摘要
三维激光点云数据是一项集中了摄影测量、遥感、计算机视觉等不同领域的数据源,为地形图成图工作提供了一定便利。三维激光点云数据一般由机载三维激光点云外业采集,经历数据重采样、数据去噪、数据拼接等多项内业处理,最终生成测区完整的三维激光点云数据。测绘人员可依托于此数据选择恰当的点云渲染模式,精准采集测区数据,绘制出更为精确的1:500地形图。文章阐述了三维激光点云技术全流程,以1:500地形图成图过程中的三维激光点云数据实际应用为依据,对成图精度进行了分析。
Three-dimensional laser point cloud data is a data source that integrates photogrammetry,remote sensing,computer vi‐sion and other fields,which provides some convenience for topographic map mapping.The data of 3D Laser Point Cloud is col‐lected by airborne 3D laser point cloud field,which undergoes a number of internal processing such as data resampling,data denois‐ing,data splicing and so on,and finally generates a complete 3D laser point cloud data in the measurement area.Based on this data,the surveyor can select the appropriate point cloud rendering mode,collect the survey area data accurately,and draw a more accurate 1:500 topographic map.This paper describes the whole process of 3D laser point cloud technology,and based on the practical appli‐cation of 3D laser point cloud data in the mapping process of 1:500 topographic map,it analyzes the accuracy of mapping.
作者
郎荣庆
黄仟艳
LANG Rong-qing;HUANG Qian-yan(Guangxi Institute of Natural Resources Survey and Monitoring;Guangxi Natural Resources Museum and Archives)
出处
《智能建筑与智慧城市》
2023年第8期42-44,共3页
Intelligent Building & Smart City
关键词
三维激光
点云数据处理
1:500地形图
精度分析
three-dimensional laser
point cloud data processing
1:500 topographic map
accuracy analysis
