i-LIDS

2. i-LIDS imagery Library for Intelligent Detection Systems Luke Sands

3. Introduction • Who are HOSDB? • i-LIDS project • Video Evidence Analysis • Questions

4. HOSDB • Home Office Scientific Development Branch • Impartial technical advice, support and evaluation for the UK Police and Government • Detection and Vision Systems Group

5. i-LIDS • Collection of real-world Closed Circuit TeleVision (CCTV) test imagery • Aim 1: Performance evaluations of Vision-Based Detection Systems (VBDS) • Aim 2: Imagery for future system and algorithm development

6. Background • VBD systems could help UK Police and Government be more efficient • Many systems already available • Performance variation between these systems and the applications • HOSDB need to quickly assess the suitability of VBDS for typical outdoor applications

7. Chosen Scenarios • Sterile zone or perimeter monitoring • Parked vehicle detection • Abandoned baggage detection • Doorway surveillance and monitoring

8. Consultation and trials The i-LIDS specification generated through consultations with:  Academia Industry • GovernmentandPoliceusers VMD trials have helped develop the specification for the library content

9. i-LIDS Content • Should allow rapid and consistent evaluations • Representative of 12-months live testing at operational sites • Contain all plausible variations to calculate an indication of performance for most scenes • Relevant for development over next 5 - 10 years

10. Content example Test imagery weighted towards the boundaries the capability of VBD systems and the user operational requirements

11. Event alarms that should be detected Non-event alarms that should be ignored Scenario Contents

12. Sterile Zone Monitoring A typical ‘event alarm’ test sequence filmed at HOSDB premises

13. Doorway Monitoring A typical ‘event alarm’ test sequence captured from a CCTV camera on site

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

15. i-LIDS Sets Three similar i-LIDS sets of the four scenarios Two public sets: • System training set • System testing set One private HOSDB set: • In-house system evaluation set

16. i-LIDS Structure i-LIDS

17. Image Collection • Imagery taken from standard PAL output CCTV video cameras • Recorded to portable broadcast quality digital Betacam tape recorders • Transferred via SDI to PC for editing and tagging • Simple editing and limited compression to minimise artifacts

18. Image Storage • Test sequences of varying length and complexity • Accompanied by simple XML ground truth • Library sets supplied on large HHD and searchable using the XML database • Master copies held by HOSDB on digital Betacam tapes

19. i-LIDS Distribution • Calibrated imagery accompanied by complete glossary of descriptors • Available to public in QuickTime Motion JPEG format • Demonstration samples and updates may be available on DVD or some other means • A complete 24hr set will be available on hard disc drive

20. Police Automatic Picture Analysis (PAPA) • Huge volume of video evidence associated with major investigations • Can come in a variety of forms, e.g. • Analogue multiplexed videotapes • Timelapse • DVDs/CDs • Need to extract useful information • Can technology help?

21. PAPA • Two stage process • Video handling • Automatic Analysis Tools (AATs) • Demonstrator for video handling developed • Currently undergoing assessment • Implement AATs • Have conducted brief literary review • Looking to test?

22. Any Questions?