关键词: 位姿特征, 点云, 匹配, 逆向工程, 计算机辅助设计

Abstract: Aiming at the matching problem of point cloud data in reverse engineering,the matching method for point cloud models based on position and pose features of auxiliary measurement information was proposed.Special auxiliary device was designed to obtain the auxiliary information when product was measured.The auxiliary measurement information was segmented from the product data by using connectivity analysis,and the statistical features were extracted according to differential property of discrete data.Position and pose features were constructed based on the statistical features.The point cloud matching was realized through aligning the position and pose features.According to auxiliary measurement information,the matching could avoid poor quality of measuring data completely.The proposed algorithm was stable and reliable,which could obtain the global optimal solution at one time with no initial value and iterated operation.

Key words: position and pose feature, point cloud, matching, reverse engineering, computer aided design