摘要
随着无人机航摄软硬件技术的快速发展,通过倾斜摄影三维建模快速获取DSM的成本越来越低。在小比例尺的地形图测量中,DSM若能通过快速处理得到较为精确的DEM,即可节省大量的人力物力。针对林地范围内DSM数据的特点,采用加权整体最小二乘法对DEM进行提取。
The cost of quickly acquiring DSM through oblique photography 3D modeling is getting lower and lower with the rapid development of aerial photogrammetry software and hardware technology for UAV. It will save a lot of manpower and resources if the DSM is able to get a more accurate DEM by fast processing in a small scale topographic survey. In view of the characteristics of DSM data in forest, we used the weighted total least squares method to extract DEM.
出处
《地理空间信息》
2019年第7期118-120,I0003,共4页
Geospatial Information
