地面三维激光扫描数据的DEM重建精度分析  

Accuracy Analysis of DEM Reconstruction of Ground 3D Laser Scanning Data

作　　者：王江涛 WANG Jiangtao

机构地区：[1]中煤航测遥感集团有限公司

出　　处：《地理空间信息》2019年第12期99-102,117,I0003,共6页Geospatial Information

基　　金：国家自然科学基金资助项目(41604005、41272389);测绘地理信息公益性行业科研专项经费资助项目(201412016)

摘　　要：提出将地面三维激光扫描技术获取的地表点云数据,实现数字高程模型(DEM)表面的重建,并从数据误差和建模误差两个方面对DEM重建的精度进行分析,提出了改进精度的方法。As a new product in the information age,3 D laser scanning technology provides an efficient and convenient means for obtaining high-precision spatial data.This technology has been a fast model for solid models in engineering measurement,industrial manufacturing,archaeological measurement and virtual reality,but the application research in topographic surveys,especially surface reconstruction,is not perfect.Therefore,we used ground 3 D laser scanning technology to obtain surface point cloud data at first.And then,we realized the reconstruction of DEM surface,and analyzed the precision of DEM reconstruction in detail from data error and modeling error two aspects.Finally,we proposed a method for improving the precision.

关 键 词：三维激光扫描 DEM重建 精度分析 

分 类 号：P228[天文地球—大地测量学与测量工程]