Multi-scale topographic feature extraction method based on ground point cloud

• Main Authors: MO YALONG, FU QIANG, WEI LINGFEI, JIANG SHAOCHUN, PENG QUANSHENG, XIANG TIANYUAN, GUO ZHIJIN, WU HAO, CUI ZHIFANG, MAO BEIPING, ZHANG LINGYUAN, LIU LINJIA, GONG BINGSHENG, LI PENG, ZHANG XING, GAO SHENSHEN, DAI YONGHONG, WANG CHAO, ZHANG XIAOMENG, LIU SHIZHEN, YANG LIU, WEI MENG
• Format: Patent
• Language: Chinese; English
• Published: 07.11.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; PHYSICS

A multi-scale topographic feature extraction method based on ground point cloud comprises the following steps: firstly, selecting a topographic feature point extraction range, then constructing a triangular surface, then establishing a space triangular surface equation, and traversing distances from points in a triangular surface projection ground plane range to the triangular surface to obtain a topographic feature point extraction range; and finding out the point cloud point with the maximum distance as the most significant topographic feature point in the current triangular plane, and then distinguishing the extraction fineness of the topographic features according to scale factors set by the topographic features so as to extract the topographic feature points. The ground point cloud multi-scale terrain feature extraction method is reasonable in algorithm and easy and convenient to operate, the technical defects existing in ground point cloud multi-scale terrain feature extraction are ingeniously overcome,