 4 of 55 Cambridge Research Systems Ltd Movie Files The system will open and attempt to analyse any movie file for which the computer it is installed on has the codec There are number of codecs included see below Any further codecs required will need to be installed on the computer s running the application Only movie files with the following extensions will be analysed _avi mov mpg mpeg m2v mp4 vob
17. ar to be out of order by Job ID it may be that the administrator has modified the priorities of one or more of the jobs in the queue Job priorities may only be changed by administrators Double clicking on a job in the Job Queue will launch the Viewer application in order to view the results as they are being analysed If the setting is configured in the Settings screen you may click Show jobs submitted by all user in order to see all jobs in the system If this is not checked or has not been checked by your administrator then you will only be able to view jobs that were submitted using the Submit using the computer user name combination that you are currently logged in as Please note that this filter only applies to jobs submitted with the Submit application and not those that you have dropped into watch folders ETA to next job shows the estimated waiting time until your first job in the list will be analysed If you do not have any jobs in the Job Queue the ETA shows the estimated time for all of the jobs in the Job Queue to be completed The format of this time is hours minutes seconds On both tabs there are two buttons Refresh and Submit Movies Refresh can be used to force a refresh of the current tab Submit Movies is used to enter new jobs into the Job Queue Page 22 of 55 Completed Jobs Cambridge Research Systems Ltd Results Tools Date Complete 2012 06 19 13 47 2012 06 19 16 44 2012 06 19 13 43 2012 06 19
18. codec algorithms The use of FFmpeg in current and future versions of the HardingFPA product range will mitigate this problem e FFmpeg in many cases removes the requirement of purchasing 3rd party MXF support and codecs as the MXF library in conjunction with FFmpeg now fulfils this requirement The FFmpeg library supports the following codecs D10 IMx DV DVCPRO DVCPRO HD DNxHD MPEG1VIDEO MPEG2VIDEO H261 H263 RV10 RV20 MJPEG MJPEGB MPEG4 MSMPEG4V1 MSMPEG4V2 MSMPEG4V3 WMV 1 Page 7 of 55 Cambridge Research Systems Ltd WMV2 H263P H263I FLV1 H264 INDEO3 VP3 THEORA ASV1 ASV2 FFV1 MSVIDEO7 SNOW XVID FFVHUFF INDEQO2 FRAPS VP5 VP6 VP6F FFH264 The decision tree that is used to decide which framework to use is shown in the flowchart below Page 8 of 55 Cambridge Research Systems Ltd Yes Cambridge Research Systems Ltd Version 3 Analysis Algorithms HardingFPA software now features new analysis algorithms which are better tuned to High Definition and File based work The Version 3 analysis algorithms are better suited to accommodate subtle changes in the image data and provide much closer results when testing the same material repurposed either into a different video format or encoded with a different codec The main differences between the legacy algorithms and the Version 3 algorithms are detailed below Different Graph Scaling The HardingFPA generates risk values using t
19. d Analysis Saved Analysis 480p29 97 00124 2 par 01 00 03 01 00 00 03 02 00 00 03 02 Failures gt 0 5 1 incidents 36 frames 0 incidents 0 frames 0 incidents 0 frames 0 incidents 0 frames C Users tristan CRS HFPAX Results 00124_2 par Analysed with Licence TAL Ofcom ITU Movie File V3 4 A large version of the thumbnail at the current cursor position is shown on the top left hand side of the screen The results can be browsed either by dragging the graph display left and right or by moving the scroll bar located at the bottom of the screen Clicking the left and right cursor keys will move the results one frame at a time To the right of this scroll bar there are two buttons which will move the cursor to the next or previous failure The View Menu Page 35 of 55 Cambridge Research Systems Ltd A HardingFPA X Viewer Fie WEYA Frame Mask Results Tools Help ae Material Description Ctrl a Zoom In Fl L Zoom Out Fe 4 Reset Zoom ShiFk F2 M2 Hide Diagnostics FS otf Show Caution Band Ctri U Within this menu are the options to zoom the graph in and out in order to focus on certain areas of the results as well as the options to show or hide the diagnostic traces and the caution band from the graph Zooming in and out may also be performed by the Zoom In and Zoom Out buttons underneath the graph or by pressing F1 and F2 The Materi
20. e combination that you are currently logged in as Automatically open Viewer when job starts analysing which will open the Viewer software as soon as a job in the Job Queue becomes busy to allow you to view the analysis process Submitting Jobs In order to submit a new job click on the Submit Movies button A Submit Movies dialogue will appear From this you may browse to the file s you wish to submit as jobs Multiple file selection is supported After selection the following screen appears and you may enter any additional information for the job and depending on licence select the Analysis Standard and additional options When all the information has been entered click OK Page 27 of 55 Cambridge Research Systems Ltd Submit Movies Movie Files Title Subtitle Extra Asset Mumber 12ire avi l FF avi Foes Wry Analysis Standard Ofcom ITU Za If the movie files chosen are not located within your Root Path an attempt is made to copy the files to the Temporary Storage Path for analysis The Analyser computers will analyse any movie file for which the computer it is installed on has the codec otherwise the Analysers will dismiss the job If in doubt contact your administrator Watch Folder Support Submit supports its own watch folder settings for ease of integration with editor s workflows The settings for which can be set up in the settings screen See Settings on page 23
21. g while a value of 0 5 and above indicates failure The number which follows in brackets represents the number of luminance transitions which have occurred in the most recent second X The presence or absence of an extended failure condition This column will either be blank or will contain an X symbol to indicate when an extended failure condition has occurred An extended failure occurs when luminance or red flash analysis generates warning values of 0 3 or 0 4 for at least 80 of the most recent 5 seconds Page 32 of 55 Cambridge Research Systems Ltd IMAGE The image column will normally contain the first and last images of the failed sequence If the failed sequence is too short to display both images only the first image will be displayed If the failed sequence is longer than an entire page column the first and last images for that column will also be displayed Page 33 of 55 Cambridge Research Systems Ltd HardingFPA Viewer The HardingFPA Viewer is used on the client side computers of the HardingFPA X System in order to view the results for completed analyses It is typically launched via the HardingFPA X Submit application by Right clicking on a completed job and selecting View Results but may also be launched separately in which case results files PAR PAP and PAM may be opened using the Open File button or menu item located under the File menu The Main Screen The HardingFPA Viewer screen
22. he same range as its predecessor i e 0 to 3 4 but displays the graphical data using a revised vertical scale This modified scale allocates much more vertical space for risk trace warnings and diagnostic trace steps but only displays risk traces up to the value of 3 0 Risk traces values from 3 1 to 3 4 are still logged as part of the results files but are graphically displayed capped at 3 0 i IJ i Ll a4 Arh m io spans paters E Extended Faire W EEE pet fae r 04 SOLO nO rna Pa Ried Flach E Spans Faatere W Extended Failure W EE Page 10 of 55 Cambridge Research Systems Ltd left Version 2 and right Version 3 Graphing The Squiggle The HardingFPA gives enhanced visual diagnostics when an incoming transition coincides with an outgoing transition from one exactly second earlier The Version 3 algorithms insert a squiggle see below to indicate when the diagnostic trace has simultaneously gained and lost a transition over the most recent second between video frames M HardingFPA HO Fie yew Frame Mask Beut Toot RDO 9000 L268 Luminance Flach i Red Flash i Tah La Fathers E Extended Fare W Capture 12 02 2010 10 13 20 Analysis Results The Version 3 algorithms give results which are broadly similar to those generated by version 2 5 The figure below shows the results of both versions when analysing the same video input under the same guidelines Page 11
23. ink SOI 3 0 7 The diagnostic trace decreased within a few frames after it had increased Shouldn t it have taken one second for the transition to flush out Not necessarily It is true that the diagnostic trace monitors transitions over the most recent second but the most active pixels that determine this diagnostic count are in most cases constantly changing The diagnostic trace will only follow this one second pattern if the most active pixels are changing together in phase The example below shows the diagnostic trace light green increasing from zero to one for a period of only two frames around the vertical amber current frame line before returning to zero Page 49 of 55 Cambridge Research Systems Ltd A HardingFPA X Viewer OK Fie View FrameMask Results Tools 10 06 32 04 R10 00 S 0 0L 0 4 ld 1 Luminance Flash W Read Flash Spatial Patterns M Extended Fale E Z 44 125 rai SOOO sO Oe Ss Ce ioe 0S Oe eo ee oS Toe se De j i E F F LAN a j F i i F hire i I F re zi wy oes o R U ora i EJ i 1 my A i tpi mr Pe st a ae ate pine CATE FPA Harding PAL Tape Test All mages par Analysed with Licence Tristan Linnel DEMO Ofcom TW Becklink SOT v3 0 8 The system passes a stationary pattern that looks as though it should have failed Some patterns that are clearly bar like in one direction may also possess some local structure in the orthogonal direct
24. iolations by Timecode LICENCE NUMBER 045 715 DATE OF ANALYSIS 12 01 2011 MATERIAL ID PotNoodles_dv mov DURATION OF MATERIAL TESTED 00 01 02 07 Imecone rep srat flum LX ae anf e a 10 00 27 17 10 00 27 18 10 00 27 19 10 00 27 20 10 00 27 21 10 00 27 22 10 00 27 23 10 00 27 24 10 00 28 00 10 00 28 01 10 00 28 02 10 00 28 03 10 00 28 04 10 00 28 05 10 00 28 06 10 00 28 07 10 00 28 08 10 00 28 09 10 00 28 10 10 00 28 11 10 00 28 12 10 00 28 13 10 00 28 14 10 00 28 15 10 00 28 16 10 00 30 11 10 00 30 12 10 00 30 13 10 00 30 14 10 00 30 15 10 00 30 16 10 00 30 17 10 00 30 18 10 00 30 19 10 00 30 20 10 00 30 21 10200730722 10200730723 10 00 30 24 10 00 31 00 10 00 31 01 10 00 31 02 10 00 31 03 10 00 31 04 10 00 31 05 10 00 31 06 10 00 31 07 10 00 31 08 10 00 31 09 10 00 31 10 2 6 15 7 5 14 RED The results of red flash analysis in the range of 0 0 to 3 4 A value of 0 3 or 0 4 indicates a warning while a value of 0 5 and above indicates failure The number which follows in brackets represents the number of transitions to or from a saturated red which have occurred in the most recent second SPAT The results of spatial pattern analysis in the range of 0 0 to 3 4 A value of 0 3 or 0 4 indicates a warning while a value of 0 5 and above indicates failure LUM The results of luminance flash analysis in the range of 0 0 to 3 4 A value of 0 3 or 0 4 indicates a warnin
25. ion Alternatively a pattern may not be sufficiently regular or may not have sufficient contrast throughout Any such structure may cause the system to see fewer than 6 light dark bars or may separate a provocative pattern into two or more regions Either of these mechanisms can save a provocative pattern that would otherwise have failed The spatial pattern in the example below passes because of text and foreground objects which break up the bar like pattern into smaller irregular regions Page 50 of 55 Cambridge Research Systems Ltd HA HardingFPA X Viewer EOX Fie View Frame Mask Results Tools j 1009 56 12 R00 50 4 L00 ld 0 Luminance Flash W Red Flash W Spatial Patterns M Extended Falure W mi i i tT ioga 5a ae Analysis Summary Advanced Information 5 0 125 frames Red Flash Contrast spatial Pattern Area a E 05 10 09 56 06 10 00 56 07 10 09 5 OS S6 0 10 a THE Haja H10 09 55 09 10 09 50 10 20309 311 eee SF 10 09 wo 13 10 09 50 14 T eee P 1 Spatial Pattern Contrast _ xs WREN FA la E ede ea a eee e e e m inal CATE FPA Harding PAL Tape Test All Images par Analysed with Licence Tristan Linnell DEMO Ofcom mJ Gecklink SDI V3 0 9 The analyser generates spatial warnings but it s not obvious where the pattern is Occasionally the spatial trace may appear when there is no obvious spatial pattern present in the vide
26. l re encoded at a different frame rate will usually have a different number of failed frames and the results may differ because of the extra or missing frames that were introduced during the conversion process The following items are phenomena commonly seen in the results along with explanations for the behaviour 1 A flash occurred but the normal flash risk trace didn t appear The main flash risk trace dark green line may not appear if flashing is less than 20cd m2 in contrast or if the flash frequency is significantly within guideline limits Remember that 2 opposing transitions make up a single flash The example below shows that two transitions have been detected by the diagnostic trace light green line but that the main risk trace has not yet appeared because the flash frequency up to this point is not considered to be significant Page 42 of 55 Cambridge Research Systems Ltd l HardingFPA HD EOX Fie View FrameMask Results Tools Hep a eee 10 03 54 23 R00 50 0 LiQ 0 ld 2 Luminance Flash W Red Flash W Spatial Patterns ll Extended Falure W Analysis Contras Deck Contras Curent Sources Mone Analysis Summary Advanced Information Luminance Di tic Luminance Flash Area X Luminance Flash Contrast 31 125 frames a are Flash Wear 4 16 10 08 54 17 10 03 54 1810 09 54 1910 03 54 20 10 09 54 21110 03 54 22 1
27. mation L 1211000 1 12 10 00 30 14010 000 31 15 10 00 31 16 1003 17 10 00 31 18 10 00 31 1910 00 31 20 10 00 31 21 j A ro pa if Tr l z Eo E at g Ta e Th rt rh A f ite y 3 Be e ai c i i J re TY J p Y J FiF A A a rh J TA O Eie IPA J l th A 2 as a Bee ME e _ ae a a ae a Le ji x F g F B m I Analysed with Licence Tristan Linnell DEMO Sicom TU Deckiink SDI 3 0 3 Flash graph persisting after the flash 4 The diagnostic transition count increased where no obvious flash had occurred The diagnostic trace represents the number of transitions seen by the most active 25 of the screen over the most recent second Therefore continuous image activity e g localised flashing and rapid movement within the scene caused by camera pan or zoom etc can steadily increase the number of transitions that individual pixels have seen and when at least 25 of those have seen an extra transition will the diagnostic count increase This can be quite tricky material to fix and may only be possible by reducing the brightness of the image or cut down on the whole area Page 45 of 55 Cambridge Research Systems Ltd HardingFPA HD o x Fie View FrameMask Results Tools Help 10 06 35 16 R00 50 0 Li d ld 5 Luminance Flash W Red Flash W Spatial Patterns ll Extended Failure W Analysis Contras Deck Contrals Curen Sources Mone Analysis Summa
28. n Luminance Diagnostic Luminance Flash Area Luminance Flash Contrast 4 08 04 10 04 08 05 10 04 09 06 10 04 08 0 Y7 110 04 08 0 0 98 10 N4 DAN go GE 5 110 pore di Capture 12 02 2010 10 13 20 Analysed with Licence Tristan Linnell DEMO Ofcom ITU Decklink SBI v3 0 2 Long sequence of flashing that eventually led to an Extended Flash Failure 3 The flash risk trace dark green line persists for several frames after a flash occurred This is perfectly normal and arises because of the way the system has to detect flashing frequencies over the most recent second You do not need to worry about the persistence of the flash risk traces you need to principally examine the second before the line moves into failure or where the diagnostics trace shows that the transition count is still rising Once you have corrected all the causes of the line first moving into failure then the material at that point will pass the test Note however that lots of flashing close together will generate a much longer compound failure the best thing to do is deal with the flashes one at a time until the material passes the test Page 44 of 55 Cambridge Research Systems Ltd a HardingFPA HD Fie View Frameldask Result Tools 10 00 31 19 R00 30 01 24 Hold Luminance Flash il Red Flash W Spatial Patterns W Extended Falure W Curent Sources Mone Analysis Summary Advanced Info
29. nformation L Viewing Saved Analysis Saved Anal 480159 94 00 03 29 01 00 04 00 01 00 04 01 01 00 04 02 01 00 04 03 01 00 04 04 01 00 04 05 01 00 04 06 01 00 04 07 01 00 04 08 01 00 04 09 01 00 04 10 A N i i a s P y A a b Pe a P onia Redfish incidents 0 frames Oincidents 0 frames__ SS l AD dp Analysis Stopped Analysed with Licence Mark Test Key Japan NAB 2006 Movie File V3 3 What is a Subliminal Event The insertion of an image or images with contents different from the preceding or following images which is too short for the viewer to be consciously aware of The duration of a subliminal event is user configurable The default settings are currently up to 0 05 seconds for a subliminal failure and up to 0 2 seconds for a subliminal warning A subliminal event may be inserted at a scene change as it is not Page 18 of 55 Cambridge Research Systems Ltd necessary for the images preceding and following the subliminal event to be similar Additionally a subliminal event may involve inserted text or a change to only part of the image It is important to note that a subliminal event must contain information An inserted blank image that is black white or uniform grey does not mean anything and is therefore not regarded as subliminal Examples of subliminal and non subliminal events Example 1 This is a subliminal event because of the inserted images The blue border in
30. o stream The example below shows a picture of the sea generating spatial warnings caused by waves in perspective creating faint repeating structure Other candidates for generating unexpected spatial responses are landscape in perspective net curtains and reams of paper However it is highly unlikely that any of these scenes would actually lead to a spatial pattern failure Page 51 of 55 Cambridge Research Systems Ltd HardingFPA X Viewer lp lt 4 Fie View FrameMask Results Tools Help 1003 22 21 B00 0 3 L 0 0 rd 01d 0 Luminance Flash W Red Flash W Spatial Patterns W Extended Falure W i ann nld 10 03 er la IOS 22 0U 1 oS B 10 03 wets 15 l 10 03 ee enMi Ose LAO eeiee LOS 2st C wideos C4 Spatial Tests Indeo 4p5 par Analysed with Licence Mark CRS Debug ALL foom ITU Movie File V3 0 10 Scene Changes Japanese NAB Analysis only When analysing under Japanese NAB guidelines it is possible for the flash risk trace to go into failure while the diagnostic trace is still in the caution zone see image This can occur if one of the transitions in the most recent second is classified as a scene change see bottom entry of the Advanced Information tab where 80 of the image has seen a significant luminance transition of 2OIRE units or more When this occurs the maximum allowable number of transitions is reduced from
31. of 55 Cambridge Research Systems Ltd 1020620418 R00 0 0 L334 ka i Red Flash W J Spata Patterns M Luminance Flash W 4 a Extended Faire W Version 2 5 FA it PF Jy rs PASS a i boool ell p as wi in 10 0604 18 PDO 4 0 0 L233 hel aT Luminance Flash i J Red Flash E Spatial Patterns W 7 piae tended Faure W Version 3 FAIL PASS 3 aoa ht However the results between the two versions will not be identical The Version 3 algorithms will in general be more slightly more lenient to complex rapid motion Page 12 of 55 Cambridge Research Systems Ltd ery dingkPA Virwnr O1 13 51 16 RDO SO Lo ba 1 Luminance Flash W Rad Pash W v3 Spata Patterns W Extended Faire W 01 13 51 16 RDO SOOL 34 510 Luminance Fash i Red Fash W 2 5 a Patterns W RES EEN PE 4 Ea ig 3 TAN is but more strict to examples of powerful localised flashing Page 13 of 55 Cambridge Research Systems Ltd Harding PA Viewer Pie Yew Results fel Drach Denis fT p JOa r a v2 57 2 p l C1 oe A F i F T w ff Y Fadl Most importantly of all the Version 3 algorithms have been designed to be as format agnostic as possible Changes in file formats or codecs will alter the underlying video data even if these changes are not visually apparent Here the same video has been encoded at the same resoluti
32. on using two different codecs The absolute differences between the two images are shown in the third image as deviations from mid grey DVC PRO DY PAL Difference Image Page 14 of 55 Cambridge Research Systems Ltd Diference Image The Version 3 algorithms generate highly consistent results from different image resolutions and frame rates Here the same movie has been analysed in 720x576i50 and 640x480i60 formats The only noticeable difference is in the horizontal graph scale due to the different frame rates LN z5 i 720x576i50 EEE a Mi Ne p atia Pithennes Ml oe eee sae k ia UPTS S The graph below shows three sets of luminance flash risk results of the same movie analysed in SD 5 6150 HD 720p50 and HD 1080i50 formats and highlights the considerable similarities in the results Page 15 of 55 Cambridge Research Systems Ltd ame 5 6150 qe HD 1080i50 HD 720p50 Page 16 of 55 Cambridge Research Systems Ltd SD Legacy Mode The HardingFPA has a version 2 5 legacy analysis option for when comparisons with earlier HardingFPA analyses are necessary i e those that have come from versions 1 x of the HardingFPA X and to have some level of compatibility with HardingFPA V2 5x SD SDI Standalone tape based systems If this has been enabled it will be apparent in both the results graph interface and the generated PDF certificate see below 10 01 26 10 P00 5 0 0L 0 0 Id o
33. options purchased Results The Results Settings allow the settings to be modified for the generated results files and other results related options Analysis Results Storage PAP PAR PAM PDF Report Settings al Always save PAP PAR results z J Include failures and warnings XML Report Settings Detailed Results P Do not create report m Show Frame Thumbnails Double Click on Completed Job Options SS Enable Submit to view jobs from all users E View PDF all Automatically open Viewer when job starts analysing ZK Page 26 of 55 Cambridge Research Systems Ltd Analysis Results Storage This is the default setting for when to create HardingFPA Results files PAP PAR and PAM XML Report Settings This is the default setting for when to create XML Results files PDF Report Settings This is the default setting for when to create PDF Reports and what detail to include in them The Double Click on Completed Job setting defines what you would like to happen when you double click on a completed job in the Completed Jobs tab The Options section features the options Enable Submit to view jobs from all users which must be checked in order to allow the application to show jobs from other users in both the Job Queue and Completed Jobs tabs If this is not checked or has not been checked by your administrator then you will only be able to view jobs that were submitted using Submit on the computer and user nam
34. quent failure Saving a Selection It is possible to save the marked selection of results as a separate set of files in order to make transferring them easier Set marker positions by either right clicking on the graph or pressing the Page Up and Page Down keys or by clicking on Set Results Start and Set Results End in the Results menu View Deck Controls Frame Mask Results Tools Help S Open Previous Results Ctrl O0 s Open a New Video Source Ctrl A af Calibrate Analogue Source Ctrl L E save Results E Save Results As J HardingFPA Certificate p AE save Selection As Save Results As CSV Exit Alt Fa _ In the File gt Save Results menu the Save Selection As item can be found Click this and the following screen appears allowing the selected region to be saved Page 41 of 55 Cambridge Research Systems Ltd Save Results As Include images Some Images No Images seconds before and after Failures Some Images All Images Only if material Fails Images can be saved a configurable number of seconds around failures and images can be omitted if the material passes by checking the box Only if material fails Note however that if the currently loaded results set does not have all images then selecting All Images will only be able to save images where they exist on the currently loaded results Interpreting Results It is important to note that materia
35. rlaced and the frame or field rate per second For example a 5 6i60 video standard denotes 576 video lines with interlaced fields at 60 fields per second whereas 576p30 denotes 576 video lines with progressive frames at 30 frames per second A frame represents a whole video image whereas a field represents even or odd lines in a video image Video Scan This will be blank if the video is progressively scanned or will state upper or lower field first if the video is interlaced The HardingFPA will state assumed upper or lower field first if the video field order flags were not detected or not present The assumed field order is derived from default field orders for the specified video standard Frame Dimensions This represents the width and height of the video picture in pixels Please note that all video feeds are resized and analysed in 16 9 format regardless of input video dimensions Active Area Shows which area of the frame was analysed to generate the results Summary of Results This summarises the number of failed frames according to Red flash Spatial pattern and Luminance flash analysis plus a log of extended failures The latter occurs when flash analysis persists close to failure for several seconds The HardingFPA will only generate a pass if there are no failed frames in any category Analysis Results Pages Page 31 of 55 Cambridge Research Systems Ltd Detailed Table of Results Indicating V
36. ry Advanced Information 6 08 L006 36 1010 0636 11 1006 36012 10 06 6 6014 10006036 15 10 0A 16 O06 3617 10 06 9618 H gi TA E 2 83 ar Hi gi AET E TE E g F E Capture 12 02 2010 10 13 20 Analysed with Licence Tristan Linnell DENG Ofcom TU Decklink SDI 3 0 4 Transition count light green trace increased without an obvious transition 5 A flash clearly occurred but the diagnostic trace didn t increase The diagnostic trace shows the number of transitions seen in the last second of material and transitions older than that will be discarded This means that the diagnostic count may not always coincide with an obvious flash For example a visible transition in an image may not lead to a higher transition count if the pixels that see the transition are not part of the most active 25 Page 46 of 55 Cambridge Research Systems Ltd Mardingf FA HU i Franek Ben Di H Bie Donmok oo ih Anas Dus Aand niran n ch dh ch da M ae Ah pire Laia aa Antaidh oree Tiia irn DEMO room I Dadin So a 5 A flash clearly occurred but the diagnostic trace hasn t increased Alternatively an incoming transition may coincide with an outgoing transition from one exactly second earlier When this occurs the new version 3 analyser inserts a squiggle see picture with inset to indicate that the diagnostic trace has simultaneously gained and los
37. t a transition over the most recent second between video frames Page 47 of 55 Cambridge Research Systems Ltd HardingFPA HD E m4 Fle Yew FrameMask Results Tock l 10 03 53 15 R 0 0 0 0 L 2 6 1 6 Luminance Flash W A Red Flash W a patia Patterns W Ext tepded Fake M Analysis Controk Deck Contrat Analysis Summary Advanced Informaton Capture 12 02 2010 10 13 20 Analysed with Licence Tristan Linnell a Ofcom TTY Decklink SDI vag 6 The spatial pattern trace remains in the pass zone even though the detected spatial pattern exceeds contrast and screen area limits A number of limits have to be exceeded before a detected spatial pattern can generate a failure The Advanced Information tab in the example below shows that a spatial pattern has been detected with 50 cd m2 contrast limit 20 cd m2 and covers 46 screen area limit 40 However in this example the system has not generated a failure because motion caused by the camera pan and zoom makes the detected spatial pattern exempt from failure under Ofcom rules Page 48 of 55 Cambridge Research Systems Ltd e4 HardingFPA X Viewer Fie View FrameMask Results Tools Help 10 14 03 23 R00 50 4 L200 r 0 Idi Luminance Flash W Red Flash W Spatial Patterns M Extended Falure W C TMP_FPA Harding PAL Tape Test All Images par Analysed with Licence Tristan Linnell DEMO Ofoon TU Deckl
38. tabase Locations and Results Page 23 of 55 Cambridge Research Systems Ltd Database The Database Settings describe the host name and port of the HardingFPA X database which contains all of the information required for the system to operate including the list of jobs Database Settings Auto Refresh E HostName 1237 001 Interval sec A Host Port 5432 Zo Host Name can be either an IP address or the computer name Please obtain this information from your administrator Host Pot is the port that the database is running on Please obtain this information from your administrator Auto Refresh selects whether you would like Submit to refresh the tables automatically and at what time interval the minimum interval is 5 seconds Page 24 of 55 Cambridge Research Systems Ltd Be aware that if these settings are modified the Submit will need to be restarted for the changes to take effect Additionally if these settings are set incorrectly the Submit may take a longer time than usual to start up as it looks for the database Locations The Locations Settings describe the locations of the movie and results files Locations Locations Root Path Results Folder CA Uesers tristan RS HFPAX Results Temporary Storage Folder CAU sers tri sta n CRS HFP AS Dropbox Optional Movies will be temporarily copied to and analysed from here if they cannot be found in the root path Watch
39. tern is to causing a failure rated in terms of how long the pattern has persisted in the image sequence When running under Ofcom guidelines the HardingFPA will only tolerate illegal spatial patterns to persist for up to half a second any longer than this will lead to a failure Therefore the green yellow and orange colours denote the build up to failure while red represents the actual failure itself Purple is reserved for tiles which are part of the detected Page 40 of 55 Cambridge Research Systems Ltd spatial pattern but whose pattern characteristics lie outside of the allowable range when compared with the rest of the spatial region These purple tiles do not represent persistence and can accompany spatial masks of any colour It is important to note that the HardingFPA only presents mask colours for pixels which will go into failure This allows the editor to focus on the region s of the image which lead to the failure rather than flooding the user with unnecessary information As a result many images will contain no masked coloured pixels even though there may be some flash or pattern activity occurring However all luminance and red flashing activity is exposed in the mask data if an extended flash failure is either occurring or is due to occur wihin the next 5 seconds In addition frame mask activity may suddenly disappear after an isolated failure sequence if the remaining pixel transition activity does not lead to a subse
40. the 7th image shows the end of the subliminal event Example 2 0000 12 10 00 00 11 11 OO 00s 12 12 OO 00 1213 DOO 12 14 OOOO 12 15 LO a a OO 00 12 17 This is a subliminal event because of the inserted picture of a person s head The blue border in the 7th image shows the end of the subliminal event Example 3 OOOO 05 0 O00 05 Oe OO000S oF COO 05 03 i 000S 09 OO 00 05 70 OO 00 05 17 OO 00 05 12 E E CETIM SET EA Wied Chiapa Siei Cbairil Wied Cial EI i TH jul x i F Er 4 mi r r This is a subliminal event because of the inserted text The blue border in the 7th image shows the end of the subliminal event Example 4 OOOO 02 14 00 00 15 OOOO 02 16 OOOO 17 O00 02 0 OO 000227 Page 19 of 55 Cambridge Research Systems Ltd This is not a subliminal event because the inserted images are just the inverse of the preceding and following images and therefore contain no new information Example 5 DOO 1122 OOOO 11S OOOO 1 14 OO 00 12 00 OOOO 31 07 DOO 1202 m A El saber tk ay i E j i This is not a subliminal event because the inserted images contain no information Example 6 This is not a subliminal event because none of the images contain any information Example 7 This is a subliminal event because the inserted images contain information The blue border in the 7th image shows the end of the subliminal event Example 8 OOOO 1 OO O27 T
41. the double click action by selecting the option in the Settings screen The Results Folder setting must be set correctly for this to work Interpreting the PDF Test Certificate Page The following is an example and details may vary Page 29 of 55 Cambridge Research Systems Ltd ie HardingFPA OODE CAMBRIDGE RESEARCH SYSTEMS TEST CERTIFICATE Results of Analysis by Harding FA Flash and Pattern Analyser for Compliance with Ofcom Guidance Note for Licensees on Flashing Images and Regular Patterns in Television Ofcom Code May 2005 Analysis results also comply with ITU R BT 1702 LICENCE NUMBER LICENCE NAME DATE OF ANALYSIS TITLE SUBTITLE EXTRA ASSET NUMBER VIDEO STANDARD VIDEO SCAN FRAME DIMENSIONS DURATION OF MATERIAL TESTED SOURCE TYPE MATERIAL STATUS SUMMARY OF RESULTS Type of Violation Number of Violations Red Flash Ofcom Para 3 Spatial Pattern 2 045 715 700 12 01 2011 11 36 19 PotNoodles dv mov 576150 Interlaced Lower Field First T20 x 5 6 pixels 00 01 02 07 MOVIE FILE FAILED Ofcom Para 5 Luminance Flash Ofcom Para 3 Extended Failure Ofcom Para 2 Failed material should be re analysed in its entirety for compliance after any changes HardingFPA G2 3 2 2 3219 Wina2 QT55 Page 1 of 6 Cambridge Research Systems Ltd Video Standard This summarises the number of video lines whether the video is progressively scanned or inte
42. to see the mask overlaid for Frame Mask Results Tools Ho Mask al Luminance Flash Mask Red Flash Mask Spatial Pattern Mask When any of the frame masks are chosen from this box the images will change and the mask will be overlaid onto a darkened black and white monochrome version of the original frame image A frame will appear around the image to depict the currently selected mask An example is shown below The colours represent the number of transitions which each pixel has experienced in the most recent second after allowing for motion The analyser will issue a failure when more than one quarter of the image contains red or purple pixels The same colour coding shown below is used for both luminance and red flash analysis Pixel Colour Number of Transitions Page 39 of 55 Cambridge Research Systems Ltd The spatial pattern mask data logs the activity which exceeds the spatial guideline limits as shown below 01 O20 Te The mask data appears as a set of uniformly coloured tiles in the image which represent how long they have persisted in the image sequence Spatial mask data only appears for stationary regular patterns which lead to failure Any spatial patterns which drift or are not regular or do not persist in the video long enough to trigger a failure are excluded no regular stationary pattern present green 0 to 1 6 second The actual colours used represent how close the spatial pat
43. ty to play back the images in various ways Start Replay Starts playback in real time from the current position Stop Replay Stops all playback Replay one second before and after cursor Animate the images for one second before and one second after the current cursor position whilst leaving the graph positioned at the current cursor position This is especially useful when you are looking for the causes of a particular failure and need to look at the graph in detail and yet still see the offending section being played back Replay marked region Replays from the Start marker to the End Marker Set marker positions by either right clicking on the graph or pressing the Page Up and Page Down keys or by clicking on Set Results Start and Set Results End in this menu In all playback modes the playback will loop when reaching the end after a small pause The playback can be stopped at any time with the Stop Playback menu item or button by clicking anywhere on the graph by dragging the seek slider or by opening a new file Page 54 of 55 Cambridge Research Systems Ltd Licence Terms This HardingFPA product utilises icons from the Silk icon set at http www famfamfam com lab icons silk and the Fat Cow icon set at http www fatcow com free icons Page 55 of 55
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