A fast extraction method for power transmission tower coordinates in laser point clouds
To realize refined inspection of transmission towers using UAVs,it is necessary to extract the coordinates of these towers from complex laser point cloud data.This paper first preprocesses the point cloud data by downsampling and elevation filtering.Subsequently,each tower is separated and extracted according to the spatial characteristics of the towers,wires,and ground point clouds.Finally,the independent tower is precisely extracted,leveraging their inherent vertical and symmetrical characteristics.Using the laser point cloud data from two 220 kV transmission lines in Zhangjiagang as a case study,the proposed algorithm can extract all transmission towers efficiently and completely.The modeling of a single tower is effective,with an average extraction time of about 2 minutes per tower,facilitating the subsequent trajectory planning for UAV-based detailed tower inspections.
laser point cloudtransmission towerdownsamplingelevation filteringspatial characteristics
国家科技期刊平台
NSTL
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