Visual tracking of multiple objects with automatic motion model switching

In this paper we present an efficient contour tracking algorithm which can track 2D silhouettes of multiple objects in extended image sequences captured by a static camera. We represent contours using cubic B-splines, and our tracking algorithm is based on tracking a lower dimensional shape-space. The tracker is coupled with a multiple model filtering algorithm which caters for objects that move with variable motion. The model based technique we provide is capable of tracking rigid and nonrigid object contours with good accuracy