TerraScan在LiDAR点云滤波中的应用研究  

Study on the Application of TerraScan to Filtering LiDAR Data Cloud

作　　者：史建青[1,2] 史照良[3] 

机构地区：[1]淮海工学院测绘工程学院,江苏连云港222005 [2]武汉大学测绘学院,湖北武汉430079 [3]江苏省测绘局,江苏南京210013

出　　处：《淮海工学院学报（自然科学版）》2011年第3期46-49,共4页Journal of Huaihai Institute of Technology:Natural Sciences Edition

基　　金：江苏省测绘科研项目(JSCHKY201114)

摘　　要：简要介绍了机载LiDAR的发展现状,从原始LiDAR点云中滤波出真实的地面点是生成DEM和其他数字产品的基础和关键。TerraScan是一种机载LiDAR点云滤波商业软件,对其滤波算法进行了详细分析,利用山地、丘陵地和平地3种不同地形的LiDAR数据,通过设置不同参数进行滤波试验。试验结果表明,其对平坦地区和城区有较好的滤波效果,但对地形变化较大的复杂山区滤波效果不够理想,有待进一步完善。The status quo for the development of airborne LiDAR was introduced.The filtered terrain points from airborne LiDAR point cloud is the foundation and key to make digital elevation and other digital production.We made a detailed analysis to the filtering algorithm of TerraScan,a commercial software of the airborne LiDAR point cloud filtering.We set different parameters and made filtering experiments on the basis of heterogeneous LiDAR point cloud data,including those of mountainous regions,uplands and planes.Experiment results showed that the filtering effect in urban and plane areas is better while that in mountainous regions with complex terrains is poorer,and therefore the algorithm needs further improvement.

关 键 词：LIDAR TerraScan 地形 滤波 效果 

分 类 号：P231[天文地球—摄影测量与遥感]