摘要
Abstract
Based on the unmanned aerial vehicle LiDAR point cloud data,the LiDAR360 software was used to pre-process the point cloud data in the study area,including point cloud smoothing,resampling and denoising.Then the Kriging spatial interpolation algorithm was used to generate the digital elevation model(DEM)and digital surface model(DSM),and accuracy testing was conducted.Subsequently,the ArcGIS software was used to subtract the DSM and DEM to obtain the canopy height model(CHM).Finally,a series of spatial analysis methods based on focus sta-tistics were used to extract the height and position of a single tree from CHM.A survey was conducted on the trees along the high-voltage transmission line in the study area,mainly focusing on the horizontal and vertical distances between the trees and line.The results of the survey were compared with the tree barrier hidden danger level and the safety distance standard for high-voltage transmission line,and corresponding safety assessment results and tree barrier positions were obtained.关键词
LiDAR/冠层高度模型/树高提取/树障监测/高压输电线路Key words
LiDAR/CHM/tree height extraction/tree barrier monitoring/high-voltage transmission line分类
信息技术与安全科学
