i-LIDS

imagery Library for Intelligent Detection Systems

Luke SandsLuke Sands

Scientific

Development Branch

IntroductionIntroduction

Who are HOSDB?Who are HOSDB?

i-LIDS projecti-LIDS project

Video Evidence AnalysisVideo Evidence Analysis

QuestionsQuestions

Scientific

Development Branch

HOSDB

Home Office Scientific Development Branch

Impartial technical advice, support and evaluation for the UK Police and Government

Detection and Vision Systems Group

Scientific

Development Branch

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

Scientific

Development Branch

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

Scientific

Development Branch

Chosen Scenarios

Sterile zone or perimeter monitoring

Parked vehicle detection

Abandoned baggage detection

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

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

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 thatshould 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:

System training set

System testing set

One private HOSDB set:

In-house system evaluation set

Three similar i-LIDS sets of the four scenarios

Scientific

Development Branch

i-LIDS Structure

VITAL

Public Set:System Training

Public Set:System Testing

Private Set:System Evaluation

Four Scenarios

Alarm Sequences

Non-Alarm Sequences

i-LIDS

Scientific

Development Branch

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

Scientific

Development Branch

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

Scientific

Development Branch

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

Scientific

Development Branch

Police Automatic Picture Analysis Police Automatic Picture Analysis (PAPA)(PAPA)

Huge volume of video evidence associated with Huge volume of video evidence associated with major investigations major investigations

Can come in a variety of forms, e.g.Can come in a variety of forms, e.g.

Analogue multiplexed videotapesAnalogue multiplexed videotapes

Timelapse Timelapse

DVDs/CDsDVDs/CDs

Need to extract useful informationNeed to extract useful information

Can technology help?Can technology help?

Scientific

Development Branch

PAPAPAPA

Two stage processTwo stage process

Video handling Video handling

Automatic Analysis Tools (AATs)Automatic Analysis Tools (AATs)

Demonstrator for video handling developedDemonstrator for video handling developed

Currently undergoing assessmentCurrently undergoing assessment

Implement AATsImplement AATs

Have conducted brief literary reviewHave conducted brief literary review

Looking to test? Looking to test?

Any Questions?