| A matching algorithm based on hybrid matricesconsisting of reference differences and disparities |
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| 作者姓名： | 管业鹏 顾伟康 |
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| 作者单位： | Dept. of Information Science and Electronics Engineering，Zhejiang University，Hangzhou 310027，China，Dept. of Information Science and Electronics Engineering，Zhejiang University，Hangzhou 310027，China |
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| 摘 要： | INTRODUCTION A common method for extracting depth in-formation from intensity images is based on theprinciples of stereovision. In this method, a pair ofimages is obtained using two cameras displacedfrom each other by a known distance. After deter-mining the stereo correspondence, the distance ofvarious points is computed using triangulation(Jeon et al., 2001). Stereo correspondence is theproblem of finding corresponding points in two ormore images of the same scene, usually assumin…
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A matching algorithm based on hybrid matrices consisting of reference differences and disparities |
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| GUAN Ye-peng ?,GU Wei-kang.A matching algorithm based on hybrid matricesconsisting of reference differences and disparities[J].Journal of Zhejiang University Science,2004(7). |
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| Authors: | GUAN Ye-peng ? GU Wei-kang |
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| Abstract: | Unique correct correspondence cannot be obtained only by use of gray correlation technique, which describes gray similar degree of feature points between the left and right images too unilaterally. The gray correlation technique is adopted to extract gray correlation peaks as a coarse matching set called multi-peak set. The disparity gradient limited constraint is utilized to optimize the multi-peak set. Unique match will be obtained by calculating the correlation of hybrid matrices consisting of reference differences and disparities from the multi-peak set. Two of the known corresponding points in the left and right images, respectively, are set as a pair of reference points to determine search direction and search scope at first. After the unique correspondence is obtained by calculating the correlation of the hybrid matrices from the multi-peak set, the obtained match is regarded as a new reference point till all feature points in the left (or right) image have been processed. Experimental results proved that the proposed algorithm was feasible and accurate. |
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| Keywords: | Gray correlation Multi-peak set Reference difference Disparity Hybrid matrix |
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