大重叠度影像的相对定向与前方交会精度分析  

Analysis of Precision of Relative Orientation and Forward Intersection with High-overlap Images

作　　者：张永军[1] 张勇[1] 

机构地区：[1]武汉大学遥感信息工程学院,武汉市珞喻路129号430079

出　　处：《武汉大学学报（信息科学版）》2005年第2期126-130,共5页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金资助项目(40301041)

摘　　要：针对数码相机所拍摄的序列图像具有重叠度高、同名特征的冗余观测值多等特点,分析了大重叠度序 列影像在相对定向和前方交会时的精度优势。影像重叠度越大,相对定向的精度越好;而且重叠数目越大,交 会角越大,平面和高程(或深度)方向的交会精度和可靠性也越高,实用中可采用80%重叠度的序列影像进行 三维重建等。Image sequence acquired by digital cameras has the advantages of high-overlap and redundancy of observations, which makes it more and more popular in 3D reconstruction. Precision of relative orientation and forward intersection with high overlapping image sequence is analyzed. The higher the overlap is, the better the result of relative orientation is. The more images are used, and the bigger the intersection angle is, the higher the precision of forward intersection is. In practice, images with 80% overlap are optimal for 3D reconstruction and other applications.

关 键 词：序列影像 重叠度 相对定向 前方交会 精度分析 

分 类 号：P234[天文地球—摄影测量与遥感] P231.4[天文地球—测绘科学与技术]