Automatic Detection and Tracking of Security Breaches in Airports

摘要

A surveillance system that detects and tracks security breaches in airports is presented. The system consists subsystems with one overhead static and one Pan/Tilt/Zoom (PTZ) camera to first acquire and then follow an intruder who illegally walks into a crowded secure area of an airport. The overhead camera detects the intruder using a motion-based segmentation and an optical flow algorithm. Intruder handover from the overhead camera to the PTZ camera if then performed. A novel approach for intruder handover and feature extraction using color is presented for continuous I tracking with the PTZ camera when the intruder moves out of the view of the overhead camera. We also use a mean: shift filter with a newly designed non-rectangular search window which will be automatically updated to accurately localize the target. Real experimental results from a local airport are given and discussed.