

FOLLOWUS
1.Institute of Information and Communication Engineering, Zhejiang University, Hangzhou 310027, China
2.Zhejiang Provincial Key Laboratory of Information Network Technology, Hangzhou 310027, China
[ "Li YAO, E-mail: zjyaoli@163.com" ]
Dong-xiao LI, E-mail: lidx@zju.edu.cn
Received:23 October 2011,
Revised:2012-;5-;4,
Published:2012-06
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Li YAO, Dong-xiao LI, Jing ZHANG, et al. Accurate real-time stereo correspondence using intra- and inter-scanline optimization[J]. Frontiers of Information Technology & Electronic Engineering, 2012, 13(6): 472-482.
Li YAO, Dong-xiao LI, Jing ZHANG, et al. Accurate real-time stereo correspondence using intra- and inter-scanline optimization[J]. Frontiers of Information Technology & Electronic Engineering, 2012, 13(6): 472-482. DOI: 10.1631/jzus.C1100311.
This paper deals with a novel stereo algorithm that can generate accurate dense disparity maps in real time. The algorithm employs an effective cross-based variable support aggregation strategy within a scanline optimization framework. Rather than matching intensities directly
the use of adaptive support aggregation allows for precisely handling the weak textured regions as well as depth discontinuities. To improve the disparity results with global reasoning
we reformulate the energy function on a tree structure over the whole 2D image area
as opposed to dynamic programming of individual scanlines. By applying both intra- and inter-scanline optimizations
the algorithm reduces the typical 'streaking' artifact while maintaining high computational efficiency. The experimental results are evaluated on the Middlebury stereo dataset
showing that our approach is among the best for all real-time approaches. We implement the algorithm on a commodity graphics card with CUDA architecture
running at about 35 fames/s for a typical stereo pair with a resolution of 384×288 and 16 disparity levels.
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