Bi-directional motion-compensated reconstruction algorithm for pixel-domain distributed video coding

被引：0
|
作者：
Yang C.-L. [1 ]
Su Z.-H. [1 ]
机构：
[1] School of Electronic and Information Engineering, South China University of Technology, Guangzhou 510640, Guangdong
来源：
Huanan Ligong Daxue Xuebao/Journal of South China University of Technology (Natural Science) | 2011年 / 39卷 / 12期
关键词：
Distributed video coding; Motion compensation; Reconstruction; Wyner-Ziv video coding;
D O I：
10.3969/j.issn.1000-565X.2011.12.002
中图分类号：
学科分类号：
摘要：
In order to improve the objective and subjective quality of the decoded videos in distributed video coding (DVC) systems, a bi-directional motion-compensated reconstruction (BMCR) algorithm is proposed for the pixel-domain DVC. In this algorithm, the correlation between intra-frame and inter-frame videos is fully considered, and the pixels whose side information falls in the decoded quantization bins are directly reconstructed according to the side information values, while the pixels whose side information falls out of the decoded quantization bins are reasonably reconstructed by the bi-directional motion compensation with quantization bins. Experimental results indicate that, as compared with the commonly-used MMSE (Minimum Mean Square Error) reconstruction algorithm, BMCR algorithm achieves an average PSNR increment of about 0.5 dB and effectively improves the visual quality of the decoded videos for the middle-and high-speed motion sequences in the Wyner-Ziv video coding system.
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页码：7 / 12
页数：5
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