摘要
针对闭合条件下地面三维激光扫描点云配准产生的闭合差,基于测量平差理论,提出一种闭合差分配方法。首先通过间接平差理论求出各相邻测站间的坐标转换参数及其精度,再对闭合差按与方差成正比分配给各测站。通过多站点云配准实验,验证了该方法能在一定程度上提高点云配准的精度。
The existence of point cloud registration error must cause error propagation of multi stations registration.Aiming at the closed error of point cloud registration of terrestrial 3D laser scanning,a distributing approach of closed error based on the theory of surveying error adjustment is proposed.Firstly,the parameters of coordinate transformation and their accuracy of each adjacent station are worked out according to the indirect adjustment theory.Secondly,the closed error is adjusted to each station by variance proportion.Through the experiment of point cloud registration of multi stations,the results indicate that the approach improves the point cloud registration accuracy.
出处
《大地测量与地球动力学》
CSCD
北大核心
2011年第2期129-132,共4页
Journal of Geodesy and Geodynamics
基金
教育部博士点基金(200802900501)
教育部博士点基金(新教师)(200802901516)
国土环境与灾害监测国家测绘局重点实验室开放基金(LEDM2009A01)
关键词
地面三维激光扫描
ICP算法
点云配准
配准误差
误差分配
terrestrial 3 D laser scanning
ICP algorithm
point cloud registration
registration error
error adjustment
