US Patent 7336297 Camera-linked surveillance system

The surveillance system is configured of multi-camera including rotating cameras controllable for panning, tilting and zooming in and out, intruding object recognizing means for processing image signals from the rotating cameras and keeping track of a position of the intruding object, camera function determining means for allocating a tracking function to a first camera whose field of view is in a predetermined direction of the object of monitoring according to a state of the object of monitoring and allocating a wide angle shooting function for shooting a monitored space in a wide angle to a second camera, and camera control means for controlling the multi-camera according to actions of the camera function determining means.