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Published byRandolf Kelly Modified over 9 years ago
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i-LIDS i magery L ibrary for I ntelligent D etection S ystems Luke Sands
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Scientific Development BranchIntroduction l Who are HOSDB? l i-LIDS project l Video Evidence Analysis l Questions
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Scientific Development Branch HOSDB l l Home Office Scientific Development Branch l l Impartial technical advice, support and evaluation for the UK Police and Government l l Detection and Vision Systems Group
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Scientific Development Branch i-LIDS l l Collection of real-world Closed Circuit TeleVision (CCTV) test imagery l l Aim 1: Performance evaluations of Vision- Based Detection Systems (VBDS) l l Aim 2: Imagery for future system and algorithm development
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Scientific Development Branch Background l l VBD systems could help UK Police and Government be more efficient l l Many systems already available l l Performance variation between these systems and the applications l l HOSDB need to quickly assess the suitability of VBDS for typical outdoor applications
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Scientific Development Branch Chosen Scenarios l l Sterile zone or perimeter monitoring l l Parked vehicle detection l l Abandoned baggage detection l l Doorway surveillance and monitoring
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Scientific Development Branch Consultation and trials Academia Industry Government and Police users The i-LIDS specification generated through consultations with: VMD trials have helped develop the specification for the library content
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Scientific Development Branch i-LIDS Content l l Should allow rapid and consistent evaluations l l Representative of 12-months live testing at operational sites l l Contain all plausible variations to calculate an indication of performance for most scenes l l Relevant for development over next 5 - 10 years
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Scientific Development Branch Content example Test imagery weighted towards the boundaries the capability of VBD systems and the user operational requirements
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Scientific Development Branch Scenario Contents Event alarms that should be detected Non-event alarms that should be ignored
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Scientific Development Branch Sterile Zone Monitoring A typical ‘event alarm’ test sequence filmed at HOSDB premises
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Scientific Development Branch Doorway Monitoring A typical ‘event alarm’ test sequence captured from a CCTV camera on site
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Scientific Development Branch Parked Vehicle Detection A typical ‘non-event alarm’ test sequence captured from a town center CCTV camera
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Scientific Development Branch i-LIDS Sets Two public sets: l l System training set l l System testing set One private HOSDB set: l l In-house system evaluation set Three similar i-LIDS sets of the four scenarios
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Scientific Development Branch i-LIDS Structure i-LIDS
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Scientific Development Branch Image Collection l l Imagery taken from standard PAL output CCTV video cameras l l Recorded to portable broadcast quality digital Betacam tape recorders l l Transferred via SDI to PC for editing and tagging l l Simple editing and limited compression to minimise artifacts
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Scientific Development Branch Image Storage l l Test sequences of varying length and complexity l l Accompanied by simple XML ground truth l l Library sets supplied on large HHD and searchable using the XML database l l Master copies held by HOSDB on digital Betacam tapes
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Scientific Development Branch i-LIDS Distribution l l Calibrated imagery accompanied by complete glossary of descriptors l l Available to public in QuickTime Motion JPEG format l l Demonstration samples and updates may be available on DVD or some other means l l A complete 24hr set will be available on hard disc drive
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Scientific Development Branch Police Automatic Picture Analysis (PAPA) l Huge volume of video evidence associated with major investigations l Can come in a variety of forms, e.g. l Analogue multiplexed videotapes l Timelapse l DVDs/CDs l Need to extract useful information l Can technology help?
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Scientific Development BranchPAPA l Two stage process l Video handling l Automatic Analysis Tools (AATs) l Demonstrator for video handling developed l Currently undergoing assessment l Implement AATs l Have conducted brief literary review l Looking to test?
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Any Questions?
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