结合点线特征的DOM几何精度自动评定  

Automatic DOM geometric accuracy evaluation based on point and line features

作　　者：牛雨 刘玉轩 樊仲藜 刘思婷 张力[1] NIU Yu;LIU Yuxuan;FAN Zhongli;LIU Siting;ZHANG Li(Chinese Academy of Surveying and Mapping,Beijing 100036,China;Lanzhou Jiaotong University,Lanzhou 730070,China)

机构地区：[1]中国测绘科学研究院,北京100036 [2]兰州交通大学,兰州730070

出　　处：《测绘科学》2022年第5期177-184,共8页Science of Surveying and Mapping

基　　金：国家重点研发计划课题项目(2019YFB1405600)

摘　　要：针对传统数字正射影像(DOM)几何精度评定方法严重依赖于人工量测,难以自动化处理的问题,该文提出了一种综合利用影像点、线特征的多源DOM几何精度自动评价方法。该方法需获取同一地区DOM作为基准。在此基础上,首先对基准DOM和待评定DOM分别构建影像金字塔,然后采用线约束下的点特征匹配方法对不同层级影像进行匹配。在匹配过程中,为提高不同源DOM的匹配精度和鲁棒性,提出了一种改进的互信息匹配测度。多组实验验证了该文所提匹配方法以及DOM几何精度评价方法的有效性,适用于多源DOM几何精度评定的自动化处理。Aiming at the problem that traditional Digital Orthophoto Map(DOM)geometric accuracy evaluation methods rely heavily on manual measurement and are difficult to process automatically,this paper proposes an automatic evaluation method of multi-source DOM geometric accuracy based on image point and line features.This method needs to obtain the DOM of the same area as a reference DOM.On this basis,an image pyramid is constructed separately for the reference DOM and the DOM to be assessed,and then the point feature matching method under line constraints is used to match images of different pyramid levels.During the matching process,an improved mutual information matching measure is proposed to improve the matching accuracy and robustness of different source DOMs.Several experiments verify the effectiveness of the proposed matching method and DOM geometric accuracy evaluation method,which is suitable for automatic processing of multi-source DOM geometric accuracy evaluation.

关 键 词：数字正射影像 点线特征 几何精度 自动评定 

分 类 号：P237[天文地球—摄影测量与遥感]