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arXiv 1604.04848cs.CV
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基于直线相似性的对极几何

Epipolar Geometry Based On Line Similarity

The Hebrew University of Jerusalem(耶路撒冷希伯来大学)

Gil Ben-Artzi, Tavi Halperin, Michael Werman, Shmuel Peleg

摘要:

众所周知,核几何可以从三个核线对应计算,但这种计算在实践中很少使用,因为没有简单的方法来找到相应的线。相反,用于找到对应点的方法被广泛使用。本文提出了一种线之间的相似性度量,指示两条线是否是对应的对极线,并能够根据需要找到对极线对应,用于对极几何的计算。先前已经描述了适用于动态场景的视频序列的两条线之间的相似性度量。本文提出了一种适用于图像的立体匹配相似性度量方法。它基于两条线之间的立体匹配的质量,因为对应的核线产生良好的立体对应。当给出两个对应的点对时,搜索空间大大减小,而不是在所有可能的线对上进行穷举搜索。我们使用真实世界的图像验证所提出的方法,并将其与最先进的方法进行比较。我们发现,与使用7个对应点的标准方法相比,该方法的准确度提高了5倍,与8点算法相当。

英文摘要:

It is known that epipolar geometry can be computed from three epipolar line correspondences but this computation is rarely used in practice since there are no simple methods to find corresponding lines. Instead, methods for finding corresponding points are widely used. This paper proposes a similarity measure between lines that indicates whether two lines are corresponding epipolar lines and enables finding epipolar line correspondences as needed for the computation of epipolar geometry. A similarity measure between two lines, suitable for video sequences of a dynamic scene, has been previously described. This paper suggests a stereo matching similarity measure suitable for images. It is based on the quality of stereo matching between the two lines, as corresponding epipolar lines yield a good stereo correspondence. Instead of an exhaustive search over all possible pairs of lines, the search space is substantially reduced when two corresponding point pairs are given. We validate the proposed method using real-world images and compare it to state-of-the-art methods. We found this method to be more accurate by a factor of five compared to the standard method using seven corresponding points and comparable to the 8-points algorithm.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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