长江科学院院报2018，Vol.35Issue(2)：151-154,4.DOI:10.11988/ckyyb.20161047
基于特征差异的机载LiDAR侵蚀沟点云分割方法
Point Cloud Segmentation of Erosion Gully from Airborne LiDAR Data Based on Characteristic Difference
摘要
Abstract
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.关键词
机载LiDAR/侵蚀沟/点云数据/分割方法/表面特征Key words
airborne LiDAR/erosion gully/point cloud/segmentation/surface feature分类
天文与地球科学引用本文复制引用
许颖,岳东杰,孟德友..基于特征差异的机载LiDAR侵蚀沟点云分割方法[J].长江科学院院报,2018,35(2):151-154,4.基金项目
国家自然科学基金项目(41501178) （41501178）
水利部重点实验室开放研究基金项目(2015003) （2015003）
