手动获取坐标，snake轮廓检测。所要分割目标的轮廓确定大致的初始轮廓曲线(手动点 出),然后对曲线进行能量最小化变形。-Manually get coordinates, snake contour detection. To split the contours of the target to determine the approximate initial contour curve (manual points out), then the curve deformation ene