面向人体尺寸测量系统的点云孔洞修补方法  

A Holes Repairing Method of Point Cloud for Body Measurement System

作　　者：周亮[1] 孙志海[2] 吴以凡[1] 张桦[1] 

机构地区：[1]杭州电子科技大学计算学院,浙江杭州310018 [2]杭州电子科技大学信息工程学院,浙江杭州310018

出　　处：《杭州电子科技大学学报（自然科学版）》2014年第5期73-77,共5页Journal of Hangzhou Dianzi University：Natural Sciences

基　　金：国家自然科学基金资助项目(61202093);浙江省3D产业关键技术科技创新团队资助项目(2011R50009)

摘　　要：基于三维人体点云的尺寸提取是非接触式人体尺寸测量的重要方法之一。但是由于人体自身遮挡以及扫描死角等问题,扫描人体所得点云往往存在大量孔洞。为此,该文提出了一种面向人体尺寸测量系统的点云孔洞修补方法。该方法首先调整人体点云位置,然后采用映射法分割人体点云取横截面,接着确定横截面轮廓上孔洞位置,最后通过基于最小二乘的二次曲线拟合修补点云数据。实验结果表明,利用该算法拟合得到的人体点云横截面尺寸与直接对模特手工测量得到的尺寸基本一致,对尺寸测量数据的比较得出误差小于3%。Measurement methods based on the three-dimensional human point cloud are important ways for extracting measurement of body in a non-contract way. However,due to the body’s own shelter,scanning dead and other issues,the resultant scanning point cloud often has lots of holes. In this paper,we present a method to repair holes in the point cloud for body measurement system. Firstly,it adjusts the position of the body point cloud,and divides the body point cloud using the mapping method to take a cross-section. It then determines the cross-sectional profile of the holes on the location. Finally through conic fitting based on least squares patch point cloud data,it repairs the holes. Experiments prove that the measurements of the body point cloud model obtained by our method are consistent with the measurement manually acquired,whose difference is within 3%.

关 键 词：人体点云 孔洞修补 映射法 最小二乘 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]