目标相关的点云位置精度建模  

Target related point cloud location precision modeling

作　　者：李振 王辉[2] 鲍秀武 

机构地区：[1]扬州大学水利与能源动力工程学院,江苏扬州225127 [2]中国电子科技集团第二十八研究所,南京210007 [3]常州市测绘院,江苏常州213002

出　　处：《测绘科学》2015年第8期100-102,116,共4页Science of Surveying and Mapping

基　　金：国家青年自然科学基金项目(41201484);江苏省高校自然科学研究面上项目(13KJB420005);江苏省水利动力工程重点实验室开放课题项目(K12016)

摘　　要：针对地面三维激光雷达扫描容易受到测量噪声的影响、获取的点云易受系统和随机误差的影响这一问题,该文基于激光雷达作用距离方程,建立目标表面的入射角、距离和反射率等目标相关因素对点云几何精度的影响模型。将平面拟合精度作为点云几何精度评价指标,利用Faro Focus 3D地面三维激光雷达对6种材质的平面在不同距离、不同入射角的条件下进行扫描实验。实验结果表明,加入反射率影响模型后,垂直方向改正中误差的幅值减小,反射率影响模型有效。Based on laser radar range equation, the model about geometric accuracy of point cloud un- der different angles of incidence, range and reflectivity was established. Plane fitting accuracy was made as the evaluate index of point cloud~ s geometric accuracy. Faro Focus 3D was used under different angles of incidence and range of 6 different materials plane. The results showed that the vertical direction in the magnitude of the error correction was reduced and the model was effective after adding reflectance effect model.

关 键 词：激光雷达作用距离方程 几何精度 平面拟合 反射率影响模型 

分 类 号：P237[天文地球—摄影测量与遥感]