i-LIDS

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(No Transcript)
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i-LIDS

• imagery Library for Intelligent Detection Systems
• Luke Sands

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Introduction

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

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HOSDB

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

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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

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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

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Chosen Scenarios

• Sterile zone or perimeter monitoring
• Parked vehicle detection
• Abandoned baggage detection
• Doorway surveillance and monitoring

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Consultation and trials
The i-LIDS specification generated through
consultations with

• ? Academia
• ? Industry
• Government and Police users

VMD trials have helped develop the specification
for the library content
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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

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Content example
Test imagery weighted towards the boundaries the
capability of VBD systems and the user
operational requirements
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Scenario Contents
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Sterile Zone Monitoring
A typical event alarm test sequence filmed at
HOSDB premises
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Doorway Monitoring
A typical event alarm test sequence captured
from a CCTV camera on site
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Parked Vehicle Detection
A typical non-event alarm test sequence
captured from a town center CCTV camera
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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

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i-LIDS Structure
i-LIDS
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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

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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

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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

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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?

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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?

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Any Questions?
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