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Stereo Matching Methods for Imperfectly Rectified Stereo Images

Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju 61005, Korea
Author to whom correspondence should be addressed.
Symmetry 2019, 11(4), 570;
Received: 26 March 2019 / Revised: 17 April 2019 / Accepted: 17 April 2019 / Published: 19 April 2019
Stereo matching has been under development for decades and is an important process for many applications. Difficulties in stereo matching include textureless regions, occlusion, illumination variation, the fattening effect, and discontinuity. These challenges are effectively solved in recently developed stereo matching algorithms. A new imperfect rectification problem has recently been encountered in stereo matching, and the problem results from the high resolution of stereo images. State-of-the-art stereo matching algorithms fail to exactly reconstruct the depth information using stereo images with imperfect rectification, as the imperfectly rectified image problems are not explicitly taken into account. In this paper, we solve the imperfect rectification problems, and propose matching stereo matching methods that based on absolute differences, square differences, normalized cross correlation, zero-mean normalized cross correlation, and rank and census transforms. Finally, we conduct experiments to evaluate these stereo matching methods using the Middlebury datasets. The experimental results show the proposed stereo matching methods can reduce error rate significantly for stereo images with imperfect rectification. View Full-Text
Keywords: matching cost; stereo correspondence; high resolution matching cost; stereo correspondence; high resolution
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Nguyen, P.H.; Ahn, C.W. Stereo Matching Methods for Imperfectly Rectified Stereo Images. Symmetry 2019, 11, 570.

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