high precision dem 高精度dem
Airborne lidar point cloud filtering is the key of acquiring DSM and DEM with high precision.
机载激光点云数据滤波是获取高精度数字表面模型和数字高程模型的关键。
The aim of the filtering of LIDAR data set is to divide the data set into ground points and non-ground points. The filtering of LIDAR data set is a crucial step to obtain the DEM with high precision.
过滤是LIDAR数据预处理的重要步骤，过滤的目的是把LIDAR数据分成地面点和非地面点，它是获取高精度数字高程模型的关键。
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