摘要
反映线路空间状态的多源实景配准融合精度一直制约着实景仿真技术的纵深使用。针对该问题,本文提出在不重组重构数据的前提下,以"三维设计模型作为理论真值、激光三维点云提供线路精确几何特征、无人机倾斜摄影真三维作为线路周边情境"的分工,研究改进Bursa算法以提升既有实景配准精度。实例表明,改进的Bursa算法对坐标系配准精度提升了10%~50%,算法本身对配准精度的损失可忽略,多源实景叠加点位差均值为1.85 cm,小于2.5 cm的要求。该配准算法简单,便于实现,配准后实景空间属性完整、效果逼真,满足线路空间仿真测量需求。
In order to solve the accuracy of multi-source real-scene registration and fusiont, the division of labor is proposed that "3 D design model is used as the theoretical truth value, laser 3 D point cloud provides accurate geometric features of the line, and UAV tilt photography true 3 D is used as the surrounding situation of the line",and the improved Bursa algorithm is used to improve the existing real-scene registration accuracy, and the real-scene registration overlay process is constructed to complete the fusion.The example shows that the improved Bursa algorithm can improve the registration accuracy by 10%~50%,the loss of registration accuracy can be ignored, and the average position difference of multi-source real al gorithm scene superposition point is 1.85 cm, less than 2.5 cm.The registration algorithm is simple and easy to implement.After registration, the real algorithm scene space attributes are complete and the effect is realistic, which meets the needs of line space simulation.
作者
侯维捷
丁志广
梁祖鸿
叶智杰
张晓光
文习鹤
HOU Weijie;DING Zhiguang;LIANG Zuhong;YE Zhijie;ZHANG Xiaoguang;WEN Xihe(Jiangmen Power Supply Bureau,Guangdong Power Grid Co.,Ltd.,Jiangmen 529000,China;Jiangmen Investigation and Survey Institute,Jiangmen 529000,China;Jiangmen Electric Power Design Institute Co.,Ltd.,Jiangmen 529000,China)
出处
《测绘通报》
CSCD
北大核心
2021年第S01期70-74,共5页
Bulletin of Surveying and Mapping
关键词
输电线路
空间仿真
地理实景
配准
Bursa算法
transmission line
spatial simulation
geographical reality
registration
Bursa algorithm
