减小偶然误差累积的同名点匹配传递方式研究  

Transferring strategies of conjugate points matching to reduce random error accumulation

作　　者：熊金鑫[1] 王馨[1] 黄旭[1] 

机构地区：[1]武汉大学遥感信息工程学院,武汉430079

出　　处：《测绘科学》2012年第4期104-106,共3页Science of Surveying and Mapping

基　　金：中央高校基本科研业务费用专项资金(20112130202004);教育部博士研究生学术新人奖(5052011213018)

摘　　要：在立体影像匹配中,匹配传递方式对偶然误差的累积会产生很大影响。本文首先根据匹配传递方式的不同,从航向与旁向出发对各像对模型逐个相互连接,在影像重叠区域提取特征点并进行精确匹配,得到同名像点后完成自由网平差解算。利用2组试验数据对不同匹配传递方式的误差累积结果进行分析比较,得到最优匹配传递方式,提高影像匹配精度,削弱空中三角测量中偶然误差的累积。The transferring strategy of conjugate points in image matching has a great effect on the accumulation of random error.Firstly,each image pair was related by the endlap and sidelap direction according to different transferring strategies.Initial alignment and pyramid based precise image matching were performed after feature points were extracted.Finally,bundle adjustment was performed to evaluate the precision of different conjugate points transferring strategies.Two different conjugate points transferring strategies for both endlap and sidelap were performed and evaluated with experimental data sets.It showed that the transferring strategy from a certain feature point to both directions of endlap and sidelap was superior to that of the traditional strategy.

关 键 词：立体影像 影像匹配传递方式 匹配精度 偶然误差累积 

分 类 号：P231.4[天文地球—摄影测量与遥感]