Multiple description video coding for scalable and robust transmission over IP
Multiple description video coding for scalable and robust transmission over IP
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DOI：
10.1109/tcsvt.2004.842606
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发表时间：
2005-03
影响因子：
8.4
通讯作者：
Nicola Franchi;M. Fumagalli;R. Lancini;S. Tubaro
中科院分区：
文献类型：
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作者：
Nicola Franchi;M. Fumagalli;R. Lancini;S. Tubaro
在本文中，我们解决了在不可靠网络（例如互联网）上进行视频传输时发生数据包丢失的问题。最新的文献表明多重描述（MD）是一种有前途的编码方法来处理这个问题。此外，还示出了运动补偿预测的使用在MD编码方案中的重要性。本文提出了两种多描述视频编码架构，它们都基于运动补偿预测环。这两种架构的共同特征是使用多相下采样技术来创建 MD 并在描述之间引入交叉冗余。第一种方案，我们称之为漂移补偿多描述视频编码器（DC-MDVC），在容易出错的环境中使用时显得非常稳健，但它只能提供两种描述。第二种架构称为独立流多描述视频编码器（IF-MDVC），在运动补偿循环之前生成多组数据；在这种情况下，编码器使用的描述数量的选择没有严格的限制。
In this paper, we address the problem of video transmission over unreliable networks, such as the Internet, where packet losses occur. The most recent literature indicates multiple description (MD) as a promising coding approach to handle this issue. Moreover, it has been shown also how important the use of motion compensation prediction is in an MD-coding scheme. This paper proposes two architectures for multiple description video coding, both of them are based on the motion compensation prediction loop. The common characteristic of the two architectures is the use of a polyphase down-sampling technique to create the MDs and to introduce cross-redundancy among the descriptions. The first scheme, that we call drift-compensation multiple description video coder (DC-MDVC) appears very robust when used in an error-prone environment, but it can provide only two descriptions. The second architecture, called independent flow multiple description video coder (IF-MDVC), generates multiple sets of data before the motion compensation loop; in this case, there are no severe limitations in the selection of the number of descriptions used by the coder.