STANN是轻量级的邻域搜索C++库, 在低维空间性能极为卓越, 特别是3D空间, 比ann-1.1.1好.-STANN is a lightweight thread-safe library for doing Nearest Neighbor searches. It is designed for low dimensional data sets, preferably 3d

进行点云数据处理是需要进行中邻域搜索算法，上传的是K邻域搜索算法-For point cloud data processing is needed in the neighborhood search algorithm, upload the K neighborhood search algorithm