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Visual Surveillance Technologies for Enhancing ABC Secure Zones

Visual Surveillance Technologies for Enhancing ABC Secure Zones. Project: FastPass. Csaba Beleznai, Stephan Veigl, Michael Rauter David Schreiber, Andreas Kriechbaum Video- and Security Technology Safety & Security Department AIT Austrian Institute of Technology GmbH. Motivation.

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Visual Surveillance Technologies for Enhancing ABC Secure Zones

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  1. Visual Surveillance Technologies for Enhancing ABC Secure Zones Project: FastPass Csaba Beleznai, Stephan Veigl, Michael Rauter David Schreiber, Andreas Kriechbaum Video- and Security Technology Safety & Security Department AIT Austrian Institute of Technology GmbH

  2. Motivation • Significantly increasing passenger flows • from 2012 to 2016 +800 million • Border guards face big challenges • in-depth document checks • reliable identity checks • check of entry conditions • discover possible threats

  3. Motivation Issues to be addressed • Exactly one person per passport  Single person detection • Clean secure zone Left object detection • Situation overview  Queue length estimation Video Surveillance in Gate • Reliable detections with 3D stereo video camera Demo eGate: Vienna Airport(Terminal 2, Non-Schengen-Arrivals)

  4. ABC Gates

  5. The Sensor 3D stereo-camera system developed by AIT • Area-based, local-optimizing, correlation-based stereo matching algorithm • Specialized variant of the Census Transform • Video image • Spatial Resolution: 752x480  rectified to 608x328 • RGB • Depth information • 16 bit depth image • USB 2 interface

  6. Camera Set-Up (inside the gate) • Top-view of eGateinterior • ~15 frames per second • Mounting height: 279 cm  depth resolution: ~2 cm • Ground floor 180x60 cm  spatial resolution: ~1 cm

  7. Single Person Detection Motivation / Challenges • Ensure only one person is inside the eGate • reliable detection and counting of persons • multiple persons must not pass! • Real-time processing • low latency • Better than existing system • error-prone to tailgating / piggybacking • number of false alarms • Developed for secure zones

  8. Single Person Detection Method • Head candidates • hypothesis generation  test positions • Classification with head-shoulder model • support-vector-machine filter false hypothesis • Tracking of detections • use door signals to increase robustness

  9. Single Person Detection Examples - single person video 1 - single person.avi

  10. Single Person Detection Examples - multiple persons video 2 - multiple persons.avi

  11. Single Person Detection Examples - closed doors video 3 - closed doors.avi

  12. Left Object Detection Motivation / Challenges • Detect left objects in eGate • eGate has to be empty after person left • visualize left object • Real-time processing • low latency • Difficult object size and / or apperance • small size (e.g. passport) • low contrast (e.g. empty bottle)

  13. Left Object Detection Method • 3D Images • color image • depth information • data fusion • Motion suppression

  14. Left Object Detection Examples - Trolley video 4 - trolley.avi

  15. Left Object Detection Examples - Mobile Phone video 5 – mobile phone.avi

  16. Left Object Detection Examples - Trolley video 6 – bottle.avi

  17. Queue LengthEstimation Motivation / Challenges  4 Min. • Enhanced queue management • number of persons per queue • Visual tracking of queue dynamics • estimated waiting time • Overcome occlusion problems • eliminate top-view requirement (for low ceiling height environments) • use 3D information

  18. Queue Length Estimation Outlook (Method) • Stereo camera (e.g. mounted on eGate) • Detection distance up to 12 meters

  19. Conclusion Stereo Video Surviallance • New dimension of information • Robust and reliable detection under variable situations • Decrease false alarms for • single person detection • left object detection • New options for queue length estimation

  20. Stephan Veigl Video- and Security Technology Safety & Security Department AIT Austrian Institute of Technology GmbH stephan.veigl@ait.ac.at AIT Austrian Institute of Technology your ingenious partner

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