This paper researches and realizes two algorithms of point clouds segmentation-the direct segmentation method based on planarity and the surface segmentation method based on logarithmic normal vector.

• 摘要主要研究实现了两种车身测量点云数据逆向建模过程中点云分割的算法-基于平面度的直接分割方法和基于对数法矢值的曲面分割方法。