摘要
根据黄龙带水库大坝两期高精度三维激光大坝扫描点云数据,本文提出基于正态分布的点云数据配准算法、改进原始渐进加密三角网滤波算法,运用点到面形变量对比分析模式监测大坝形变量,并进行源程序开发,实现一体化监测点云数据的加工、对比分析及建模处理。通过结果验证显示:(1)改进后的算法效率高、精度优,适用于大坝点云数据处理和对比分析;(2)开发的点云数据一体化处理软件简单易用,能够精准反映坝体变形情况;(3)黄龙带坝体稳定,尚无安全隐患。
Deformation monitoring is an important part in dam safety monitoring. With the development of 3 D laser point cloud technology, it is a trend to use this kind of tech in dam deformation monitoring, but the current algorithm constraints and data processing uncertainty errors greatly affect the monitoring accuracy. Based on this research, a point cloud data registration algorithm based on normal distribution, improved original progressive encryption triangulation filter algorithm, and point-to-face variable comparison analysis mode are used to monitor dam-shaped variables, and source program development is realized. Monitor point cloud data processing, comparative analysis, and modeling processing.The results show that:(1)The improved algorithm has high efficiency and excellent precision, and is suitable for dam point cloud data processing and comparative analysis.(2)The developed point cloud data integration processing software is simple and easy to use, and can accurately reflect the deformation of the dam.(3)Huanglongdai dam is stable, there is no safety hazard.
作者
杨传训
杨骥
李勇
韩留生
陈水森
YANG Chuanxun;YANG Ji;LI Yong;HAN Liusheng;CHEN Shuisen(Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China;University of Chinese Academy of Sciences,Beijing 100049,China;Guangdong Remote Sensing and GIS Application Laboratory,Guangzhou 510070,China;Guangdong Public Laboratory of Geospatial Information Technology and Application,Guangzhou 510070,China;Guangzhou Institute of Geography,Guangzhou 510070,China;Shandong University of Technology,Zibo 255000,China)
出处
《测绘通报》
CSCD
北大核心
2021年第10期54-59,共6页
Bulletin of Surveying and Mapping
基金
国家自然科学基金(41976189)
广东省自然科学重点基金(2018B030311059)
南方海洋科学与工程广东省实验室(广州)(GML2019ZD0301)
广东省科技计划项目(2019A050506001)。
关键词
水库大坝
形变监测
三维激光扫描
点云数据配准
渐进加密三角网滤波
reservoir dam
deformation monitoring
3D laser scanning
point cloud data registration
progressive encryption triangulation filtering
