This paper describes the use of a low level, computationally inexpensive motion detector to initiate a higher level motion tracker based on an elliptical active contour or snake. The contour tracker is in turn used to direct a camera mounted on a robot arm. to track head shaped objects.
['Philip H. S. Torr', 'T. Wong', 'David W. Murray', 'Andrew Zisserman']
Cooperating motion processes