一种多视角无人机影像匹配对优选方法  

Study on an image matching pair optimization algorithm

作　　者：盘贻峰 李洋 黄丽霞 马伟乐 罗干 PAN Yifeng;LI Yang;HUANG Lixia;MA Weile;LUO Gan(Guangxi Institute of Natural Resources Survey and Monitoring,Nanning 541002,China;Technology Innovation Center for Natural Resources Monitoring and Evaluation of Beibu Gulf Economic Zone,Ministry of Natural Resources,Nanning 541002,China;Huawei Technologies Co.,Ltd.,Shenzhen,Guangdong 518129,China;Wuhan Tianjihang Information Technology Co.,Ltd.,Wuhan 430074,China)

机构地区：[1]广西壮族自治区自然资源调查监测院,南宁541002 [2]自然资源部北部湾经济区自然资源监测评价工程技术创新中心,南宁541002 [3]华为技术有限公司,广东深圳518129 [4]武汉天际航信息科技股份有限公司,武汉430074

出　　处：《测绘科学》2023年第3期171-180,共10页Science of Surveying and Mapping

基　　金：广西重点研发计划项目(桂科AB22080077);广西科技基地和人才专项(桂科AD20238044);创新研究专项基金项目(2022C61540);广西壮族自治区自然资源调查监测院“揭榜挂帅”项目(JBGS2022001)。

摘　　要：针对当前无人机影像匹配过程中错误匹配对多、冗余量大、提取效率低的问题,该文提出一种精简再扩展的影像匹配对优选策略。基于影像空间近邻关系和最大生成树算法构建影像匹配对的精简拓扑连通图;基于影像共视性、传递性对拓扑连通图进行旁向迭代扩展;使用3组无人机数据验证算法的可行性。实验结果表明:该研究提出的算法能够实现高效的影像匹配对优选,在保证稀疏重建完整性及精度的前提下,相对于穷举匹配法匹配效率提高了4~70倍,尤其针对高分辨率遥感影像处理更有优势。Aiming at the problems of many false matching pairs,large redundancy and low extraction efficiency in unmanned aerial vehicles(UAV)image matching,we propose an image matching pair optimization strategy,which first simplifies the image matching pair and then expands it.We construct a simplified topological connected graph of image matching pairs,which is based on image space neighbor relation and maximum spanning tree algorithm.We extend topologically connected graphs by side iteration,which is based on the co-vision and transitivity of image pairs.We use three groups of UAV data to test the feasibility of the algorithm.The results show that the proposed algorithm can realize efficient optimization of image matching pairs,and on the premise of ensuring the integrity and accuracy of sparse reconstruction,the matching efficiency is improved by 4~70times compared with the Full method.In addition,it is worth noting that it has more advantages in the optimization of high-resolution remote sensing image matching pairs.

关 键 词：影像匹配 空间一致性 最大生成树 拓扑连通图 遥感影像 

分 类 号：P236[天文地球—摄影测量与遥感]