摘要
针对线路空间关系难于快速全面获取、精确定量测定的问题,提出了一种基于地基激光三维(3D)扫描和无人机倾斜摄影分别获取线路点云、线路周边真3D情境的方法。将用改进Bursa算法匹配的点云和3D情境的空间坐标融合后导入地理信息系统平台,在仿真环境中自动快捷地检定线路的空间状态。将构建的数据融合配准流程应用于实例中,实验结果表明,激光3D扫描与倾斜摄影在数据采集时可互为补充。相比原始Bursa算法,改进Bursa算法的精度可提升10%~50%,点云与3D情境的配准融合精度优于±2 cm;且融合后的3D效果逼真、空间信息完整、人机交互性强,能快速完成线路的精细测量。
This paper proposes a method based on ground-based laser three-dimensional(3D)scanning and drone tilt photography to obtain the route point cloud and the true 3D situation around the route,addressing the difficulty of quickly and comprehensively obtaining the spatial relationship of the route and accurately and quantitatively determining the problem.For automatically and swiftly evaluating the spatial state of the route in the simulation environment,the point cloud matched by the enhanced Bursa algorithm and geographical coordinates of the 3D scenario are fused and transferred into the geographic information system platform.The experimental results suggested that laser 3D scanning and tilt photography can complement one other in data collection when using the created data fusion registration technique as an example.The accuracy of the enhanced Bursa algorithm may be raised by 10%--50%compared to the original Bursa algorithm,and the registration and fusion accuracy of the point cloud and 3D situation is better than±2 cm.After fusion,the 3D effect is lifelike,spatial information is complete,and human-computer interaction is strong,which can quickly complete the fine measurement of the route.
作者
李晓斌
梁祖鸿
李勇
肖琪
周游
Li Xiaobin;Liang Zuhong;Li Yong;Xiao Qi;Zhou You(Jiangmen Power Supply Burean of Guangdong Power Grid Co.,Ltd,Jiangmen,Guangdong 529000,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2021年第16期504-510,共7页
Laser & Optoelectronics Progress
基金
广东电网有限责任公司科技项目(030700KK52180151)。
关键词
遥感
激光雷达三维扫描
倾斜摄影
空间关系
remote sensing
lidar three-dimensional scanning
tilt photography
spatial relationship
