通过点云数据的格网化，建立格网分块索引，这是一种有效的点云数据存储方式。- Through the point cloud data grid , the establishment of a grid block index, which is a valid point cloud data storage.

实现读取xyz格式点云文件，且对点云进行格网化，便于后续数据处理(realize the reading of xyz file, and put he points into grid for later data process)

摄影测量点云，三维激光点云进行点云特征图像提取进行格网化代码(Photogrammetric point cloud, 3D laser point cloud, point cloud feature image extraction for grid code)