摘要
通过多个已知点上的转换坐标值与已知坐标值之差(称为坐标转换残差)来建立残差改正模型,对测区内的点云数据施加残差改正,从而提高三维激光扫描点云数据的精度。同时,以Leica Scanstation C10型扫描仪为例,通过实验探讨了点云高程精度与扫描距离及倾角的关系,分析了该仪器扫描时配准标靶至仪器的合理距离,以促进维激光扫描技术在DEM建模中的应用。
In this paper,we established a residual correction model is through the difference between the conversion coordinates and known coordinate values on several known points(called coordinate residuals transformation),and did the residual correction to point clouds in the survey area,so as to improve the accuracy of 3D laser scanning point cloud.Meanwhile,taking Leica ScanstationC10 scanner for example,we confirmed the relationship of elevation accuracy,scanning distance and the angle of point cloud through the experiment,and analyzed the reasonable distance between the instrument to the registration target,so as to promote the application of 3D laser scanning technology in DEM modeling.
出处
《地理空间信息》
2019年第8期98-101,I0004,共5页
Geospatial Information
基金
陕西省自然科学基金资助项目（2016JM5048）
陕西铁路工程职业技术学院2016年第二批科研基金资助项目（KY2016-52）
关键词
三维激光扫描
点云数据
坐标转换
残差改正
精度
3D laser scanning
point cloud data
coordinate transformation
residuals correction
precision
