说明：  分水岭分割方法，是一种基于拓扑理论的数学形态学的分割方法，其基本思想是把图像看作是测地学上的拓扑地貌，图像中每一点像素的灰度值表示该点的海拔高度，每一个局部极小值及其影响区域称为集水盆，而集水盆的边界界则形成分水岭。分水岭的概念和形成可以通过模拟浸入过程来说明。在每一个局部极小值表面，刺穿一个小孔，然后把整个模型慢慢浸入水中，随着浸入的加深，每一个局部极小值的影响域慢慢向外扩展，在两个集水盆汇合处构
(Watershed segmentation method segmentation method is based on the topological theory of mathematical morphology, the basic idea is to image as geodesy topological landscape, the gray value of each pixel in the image represents the point of altitude, each local minimum and its area of ​ ​ influence known as the catchment basins, the boundaries of catchment basins community formed the watershed. The concept and formation of the watershed can be simulated immersion process instructions. Pierce a small hole in each local minimum surface, then the model is slowly immersed in water, immersed in the deepening influence domain of each local minimum slowly outward expansion, and in two catchment basin confluence of the structure)