HardingFPA-X User`s Manual
Contents
1. CAMBRIDGE RESEARCH SYSTEMS The HardingFPA X User s Manual Version 2 0 1 Cambridge Research Systems Ltd www hardingfpa tv Help ensure video is safe to watch for both diagnosed and dormant photosensitive epileptics 2010 Cambridge Research Systems Ltd Contact Details Manufactured by Cambridge Research Systems Ltd 80 Riverside Estate Sir Thomas Longley Road Rochester Kent ME2 4BH England Tel 44 0 1634 720707 Fax 44 0 1634 720719 email sales hardingfpa com Website www hardingfpa tv Available in J apan from Namoto Trading Co Ltd 1 44 1 Minami ono Ichikawa CHIBA 272 0804 Japan Tel 81 47 338 3224 Fax 81 47 338 3236 email mid namoto com Website www namoto com Project Medical Consultant Professor Graham Harding Applicable Version This manual is applicable to the HardingFPA X version 2 0 1 17th May 2010 Document Revision 13th May 2010 Page 2 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd Table of Contents Overview 5 Licensing 6 Version 3 Analysis Algorithms 7 SD Legacy Mode 12 HardingFPA X Submit 13 Settings 14 User Interface 16 Submitting Jobs 18 Viewing Results 19 HardingFPA X Viewer 20 The Main Screen 21 The View Menu 23 Analysis Information 24 Frame Masks 27 Interpreting Results 30 The Results Menu 39 Licence Terms 40 Page 3 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd Page 4 HardingFPA X2. to aid in the repair of failing seguences 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 to see the mask overlaid for Frame Mask Results Tools e No Mask 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 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 one HardingFPA X User s Manual Page 27 2010 Cambridge Research Systems Ltd purple 9 or more The spatial pattern mask data logs the activity which exceeds the spatial guideline limits as shown below 01 01 2002 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
3. 03 23 19 30 62436 the_mask_test 1 mov i 2010 03 24 05 17 62806 the_mask_test 1 mov Status passed 2010 03 24 09 47 62865 the_mask_test 1 mov 2010 03 23 18 56 62417 the_mask_test 1 mov Date Complete 24 03 2010 02 42 02 _ 2010 03 24 04 26 62774 the_mask_test 1 mov 2010 03 24 23 22 63044 the_mask_test 1 mov Frename _ 2010 03 24 01 58 62683 the_mask_test 1 mov HFPA X Busy the_mask_test 1 mov 2010 03 24 04 54 62793 the_mask_test 1 mov _ 2010 03 25 02 43 63134 the_mask_test 1 mov _ 2010 03 24 05 47 62826 the_mask_test 1 mov _ 2010 03 23 22 22 62547 the_mask_test 1 mov el 2010 03 23 17 55 62378 the_mask_test 1 mov 2010 03 23 21 19 62507 the_mask_test 1 mov E V Show jobs submitted by all users ETA to next job 01 32 44 The Completed Jobs tab on HardingFPA X Submit Page 17 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd Submitting Jobs In order to submit a new job click on the Submit Movies button A Submit Movies dialogue will appear as shown below From this you may browse to the file s you wish to submit as jobs Multiple file selection is supported The movie file s you choose must be able to be accessed by the Analyser s in the system and therefore should be in a subfolder of your Root Path 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 you
4. frame Failed 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 Page 21 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd HardingF PA X Viewer Ble Yew Frame Mask Resuts Tools Help 1003 05 20 R 0 0 50 1 L 0 0 kd 1 Luminance Flash I Red Fh W Spaia Patterns i Extended Faire W Analyses Summary Advanced Information Ofcom ITU Movie File V3 0 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 To the right of this scroll bar there are two buttons which will move the cursor to the next or previous failure Page 22 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd The View Menu File Results Help Q Zoom In Fi Q Zoom Out F2 2 Hide Diagnostics F5 246 Show Caution Band Ctrl U The Viewer s View menu 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 grap
5. 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 m 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 Page 30 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd 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 HardingFPA HD Ele Vew FrameMask Results Tools Hep 10 04 08 09 0 0 S9 0L 0 4 uminance Flash W Red Flach W Spatial Patterns E Extended Falre W Current Source More Analysis Summary Advanced Informaton Capture 12 02 2010 10 13 20 Analysed with Licence Tristan Linnell DEMO Ofcom ITU Deckirk SDI V3 0 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 2 Long sequence of flashing that eventually led to an Extended Flash Failure 3 The flash risk trac
6. your administrator has enabled this it will be apparent in both the Viewer interface and the generated PDF certificate see below 10 01 26 10 R 0 0 5 0 0 L 0 0 d Luminance Flash il Red Flash BW Spatial Patterns I Extended Failure I L Jebel 3 r Er ee HardingFPA BBE broadcast flash amp pattern analyser E sem DE 2am spe aBn 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 2 045 715 700 Page 12 Harding FPA X User s Manual 2010 Cambridge Research Systems Ltd HardingFPA X Submit The HardingFPA X Submit is essentially 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 appropriate software for results viewing Page 13 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd Settings 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 click
7. 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 Annere ed BR f F coana Paters Extandad Faire E left Version 2 and right Version 3 Graphing The Squiggle Page 7 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd The HardingFPA X gives enhanced visual diagnostics when an incoming transition coincides with an outgoing transition from one exactly second earlier The new 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 HD Ee Yew Frame Mask Results Toots Luminance Flash W Red Flash M Gpsn Patterns W Extended Faire W Current Source Mone Analysis Summary Advanced Informanon Capture 12 02 2010 10 13 20 Analysed with Licence Tristan Linnal DEMO Ofcom ITU Deckiink SDi V3 0 Analysis Results The HardingFPA X gives 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 8 HardingFPA X
8. User s Manual 2010 Cambridge Research Systems Ltd 10 09 04 18 R 0 0 0 0L 3 4 HS Red Flash W Spata Patterns M Luminance Flash W Extended Faire W Version 2 5 10 09 04 18 R 00S 00U33 Ha Luminance Flash W Red Flash ill Spata Patterns W xtended Faire W Version 3 Ee V J Ze LW However the results between the two versions will not be identical The HardingFPA X will in general be more lenient to complex rapid motion HardingFPA X Viewer 01 13 51 16 R 0 0 0 0L 0 0 l Luminance Flash W Red Flash W V 3 Spana Patterru W Extended Faire W Graph Controla 01 13 51 16 R 0 05 0 0L 34 j em Luminance Flash W f Red Flash W v2 5 f Spata Patterns W Extended Faire W Li E ees es NZ En pend T EA E E but more strict to examples of powerful localised flashing Page 9 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd HardingFPA X Viewer De Yew Resuts tep POWER Graph Controls v 2 57 WER rower POWER ROWER POWER OWE poi we POWER Eu L H up Most importantly of all the HardingFPA X has 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 resolution using two different codecs The absolute differences between the t
9. User s Manual 2010 Cambridge Research Systems Ltd Overview The HardingFPA X System is a distributed version of the standalone 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 X Viewer These can be found in Applications gt HFPA X on Mac 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 which analyse the material and write out results files which may then be viewed using the HardingFPA X Viewer This manual covers both the Mac OS X and Windows versions of the HardingFPA X Submit and HardingFPA X Viewer which operate in an identica
10. ail 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 39 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd Licence Terms HardingFPA X Client applications use the Silk icon set from http www famfamfam com lab icons silk Page 40 HardingFPA X User s Manual Jose CAMBRIDGE RESEARCH SYSTEMS Cambridge Research Systems Ltd 2010 Cambridge Research Systems Ltd 80 Riverside Sir Thomas Longley Road Rochester Kent ME2 4BH UK Tel 44 0 1634 720707 Fax 44 0 1634 720719 email sales hardingfpa com www hardingfpa tv www crsltd com
11. cond 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 32 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd HardingFPA HD Ele Wew FrameMask Results Toos Hep 10 06 36 16 R 0 0S1 0L 0 4 Luminance Flash U Red Flash I Spatial Patterns M Extended Fake W Arem Controis b a Current Source None Analysis Summary Advanced Informaton Capture 12 02 2010 10 13 20 analysed with Licence Tristan Lnnel DEMO Ofcom ITU Deckirk SDI V3 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 33 HardingFPA X User s Manual 2010 Cambr
12. e 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 31 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd HardingFPA HD Ele Wew FrameMask Results Toos Hep 10 00 31 19 RO00S0 0L 24 ids M Luminance Flash W Red Flash I Spatial Patterns I Extended Falure W Angtyss Controis Deck Controls Q a Current Source None A Analysis Summary Advanced Informaton Capture 12 02 2010 10 13 20 Analysed with Licence Tristan Lnnel DEMO Ofcom ITU Deckirk SDI V3 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 se
13. e settings are set incorrectly the Submit may take a longer time than usual to start up as it looks for the database Here it is also possible to choose whether you would like Submit to refresh the tables automatically and at what time interval the minimum interval is 5 seconds The Options section features one further option Enable Submit to view jobs from all users which must Page 14 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd 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 name combination that you are currently logged in as 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 Page 15 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd 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
14. ected spatial pattern exempt from failure under Ofcom rules HardingFPA X Viewer Ele Yew Frame back Resis Tools Heb 10 14 03 23 R 0 0 41 0 0 Ki Luminance Flash W Red Flash i Spatial Patterns M Extended Falure W Red Digqnosti TIMP_FPA Harding PAL Tape Test Al Images par Analysed with Licence Tristan Linnel DEMO Ofcom ITU Deckink SDI V3 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 35 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd HardingFPA X Viewer Ele Yew Frame bah Resis Toots Heb 1006 32 04 ROOSOOL O4 l Luminance Flash W Red Flash NW Spatial Pattern it Extended Faire W e ATMP_FPAHardng PAL Tape Test Al Images par Analysed with Licence Tristan Linnel DEMO Ofcom ITU Deckink SDI V3 0 8 The system passes a stationary pattern that looks as though i
15. exact order If jobs appear 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 If the setting is configured in the settings screen you may click Show jobs submitted by all users 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 HardingFPA X 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 a new job into the job queue Page 16 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd HardingFPA X Submit Job Information Job ID 62709 _ 2010 03 25 02 59 63140 the_mask_test 1 mov __ 2010 03 25 03 45 63160 the_mask_test 1 mov Job Name the_mask_test 1 mov _ 2010
16. ge 38 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd 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 BETA o Help gt Advance to Next Failure Go Back to Previous Failure IM Set Results Start PgUp DI Set Results End PgDn Clear Results Markers Del gt Start Replay Ctrl P amp Replay One Second Before and After Cursor cCtrl R TD Replay Marked Region of Images Ctrl I Stop Replay The Viewer s Results menu Advance to Next Failure and Go Back to Previous Failure will perform the same action as the seek right and seek left arrow buttons on the bottom right corner of the screen taking the cursor position to the next or previous failure area The following menu items provide the ability 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 det
17. h or by pressing F1 and F2 Page 23 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd 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 Analysis Summary Advanced Information Viewing Saved Analysis Saved Analysis 576i50 62326_Exte ence_DV_PAL par 10 06 08 11 00 06 06 12 00 06 08 12 Failures gt 0 5 1804 OE P The Analysis Summary tab 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 Red Flash The number of frames that exceed the test guidelines fo
18. idge Research Systems Ltd M HardingFPA HD Crew Serre fone Andy Dm Advanced F mmen Capture 12 02 2090 1008320 Anatesed wth Licence Tristan Unna DEMO Okom TU Deckink SOE V3 0 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 lost a transition over the most recent second between video frames HardingFPA HD 10 03 53 15 R00 0 0L 2 6 Luminance Rash I Red Flash B gpatal Patterns W Extanded Faire W A Deck Controls Current Source None Analysis Summary Advanced Information Capture 12 02 2010 10 13 20 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd 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 m 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 det
19. 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 average 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 Page 25 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd Spatial Pattern Guidelines Page 26 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd Frame Masks The HardingFPA X includes 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 seguence
20. ing Tools gt Settings and is shown below A9 Settings Location Settings Double Click on Completed Job Root Path CH View Results LF Results Folder C Results O View PDF Database Settings JAuto Refresh Host Name 127 0 0 1 Interval sec we Host Port 5432 Options SP Enable Submit to view jobs from all users The HardingFPA X Submit settings screen The meaning of these settings is given below 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 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 The Host Name can be either an IP address or the computer name Please obtain this information from your administrator Be aware that if these settings are modified the Submit will need to be restarted for the changes to take effect Additionally if thes
21. l manner Page 5 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd Licensing Your computer must be licensed to run the HardingFPA X Client applications by your administrator using the HardingFPA X Licence Server If you are not licensed you will see the following error dialogue box Teac Licence Server not found Licence Server could not be found Please contact your administrator E Specify Server Location _ Automatically locate Licence Server Specify Licence Server hostname IP address newserver Quit Co gt From this dialogue box you may specify the location of the server manually if it can not be found automatically Please see your administrator for more information Page 6 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd Version 3 Analysis Algorithms If your system is running HardingFPA X Analyser Version 2 0 0 or above the analysis now features new analysis algorithms which are better tuned to High Definition and File based work They are better suited to 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 new ones are detailed below Differences Between v2 5 and v3 0 Different Graph Scaling The HardingFPA X generates risk values using the same range as its predecessor i e O to
22. nsition activity does not lead to a subsequent failure Page 29 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd It is important to note that when comparing results between material re encoded at a different frame rate then the number of failed frames will differ and the results may differ as a result of the extra 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 m 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 HardingFPA HD Ele Wew FrameMask Results Tools Hep 10 03 54 2 R 0 0 3 0L 0 0 z L Luminance Flach W Red Flash W s Spatial Patterns a Extended Falure W Anayss Controls Deck Controls Advanced Information Capture 12 02 2010 10 13 20 Analysed with Licence Tristan Lnnel DEMO Ofcom ITU Deckink SDI V3 0 1 Showing a flash but no flash risk trace 2 The flash risk trace dark
23. or are not regular or do not persist in the video long enough to trigger a failure are excluded The actual colours used represent how close the spatial pattern 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 X analyser 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 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 X 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 Page 28 Harding FPA X User s Manual 2010 Cambridge Research Systems Ltd occurring In addition frame mask activity may suddenly disappear after an isolated failure sequence if the remaining pixel tra
24. owever it is highly unlikely that any of these scenes would actually lead to a spatial pattern failure HardingFPA X Viewer Ele Yew FramelMask Rests Toots Help 10 03 22 21 R 0 0 0 31 0 0 Luminance Flash W Red Flash W Spatial Patterns W Extended Falure U z 4 gt C Videos C4 Spatial Tests Indeo 4p5 par l Analysed with Licence Mark CRS Debug ALL Ofcom ITU Movie Fle V3 0 Page 37 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd 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 T his 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 20IRE units or more When this occurs the maximum allowable number of transitions is reduced from 6 down to 3 and in this example failure took place when the 4th transition was detected 7 HardingF PA HD Ele yew FrameMask Resis Toos Hep 10 00 05 07 R00 5 0 0L09 Lumnance Fash W Red Fish W Spana Patb rn u Extended Faire W Analyss Controls Q A Current Source Movie File Kis ar Analysis Summary Advanced Informaton Analysed with Licence Mark CRS Debug ALL Japan NAB 2006 Movie File V3 0 Pa
25. r administrator A0e Submit Movies d an m e Movies 3 Q search Network p BE Desktop gt 00502_t gress xml A Macintosh HD I 5 Documents 7 00502_t pegl csv NEW FOLDER gt 2 hfpax 00502_t peg1 pdf Junk P indexdata txt 00596 t gress xml Tristan Linnell E Library 7 00596_t peg1 pdf RAIDOO1 iMovie Projects P E Music test mpegl mpg as Desktop 4 Pictures 7 test mpegl pap tristan programs 7 test mpegl par A Applications projects test mpegl xml Documents e Public fi Movies S Sites amp Music 4 software Pictures 4 temo Open Submitting movies in HardingFPA X Submit Page 18 Harding FPA X User s Manual 2010 Cambridge Research Systems Ltd Viewing Results Get RR AE NS 1 s View Results J view PDF RB submit Movies 4 D Refresh The Right click menu for the Completed Jobs tab HardingFPA X Submit Provided a job completed correctly with no errors you may view the results of the 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 the double click action by selecting the option in the Settings screen The Results Folder setting must be se
26. r red flash Spatial Patterns The number of frames that have exceeded the test guidelines for spatial patterns Luminance Flash The number of frames that have exceeded the test guidelines for luminance flash Page 24 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd Extended Failure The number of 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 Analysis Summary Advanced Information 0 transitions 0 0 20 0 125 frames 0 transitions 0 0 20 4 108 20 Mi mm Luminance Diagnostic Luminance Flash 4rea Luminance Flash Contrast Extended Flash Warnings Red Diagnostic Red Flash Area Red Flash Contrast Spatial Pattern Area Spatial Pattern Contrast The Advanced Information tab 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
27. t correctly for this to work Page 19 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd HardingFPA X Viewer The HardingFPA X 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 Page 20 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd The Main Screen The HardingFPA X Viewer screen 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 X Viewer 1 Analysts Summary Advanced Information No Results Loaded The main HardingFPA X Viewer window 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
28. t should have failed Some patterns that are clearly bar like in one direction may also possess some local structure in the orthogonal direction 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 36 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd HardingF PA X Viewer Ele Yew Frame back Resuts Tools Help 1009 55 12 RO00SM 4L00 Luminance Flash W Red Flash W Spatial Patterns H Extended Falure W CATMP FPAHardng PAL Tape Test Al Images par Analysed with Licence Tristan Linnel DEMO Ofcom ITU Decklink 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 video 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 H
29. wo images are shown in the third image as deviations from mid grey Difference Image Difference Image The new 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 with highly Page 10 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd consistent results The only noticeable difference is the different horizontal graph scales as a result of the different frame rates D 10 00 26 02 720x576i50 E 26 k Be P Fah lb R Sne E tter W V r Fairo 640x480i60 800800128 The graph below shows three sets of luminance flash risk results of the same movie analysed in SD 576i50 HD 720p50 and HD 1080i50 formats The results are sufficiently similar it is difficult to see that the graph contains three separate traces 15 SD 576i50 HD 1080i50 HD 720p50 0 5 115 134 153 172 191 210 229 248 267 286 305 324 343 362 381 400 419 438 457 476 Page 11 HardingFPA X User s Manual 2010 Cambridge Research Systems Ltd SD Legacy Mode The HardingFPA X 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
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