Stereo image rectification based on polar transformation
Stereo image rectification based on polar transformation
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DOI：
10.1117/1.2969124
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发表时间：
2008-08-01
影响因子：
1.3
通讯作者：
Lee, Sangyoun
中科院分区：
文献类型：
--
作者：
Lee, Yunseok;Toh, Kar-Ann;Lee, Sangyoun
提出了一种基于源图像与输出图像极坐标变换的立体图像校正方法。该方法解决了现有的基于线的方法所产生的几个问题。许多现有的基于线的方法根据每个极点的不同位置需要不同的整流过程。此外，由于缺乏转换关系，它们不可避免地需要一个记录表。我们用线性变换的方法简单地解决了这些问题，避免了在整流过程中根据极点位置产生不同流量的必要性。由于所有的极线都使用相同的数学基础，因此不需要查找表来参考。该方法包括预变换、公共区域检测、基于极坐标变换的图像校正和极线匹配四个步骤。将该方法应用于从三个立体结构中获得的四对立体图像。结果表明，与文献中已有的方法相比，该方法具有较高的精度和效率。(c) 2008年光学仪器工程师学会。
We propose a method based on a polar transformation between the source image and the output image for stereo image rectification. The proposed method solves several problems that arise from existing line-based methods. Many existing line-based methods require a different flow of rectifying process according to the different location of each epipole. Moreover, they inevitably require a recording table due to the lack of a transforming relationship. We solve these problems in a simple way by using a linear transformation that avoids the necessity of having different flows according to the locations of epipoles during rectification. Since all the epipolar lines use the same mathematical basis, look-up tables are not needed for referencing purposes. The proposed method consists of four steps, namely pretransform, common region detection, polar transform-based image rectifying, and epipolar line matching. The method is used on four pairs of stereo images obtained from three stereo structures. The results show good accuracy as well as good efficiency compared to existing methods in the literature. (c) 2008 Society of Photo-Optical Instrumentation Engineers.