Broaddus, C., Germano, T., Vandervalk, N., Divakaran, A., Wu, S., & Sawhney, H. (April 2009). “ACT-Vision Active Collaborative Tracking for Multiple PTZ Cameras,” in Proceedings SPIE Vol. 7345.
We describe a novel scalable approach for the management of a large number of Pan-Tilt-Zoom (PTZ) cameras deployed outdoors for persistent tracking of humans and vehicles, without resorting to the large fields of view of associated static cameras. Our system, Active Collaborative Tracking – Vision (ACT-Vision), is essentially a real-time operating system that can control hundreds of PTZ cameras to ensure uninterrupted tracking of target objects while maintaining image quality and coverage of all targets using a minimal number of sensors. The system ensures the visibility of targets between PTZ cameras by using criteria such as distance from sensor and occlusion.