测绘通报 ›› 2017, Vol. 0 ›› Issue (8): 71-75.doi: 10.13474/j.cnki.11-2246.2017.0257

• 学术研究 • 上一篇    下一篇

TLS技术支持下的边坡点云重构与形变分析

孟万利1, 蔡来良1, 杨孝翠2, 杨望山1, 王姗姗1   

  1. 1. 河南理工大学, 河南 焦作 454003;
    2. 信息工程大学, 河南 郑州 450001
  • 收稿日期:2017-01-04 出版日期:2017-08-25 发布日期:2017-08-29
  • 通讯作者: 蔡来良。E-mail:cailailiang@126.com E-mail:cailailiang@126.com
  • 作者简介:孟万利(1993-),男,硕士生,主要研究方向为三维激光扫描技术应用与数据处理。E-mail:864327273@qq.com
  • 基金资助:
    河南省科技攻关项目(162102210226);国家测绘地理信息局测绘地理信息公益性行业专项(201412020);河南省高等学校重点科研项目计划(15A420005);河南理工大学博士基金(B2012-004)

Reconstruction of Slope Point Cloud and Deformation Analysis Based on TLS Technology

MENG Wanli1, CAI Lailiang1, YANG Xiaocui2, YANG Wangshan1, WANG Shanshan1   

  1. 1. Henan Polytechnic University, Jiaozuo 454003, China;
    2. Information Engineering University, Zhengzhou 450001, China
  • Received:2017-01-04 Online:2017-08-25 Published:2017-08-29

摘要: 针对边坡地形点云存在空洞、分布不均匀,以及直接建立表面模型进行形变分析效果差的问题,首先提出了一种改进反距离权重插值对地形点云快速压缩重构的方法,并以程序实现了该方法的自动化处理;然后快速地对压缩重构点云建立了NURBS曲面模型,并从面、线、点进行了全面形变对比分析;最后将计算结果与实测值进行了一致性检验,结果表明符合实际地形变化情况,实现了利用激光点云数据快速构建边坡模型并进行形变分析的目的。

关键词: 边坡变形监测, 三维激光扫描, 点云重构, NURBS曲面建模, 形变分析

Abstract: Aiming at the problem that not only the slope point cloud is void and uneven distribution,but also the effect of establishing the slope model directly and comparing analysis of deformation is poor,this paper puts forward a method which used an improved inverse distance weight interpolation to fast compress and reconstruct point cloud and procedures to achieve automated processing.Then it established the NURBS surface model fast based on the reconstructed point cloud cond compared analysis of deformation based on the NURBS surface model.The research achieved the purpose of using laser point cloud data to rapidly construct slope model and deformation analysis.By Riegl VZ-1000 scanners collected two point cloud data of a slope in mining subsidence area.The experimental analysis showed that the proposed method could implement quickly and automatically to compress and reconstruct the slope terrain point cloud.And the proposed method could implement quickly and accurately to build the slope model and from the surface,line,point to conduct a comprehensive analysis and comparison.The calculated results were in agreement with the measured values,and conformed to the actual terrain changes.The research of this paper supported the application of 3D laser scanner in slope deformation monitoring.

Key words: slope deformation monitoring, three-dimensional laser scanning, point cloud reconstruction, NURBS surface modeling, deformation analysis

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