li等人的方法存在些不足：对初始曲线的位置有严格的要求，这个方法的演化速度是一个确定值，使得分割速度不能自适应的改变，并且不好确定一个具体值，使其在保证演化速度的同时防止边缘泄露。-Li and others method exists some deficiencies: there are strict requirements to the position of the initial curve, the evolution speed of this method is a determine value and makes the segmentation speed can not adaptive to change, and not determine a specific value, make it on the edge of the guarantee the evolution speed and prevent leakage.