K-D树源码，不错的空间查找算法，在三维重建和匹配中应用较多！-KD tree source, good space search algorithm, in the three-dimensional reconstruction and matching the application of more!

一个高效的k-d tree实现，可以广泛的应用与图形图像处理。-K nearest neighbor search based on KD-tree

k-d树是一种分割k维数据空间的数据结构。主要应用于多维空间关键数据的搜索-kd tree is a k-dimensional data structure segmentation data space. Mainly used in multi-dimensional space-critical data search