机载激光雷达数据过滤方法对比分析

Not only the filtering of Lidar data set is one of the important processes in Lidar data preprocess, but also it is the crucial step to obtain the DEM with high precision. This paper introduces and detailedly analyses some typical filtering algorithms at different types, and compares them at the aspect of the filtering result, filtering efficiency, algorithm complexity and so on. The characteristics of algorithms and their strongpoints and shortcomings are summarized which can help researchers in successive work.