A simple rectification method for linear multi-baseline stereovision system |
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Authors: | Du Xin Li Hong-dong Gu Wei-kang |
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Institution: | Department of Information and Electronics, Zhejiang University, Hangzhou 310027, China. duxin@dial.zju.edu.cn |
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Abstract: | The linear multi-baseline stereo system introduced by the CMU-RI group has been proven to be a very effective and robust stereovision system. However, most traditional stereo rectification algorithms are all designed for binocular stereovision system, and so, cannot be applied to a linear multi-baseline system. This paper presents a simple and intuitional method that can simultaneously rectify all the cameras in a linear multi-baseline system. Instead of using the general 8-parameter homography transform, a two-step virtual rotation method is applied for rectification, which results in a more specific transform that has only 3 parameters, and more stability. Experimental results for real stereo images showed the presented method is efficient. |
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