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

作者：Yang, Chun-Ling^*; Su, Zhuo-Han

来源：Journal of South China University of Technology(Natural Science Edition), 2011, 39(12): 7-12.

DOI：10.3969/j.issn.1000-565X.2011.12.002

• Bidirectional motion
• Distributed video coding
• High-speed motion
• Minimum mean square errors
• Reconstruction algorithms
• Side information
• Subjective quality
• Wyner-Ziv video coding

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.

• 出版日期2011-12
• 单位华南理工大学