摘要
以危岩体的变形监测为研究对象,以三维激光扫描技术为数据获取方法,阐述了从点云数据获取、数据预处理到生成深度图像的方法、步骤、注意事项等,分析了数字图像处理中常用边缘检测算子的优缺点,提出采用Canny算子方法提取得到危岩体表面特征线,进而提取线状特征对应的三维坐标,为危岩体的变形监测提供了一种数据处理方法。
Taking the deformation monitoring of unstable rock mass as the resarch object,with the,it was expounded the workflow and key techniques of 3D laser scanning point cloud acquisition,data preprocessing,deep map making.The advantages and disadvantages of the commonly used in digital image processing edge detection operator was analyzed,a Canny operator method was presented in this paper to extract the unstable rock mass linear line and the surface and corresponding three-dimensional coordinates,which provided a reference for unstable rock mass deformation monitoring.
作者
李俊宝
陈良良
LI Junbao;CHEN Liangliang(Henan Surveying and Mapping Vocational College,Zhengzhou Henan 450000,China;China Nuclear Industry Group Surveying and Mapping Institute Company Limited,Xi’an Shaanxi 710038,China)
出处
《北京测绘》
2021年第2期204-207,共4页
Beijing Surveying and Mapping
关键词
点云数据
危岩体
线状特征提取
变形监测
point cloud data
unstable rock
linear feature extraction
deformation monitoring
