倾斜摄影测图下的地面特征点快速提取方法  

A method for rapid extraction of ground feature points in oblique photogrammetry

作　　者：曾锦炎 钱景山 ZENG Jingyan;QIAN Jingshan(Guangdong Surveying and Mapping Engineering Company Limited,Guangzhou,Guangdong 510700,China)

机构地区：[1]广东省测绘工程有限公司,广东广州510700

出　　处：《北京测绘》2025年第4期479-483,共5页Beijing Surveying and Mapping

基　　金：广东省科技计划(2021B1111610001)。

摘　　要：针对倾斜摄影建模下的地形图生成效率低、影像密集点云使用不足等问题,本文给出了一种从无人机倾斜摄影生成的密集点云数据中快速准确获取地面特征点、批量实现对地形图高程点快速注记的方法,并选取3种不同地形区域,对该方法进行检验。实验结果表明,该方法在地面裸露的条件下使用能极大提高工作效率和成果精度,具有一定的实用价值,为后续类似问题的解决积累了工程实践经验。This paper addressed the issues of low efficiency in topographic map generation and underutilization of dense point clouds in oblique photogrammetry.A method was proposed for quickly and accurately extracting ground feature points from dense point cloud data generated by UAV oblique photography.This method also allows for the batch annotation of elevation points on topographic maps.Three different terrain areas were selected to test the method.Experimental results show that the method significantly improves work efficiency and the accuracy of results,especially in areas with exposed ground.It has practical value and contributes to the accumulation of engineering experience for solving similar issues in the future.

关 键 词：倾斜摄影测量 点云分类 三维模型测图 地形图测绘 质量评价 

分 类 号：P231[天文地球—摄影测量与遥感]