影响三维激光数据采集精度的因素研究

摘要

三维激光技术在国内仍处于研究阶段,尚未形成成熟通用的方法和评价体系.论文以地面三维激光扫描点云为基础数据,以建筑物为研究对象,介绍三维激光扫描工作流程,分析三维激光扫描数据采集精度的影响因素.实验数据表明三维激光扫描仪距离扫描物体35m左右,3cm间隔和1cm间隔的扫描点点位精度达到0.1～0.6cm左右,配准误差随着测站数增加而积累,随着扫描间隔减小而减小,实验为三维激光扫描技术在测绘行业中的应用提供一定参考.%3D laser scan technology is still in the stage of study,and the method and evaluation system which is mature and universal has not been formed.The basic data of this paper is 3D laser scanning point cloud,with the buildings as the research object.This paper introduces workflow of the 3D laser scan,and analyses influence factors on data acquisition precision of 3D laser scan.The experimental data shows 3D laser scan is apart from scanning objects about 35m,with 3cm interval and lcm interval,the accurancy of scanning spot reaches about l～6mm.And registration error with station number increase and accumulation,along with the decrease of the scanning interval decrease.This experiment for for 3D laser scanning technology in the application of surveying and mapping industry to provide reference