Study of Airborne LiDAR DTM Construction Based on Adaptive TIN Filtering
Aiming at the problem that LiDAR point cloud filtering algorithm is easily affected by terrain fluctuation,an adaptive irregu-lar triangulation DTM construction algorithm is proposed.The domain search method is used to clean low points and ground points.The angle and distance between the two points are used to adaptively adjust the threshold parameters to achieve adaptive filtering to build a DTM.In order to verify the feasibility of the algorithm,the accuracy of progressive morphology,maximum slope,and elevation threshold filtering algorithms are compared and analyzed.The experimental results show that the DTM generated by the adaptive TIN filtering algorithm has high accuracy in complex terrain areas,The related research results have certain reference significance for con-structing high-accuarcy DTM.
万方数据
维普
