Two-channel predictive multiple description coding
Two-channel predictive multiple description coding
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DOI：
10.1109/icip.2005.1530144
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发表时间：
2005-11
期刊：
影响因子：
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通讯作者：
A. Jagmohan;A. Sehgal;N. Ahuja
中科院分区：
文献类型：
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作者：
A. Jagmohan;A. Sehgal;N. Ahuja
提出了一种基于边信息编码原理的多描述视频编解码器。特别是，我们强调某些关键组件的编解码器的设计，大大有助于率失真性能的建议编解码器。这些包括结合二进制LDPC码使用量化码本的随机化排列，用于在系数比特平面之间划分可用比特率。所提出的编解码器的另一个关键组成部分是使用pdf估计来改进解码器重构。最后，我们使用一个银行的顺序LDPC解码器，以有效地解码发送陪集信息。经验评估表明，所提出的编解码器的上级性能的编码视频包擦除信道的通信。
This paper presents a multiple description (MD) video codec based on the principles side-information coding. In particular, we highlight certain key components of the codec design that contribute significantly to the rate-distortion performance of the proposed codec. These include the use of randomized permutations of the quantization codebook in conjunction with binary LDPC codes for partitioning the available bit-rate among the coefficient bit-planes. Another key component of the proposed codec is the use of pdf estimation for improved decoder reconstruction. Lastly, we use a bank of sequential LDPC decoders to efficiently decode the transmitted coset information. Empirical evaluation demonstrates the superior performance of the proposed codec for the communication of encoded video over packet erasure channels.