Distributed Multiple Description Video Coding on Packet Loss Channels

Distributed Multiple Description Video Coding on Packet Loss Channels
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丢包通道上的分布式多描述视频编码

DOI:
10.1109/tip.2010.2097271
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发表时间:
2011-06
影响因子:
10.6
通讯作者:
Yuhua Fan
Yuhua Fan
中科院分区:
计算机科学1区
文献类型:
--
作者:
Jun Sun;Jia Wang;Yuhua Fan

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在本文中,我们要解决的漂移问题的多描述视频编码的分组丢失信道,通过使用最先进的分布式技术。首先,我们提出了一个渐近最优的代码设计的多个描述的Wyner-Ziv(MDWZ)设置。然后,我们提出了一种分布式多描述视频编码(DMDVC)方案,它执行MDWZ编码的每一个非帧内编码帧。代替传统的多描述视频编码中使用的预测循环,基于Slepian-Wolf的编码用于利用帧间相关性。提出了一种位平面提取方案来改善两种描述之间的平衡,使得边信息可以在DMDVC的边解码器之间交换,而质量下降可以忽略不计,这对于在分组丢失信道上的鲁棒传输至关重要。实验结果表明,我们的计划的鲁棒性,特别是在高丢包率。
In this paper, we are to solve the drift problem of multiple description video coding on packet loss channels by using state-of-the-art distributed techniques. We first present an asymptotically optimal code design of multiple descriptions in the Wyner-Ziv (MDWZ) setting. Then we propose a distributed multiple description video coding (DMDVC) scheme, which performs MDWZ coding on each nonintra coded frame. Instead of the prediction loops used in traditional multiple description video coding, Slepian-Wolf based coding is used to exploit interframe correlations. A bitplane extraction scheme is proposed to improve the balance between two descriptions, so that side informations can be interchanged between the side decoders of DMDVC with negligible quality degradation, which is crucial to robust transmission over packet loss channels. Experiment results demonstrate the robustness of our scheme, especially at high packet loss rates.
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