说明：  讨论了有关散乱点云的取样及三角网络化模型的实现 并提出了一种高效率的点云提取方法 最后就基于被提取点生成三角网络模型进行了探讨
(Discussed the scattered point cloud sampling and triangulation network and proposed a model to achieve an efficient point cloud extraction method to extract the last point to be generated based on the triangular network model discussed)