摘要
基于LiDAR点云数据,利用MicroStation平台下的TerraSolid软件包,采用无地面控制空中三角测量的方法对影像数据进行正射纠正,从而得到正射影像,并总结操作流程,为生产单位提供参考依据。实验表明,利用TerraSolid软件中渐进加密滤波算法提取的地面点云生成的DEM与实际地形有较好的吻合;利用离地高度算法提取植被和建筑物效果的优劣取决于设定阈值的精度;利用TerraSolid软件制作的正射影像具有较高的几何精度和较好的视觉效果。
The purpose of this paper is to use the TerraSolid software package based on MicroStation platformbased on LiDAR point cloud data.The orthographic image is corrected and the orthophoto image is obtained,and the operation flow is summarized,which provides the reference for the production unit.The experiment shows that the DEM which was generated by the ground point cloud that extracted by the progressive encryption algorithm in TerraSolid software is in good agreement with the actual terrain.The use of the height from ground algorithm to extract the effect of vegetation and building depends on the accuracy of the set threshold.The orthoimage produced using TerraSolid software has high geometric accuracy and better visual effects.
作者
张超
ZHANG Chao(China Railway Fifth Survey and Design Institute Group Company Limited,Bejing 102600,China)
出处
《北京测绘》
2019年第11期1405-1408,共4页
Beijing Surveying and Mapping
关键词
LIDAR
TERRA
SOLID
空中三角测量
DEM
Light Detection And Ranging(LiDAR)
TerraSolid
aerial triangulation
Digital Elevation Model(DEM)
