Topologic reconstruction method gets the optimized meshes by reconstructing the umbrella shape of every point and deleting antipathic triangles.This method has wide applied range and quick speed.

• 点集拓扑重建算法是采用局部构造的思想，对每一个点构造它周围的伞形，最后得到整体的三角网格，并对网格中的不相容三角形进行删除，最后得到优化的三角网格，该算法适用范围广，并且速度较快。