激光扫描点云数据的NURBS曲面重构技术研究  

NURBS Surface Reconstruction of Point Cloud from Laser Scanning System

作　　者：郭迎福[1] 李兵[1] 陈安华[2] 王晓强[1] 李鹏南[2] 

机构地区：[1]西安交通大学精密工程研究所,陕西西安710049 [2]湖南科技大学机械设备健康维护省重点实验室,湖南湘潭411201

出　　处：《湖南科技大学学报（自然科学版）》2006年第3期31-34,共4页Journal of Hunan University of Science And Technology：Natural Science Edition

基　　金：国家自然科学基金资助项目(50275120);湖南省杰出青年基金资助项目(02JJYB009);机械设备健康维护湖南省重点实验室开放基金资助项目(KFJJ0503)

摘　　要：利用激光扫描系统采集的点云数据具有在某一维上不变的特点,提出了基于NUBRS重构曲面的方法.在原始点云数据预处理上,采用删除非曲面上的点云数据、拼接、排序和点云数据切片等方法,利用最小二乘非均匀B样条法对切片点云数据进行光滑和必要的数据插补,并经二次采样后得到重构曲面的数据.以鼠标表面的重构过程说明了该方法的有效性和实用性.图4,参7.The point cloud on one scanning line from laser scanning system has the same value in one dimension. Based on this characteristic, an algorithm of surface reconstruction based on NURBS is put forward. For the pre-processing of the original point cloud, the points that don＇t belong to the surface are deleted, and the methods of split, sequencing and section are used. The least square non-uniform B-Spline are used to smooth and interpolate data to the section point cloud, then the data of reconstructed surface is achieved after a secondary sampling. An example of a mouse is given to testify that the method is effectual and feasible. 4refs., 7refs.

关 键 词：反求工程 曲面重构 激光扫描 NURBS 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]