Imaging Components, Systems, and Processing

Probabilistic choice between symmetric disparities in motion stereo matching for a lateral navigation system

[+] Author Affiliations
Egor Ershov

Institute of Information Transmission Problems, Laboratory of Vision Systems, 19 Bolshoi Karetnii, Moscow 101447, Russia

Victor Karnaukhov, Mikhail Mozerov

Institute of Information Transmission Problems, Laboratory of Digital Optics, 19 Bolshoi Karetnii, Moscow 101447, Russia

Opt. Eng. 55(2), 023101 (Feb 02, 2016). doi:10.1117/1.OE.55.2.023101
History: Received August 17, 2015; Accepted January 12, 2016
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Abstract.  Two consecutive frames of a lateral navigation camera video sequence can be considered as an appropriate approximation to epipolar stereo. To overcome edge-aware inaccuracy caused by occlusion, we propose a model that matches the current frame to the next and to the previous ones. The positive disparity of matching to the previous frame has its symmetric negative disparity to the next frame. The proposed algorithm performs probabilistic choice for each matched pixel between the positive disparity and its symmetric disparity cost. A disparity map obtained by optimization over the cost volume composed of the proposed probabilistic choice is more accurate than the traditional left-to-right and right-to-left disparity maps cross-check. Also, our algorithm needs two times less computational operations per pixel than the cross-check technique. The effectiveness of our approach is demonstrated on synthetic data and real video sequences, with ground-truth value.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Egor Ershov ; Victor Karnaukhov and Mikhail Mozerov
"Probabilistic choice between symmetric disparities in motion stereo matching for a lateral navigation system", Opt. Eng. 55(2), 023101 (Feb 02, 2016). ; http://dx.doi.org/10.1117/1.OE.55.2.023101


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