摘要
核线（epipolarity）是立体摄影测量分析像对几何关系的一个基本概念，在摄影测量的处理当中有着重要的应用价值，但经典的核线关系仅适用于框幅式中心投影影像。针对线阵CCD卫星遥感立体影像，将基于投影轨迹法的扩展核线模型引用到影像匹配中，提出了一种基于动态核线的近似直线约束方法，实现了线阵CCD立体影像匹配的核线约束；在此核线模型应用的基础上，提出了一种基于核线的成像约束方法。试验结果表明前一种方法在匹配速度方面比传统方法有显著的提高，后一种方法在匹配精度、可靠性方面比传统方法有明显提高。
The epipolarity is a basic concept in studying the relative geometry of stereo images in photogrammetric and plays an important part in processing stereo images. It is used widely for frame perspective images, but not for linear CCD images. In consideration of this, the author introduces the extended epipolarity model based on the projection track method into image matching, puts forward the approximate line constraint method of dynamic epipolarity, and sets up constraint conditions of epipolarity in linear CCD push-broom stereo image matching; and then, proposes an imaging constraint method on the basis of application of the epipolarity. The experiment shows that the first method gains a better efficiency, and the second one is better in accuracy and reliability.
出处
《高技术通讯》
CAS
CSCD
北大核心
2006年第6期570-574,共5页
Chinese High Technology Letters
基金
863计划（2002AA135130）资助项目.
关键词
线阵CCD影像
核线
影像匹配
linear CCD in, age, epipolarity, image matching
