%0 Journal Article
%A XU Ying
%A YUE Dong-jie
%A MENG De-you
%T Point Cloud Segmentation of Erosion Gully from AirborneLiDAR Data Based on Characteristic Difference
%D 2018
%R 10.11988/ckyyb.20161047
%J Journal of Yangtze River Scientific Research Institute
%P 151-154
%V 35
%N 2
%X To overcome the limits of Digital Elevation Model in extracting erosion gully features, a method of point cloud segmentation for  airborne LiDAR data based on characteristic difference is proposed. Firstly, the characteristics of point cloud of gullies are analyzed, and then the differences in surface features are obtained based on different scales after preprocessing of the point cloud. Initial gullies are segmented from point clouds with the aid of a curvature threshold. Finally, real gully point clouds are obtained based on clustering analysis. The experimental results demonstrate that gullies can be detected accurately with airborne LiDAR point clouds, and the present method provides a new idea for quantitative evaluation of gullies.
%U http://ckyyb.crsri.cn/EN/10.11988/ckyyb.20161047