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DOTS: Support for Effective Video Surveillance

Andreas Girgensohn FX Palo Alto Laboratory, Inc.
Don Kimber same as above
Jim Vaughan same as above
Tao Yang same as above
Frank Shipman same as above
Thea Turner same as above
Eleanor Rieffel same as above
Lynn Wilcox same as above
Francine Chen same as above
Tony Dunnigan same as above

DOTS (Dynamic Object Tracking System) is an indoor, real-time, multi-camera surveillance system, deployed in a real office setting. DOTS combines video analysis and user interface components to enable security personnel to effectively monitor views of interest and to perform tasks such as tracking a person. The video analysis component performs feature-level foreground segmentation with reliable results even under complex conditions. It incorporates an efficient greedy-search approach for tracking multiple people through occlusion and combines results from individual cameras into multi-camera trajectories. The user interface draws the users' attention to important events that are indexed for easy reference. Different views within the user interface provide spatial information for easier navigation. DOTS, with over twenty video cameras installed in hallways and other public spaces in our office building, has been in constant use for a year. Our experiences led to many changes that improved performance in all system components.

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