对最大的连通区域依次进行膨胀，闭操作，填充空穴得到脑模板，再将原图和脑模板相乘得到脑组织图像；对距离函数取反，然后进行分水岭操作，显示每一个连通区域；对合并之后的连通区域进行闭操作去除分水线，然后将里面的空洞进行填充，再将其膨胀，减去填充后的模板便可得到各个结构的轮廓线-The maximum connected region sequentially inflated closing operation, fill the hole to give the brain a template, and then multiplying the original template and brain brain image　a function of distance, then inverts watershed operation, displaying each connected region　after the merger of regional connectivity will be closing operation to remove the dividing line, and then the inside of the cavity is filled, then it expands, the template can be obtained by subtracting the filled contour of each structure