Applications of a direct algorithm for the rectification of uncalibrated images
Applications of a direct algorithm for the rectification of uncalibrated images
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DOI：
10.1016/j.ins.2003.07.012
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发表时间：
2004-03-22
影响因子：
8.1
通讯作者：
Haigh, JGB
中科院分区：
文献类型：
--
作者：
Al-Zahrani, A;Ipson, SS;Haigh, JGB
提出了一种未标定图像的校正算法，并将其应用于多种情况。该算法直接从图像之间的几何关系生成校正变换，利用图像中的任意三个对应关系来定义一个参考面。使用一组小的对应关系来计算初始校正。通过关联校正图像的区域，半自动地引入附加的对应关系。由于参考平面中表面的校正图像没有相对失真，因此可以通过相关非常精确地匹配特征，从而允许检测到视差的微小变化。在建筑场景的3-D重建中，深度差异被解决到摄像机到被摄体距离的大约0.001。(C)2003 Elsevier Inc.保留所有权利。
An algorithm for the rectification of uncalibrated images is presented and applied to a variety of cases. The algorithm generates the rectifying trans formations directly from the geometrical relationship between the images, using any three correspondences in the images to define a reference plane. A small set of correspondences is used to calculate an initial rectification. Additional correspondences are introduced semi-automatically, by correlating regions of the rectified images. Since the rectified images of surfaces in the reference plane have no relative distortion, features can be matched very accurately by correlation, allowing small changes in disparity to be detected. In the 3-d reconstruction of an architectural scene, differences in depth are resolved to about 0.001 of the distance from camera to subject. (C) 2003 Elsevier Inc. All rights reserved.