测绘通报 ›› 2021, Vol. 0 ›› Issue (10): 54-59.doi: 10.13474/j.cnki.11-2246.2021.305

• 学术研究 • 上一篇    下一篇

面向水库大坝形变监测的三维激光扫描点云分析方法

杨传训1,2,3,4,5, 杨骥3,4,5, 李勇3,4,5, 韩留生6, 陈水森3,4,5   

  1. 1. 中国科学院广州地球化学研究所, 广东 广州 510640;
    2. 中国科学院大学, 北京 100049;
    3. 广东省遥感与地理信息系统应用实验室, 广东 广州 510070;
    4. 广东省地理空间信息技术与应用公共实验室, 广东 广州 510070;
    5. 广州地理研究所, 广东 广州 510070;
    6. 山东理工大学, 山东 淄博 255000
  • 收稿日期:2020-10-19 修回日期:2021-07-28 发布日期:2021-11-13
  • 通讯作者: 陈水森。E-mail:css@gdas.ac.cn
  • 作者简介:杨传训(1988-),男,博士生,主要研究方向为地理信息系统与环境遥感。E-mail:747009083@qq.com
  • 基金资助:
    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)

3D laser scanning point cloud analysis method for dam deformation monitoring

YANG Chuanxun1,2,3,4,5, YANG Ji3,4,5, LI Yong3,4,5, HAN Liusheng6, CHEN Shuisen3,4,5   

  1. 1. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;
    3. Guangdong Remote Sensing and GIS Application Laboratory, Guangzhou 510070, China;
    4. Guangdong Public Laboratory of Geospatial Information Technology and Application, Guangzhou 510070, China;
    5. Guangzhou Institute of Geography, Guangzhou 510070, China;
    6. Shandong University of Technology, Zibo 255000, China
  • Received:2020-10-19 Revised:2021-07-28 Published:2021-11-13

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。

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

Abstract: Deformation monitoring is an important part in dam safety monitoring. With the development of 3D 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:①The improved algorithm has high efficiency and excellent precision, and is suitable for dam point cloud data processing and comparative analysis. ②The developed point cloud data integration processing software is simple and easy to use, and can accurately reflect the deformation of the dam. ③Huanglongdai dam is stable, there is no safety hazard.

Key words: reservoir dam, deformation monitoring, 3D laser scanning, point cloud data registration, progressive encryption triangulation filtering

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