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An Active Stereo Vision System for Recognitionof Faces and Related Hand

An active stereo vision system is introduced which is able to detect the face of an arbitrary person in a real world environment. The face is zoomed in and tracked while the person is able to give commands to the system by particular hand gestures. The system is based on a robotically controlled binocular head, of which both cameras can be controlled independently. A control supervisor is established which evaluates all visual information and controls particular jobs or actions based on recently obtained results. The presented system design and implementation allows the detection, the zoom, and the tracking of the face, as well as the detection and evaluation of the hand gestures, to be performed in real-time.