地面三维激光扫描点云的多站数据无缝拼接.pdf

39 2 Vol. 39 No.2 2010 3 Journal of China University of Mining Technology Mar. 2010 1 1 2 3 盛业华 , 张 卡, 张 凯 , 王永波 ( 1. , 210046; 2. , 210013; 3. , 221116) : 针对如何将多站分块扫描的点云无缝地拼接为 一个整体以完整地表达扫描对象几何形 的问题, 基于测量平差理论, 提出了一种简单易行的多站扫描数据无缝拼接方法. 首先根据与相 邻前一扫描站相重叠的扫描区域内的同名标志点按附有限制条件的间接平差模型求取坐标转换 参数, 再对序列坐标转换参数按闭合条件进行加权误差分配, 得到各站扫描点云的最终坐标转换 模型, 并依此坐标转换模型对各站扫描点云进行坐标变换, 将它们统 一到项目坐标系下, 最终得 到多站扫描点云的无缝拼接结果. 对多站扫描的建筑物点云数据进行整体拼接实验, 证明了本方 法的可行性和有效性. : 三维激光扫描; 坐标变换; 点云; 拼接; 误差分配 : P 228; T P 391 : A : 1000 1964( 2010) 02 0233 05 Seamless Multi Station Merging of Terrestrial Laser Scanned 3D Point Clouds 1 1 2 3 SHENG Ye hua , ZHANG Ka , ZHANG Kai , WANG Yong bo ( 1. Key Laboratory of Virtual Geographic Environment , MOE, Nanjing Normal U niversity, Nanjing, Jiangsu 210046, China; 2. Provincial Fundamental Geomat ic Center of Jiangsu, Nanjing, Jiangsu 210013, China; 3. School of Environment Spatial Informatics, China University of Mining Technology, Xuzhou, Jiangsu 221116, China) Abstract: Aiming at solving the problem of how to merge the 3D point clouds acquired by ter restrial laser scanner at different stations to form the whole representation of scanned object, a simple and seamless data merging approach for data from multi stations is proposed based on the theory of surveying adjustment. Firstly, the paramete