This paper proposes a new method of extracting and tracking a nonrigid object moving while allowing camera movement. For object extraction we first detect an object using watershed segmentation technique and then extract its contour points by a

详细的讲解了Snake参数轮廓演化过程，构建了能量函数!-a modification of the Mumford-Shah functional and its cartoon limit which facilitates the incorporation of statistical prior on the shape of the segmenting contour. By minimizing a single energy functional, we obtain a se