基于基础矩阵的倾斜航摄影像相对定向方法  

Oblique Aerial Image Relative Orientation Based on Fundamental Matrix

作　　者：袁修孝[1,2] 陈时雨[1] 钟灿[1] 

机构地区：[1]武汉大学遥感信息工程学院,湖北武汉430079 [2]地球空间信息技术协同创新中心,湖北武汉430079

出　　处：《武汉大学学报（信息科学版）》2016年第8期995-1000,共6页Geomatics and Information Science of Wuhan University

基　　金：国家973计划(2012CB719902);国家自然科学基金(41371432);国家高分专项(50-H31D01-0508-13/15)~~

摘　　要：提出一种利用基础矩阵进行倾斜航摄影像相对定向的方法。首先,构建立体影像间的基础矩阵并线性求解各元素;然后,由基础矩阵直接导出相对方位元素;最后,视导出的相对方位元素为初始值进行严密相对定向迭代求解,从而得到精确的相对方位元素值。实验表明,该方法对常规航空摄影影像和倾斜摄影影像均适用,能够满足立体模型重构的应用需求。To resolve the oblique image relative orientation problem,in this paper a novel method for relative orientation is proposed based on a fundamental matrix.Firstly,the fundamental matrix is constructed by direct linear transformation,then the elements of relative orientation are deduced with an optimal matrix.Accuracy factors are analyzed for this model,and finally,to get a more accurate solution deploying a rigorous model for relative orientation to the y-parallax,an iterative method is employed that takes elements derived from the essential matrix as the approximate values of the relative orientation elements.Experimental results show that our proposed method is feasible for both traditional aerial images and oblique images,and meets the requirements for stereo-model reconstruction in photogrammetric operations.

关 键 词：倾斜航摄影像 相对定向 上下视差 基础矩阵 

分 类 号：P236[天文地球—摄影测量与遥感]