中文说明：八叉树结构是四叉树结构在三维上的拓展，相当于一种数据压缩结构。主要在地理信息系统（GIS）和测绘中使用，比如激光点云数据的压缩处理，以减少激光点云的处理数据量。也可用于离散点数据的组织，希望对大家有用。
English Description：
Octree structure is an extension of quadtree structure in three dimensions, which is equivalent to a data compression structure. It is mainly used in geographic information system (GIS) and surveying and mapping, such as the compression of laser point cloud data, in order to reduce the amount of laser point cloud processing data. Can also be used for the organization of discrete point data, hope to be useful to you.