i-LIDS i magery L ibrary for I ntelligent D etection S ystems Luke Sands

Scientific Development BranchIntroduction l Who are HOSDB? l i-LIDS project l Video Evidence Analysis l Questions

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

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

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

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

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

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 years

Scientific Development Branch Content example Test imagery weighted towards the boundaries the capability of VBD systems and the user operational requirements

Scientific Development Branch Scenario Contents Event alarms that should be detected Non-event alarms that should be ignored

Scientific Development Branch Sterile Zone Monitoring A typical ‘event alarm’ test sequence filmed at HOSDB premises

Scientific Development Branch Doorway Monitoring A typical ‘event alarm’ test sequence captured from a CCTV camera on site

Scientific Development Branch Parked Vehicle Detection A typical ‘non-event alarm’ test sequence captured from a town center CCTV camera

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

Scientific Development Branch i-LIDS Structure i-LIDS

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

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

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

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?

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?

Any Questions?