Backward channel aware Wyner–Ziv video coding: A study of complexity, rate, and distortion tradeoff

Liu, Limin; Li, Zhen; Delp, Edward J.

doi:10.1016/j.image.2008.04.003

Cited by 4 publications

(4 citation statements)

References 34 publications

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“…It is because at the low data rate the video quality is more dependent on the reference quality and the skip class blocks isn't adopted by motion estimation. It's obvious that the performance of our result, compared with the result of BCA WZ Modell [7], can improve by 0.S-1.2dB, but the computational complexity of the video coding is reduced.…”

Section: Resultsmentioning

confidence: 80%

“…Limin Liu et al encoded the key frames to get accurate side information using backward channel aware motion estimation (BCAME) [7,8]. The basic idea is to perform ME at the decoder and send the motion information back to the encoder through a backward channel.…”

Section: Introductionmentioning

confidence: 99%

“…The WZVC solution adopted in this paper is an evolution of the Wyner-Ziv coding architecture proposed in [7,8], which extends the ideas based on BCAME. Fig.l illustrates the architecture of the WZVC encoder with three block-based key frame coding modes: Skip mode, Normal mode and Intra mode.…”

Section: Introductionmentioning

confidence: 99%

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A low-complexity frame/block motion activity classification algorithm for Wyner-Ziv video coding

Feng

Men

Tian

et al. 2010

2010 3rd IEEE International Conference on Broadband Network and Multimedia Technology (IC-BNMT)

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In Wyner-Ziv video coding (WZVC), the majority of the computational complexity has been shifted from encoder to the decoder in comparison to its conventional video coding technologies. This paper presents a low-complexity framelblock motion activity classification algorithm for WZVC. Improved rate-distortion performance is achieved by adjusting the coding mode of key frame according to the motion activity along the sequence. Simulation results of proposed technique show a consistent improvement in coding efficiency in comparison to the state-of-the-art TDWZ codec.

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Section: Resultsmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A low-complexity frame/block motion activity classification algorithm for Wyner-Ziv video coding

Feng

Men

Tian

et al. 2010

2010 3rd IEEE International Conference on Broadband Network and Multimedia Technology (IC-BNMT)

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show abstract

“…The key frames can then be encoded relative to the motion-compensated reference frame constructed using the previous key frames and the received motion vectors. This improves the coding efficiency of the key frames and allows for a dynamic allocation of complexity between encoder and decoder [48].…”

Section: Table Imentioning

confidence: 99%

Correlation Noise-Based Unequal Error Protected Rate-Adaptive Codes for Distributed Video Coding

Micallef

Farrugia

Debono

2014

IEEE Trans. Circuits Syst. Video Technol.

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Distributed video coding (DVC) is a paradigm that can shift most of the computational intensive tasks from the encoder to the decoder. This allows for the design of low complexity encoders that can be deployed in devices equipped with limited resources. However, the compression efficiency obtained using practical DVC codecs are still distant from those of traditional predictive video coding schemes such as H.264/AVC. One of the limitations of the existing DVC architectures is that they consider the correlation noise to be randomly distributed across the whole video frame. This paper shows that the Wyner-Ziv (WZ) values that are closer to the endpoints of the quantization intervals have a higher probability of producing incorrect side information (SI) predictions. Thus, through this knowledge, rateadaptive low-density parity-check accumulate codes that provide a higher level of protection to the unreliable SI bits can be exploited. Experimental results show that the proposed scheme can reduce the WZ bit-rate up to 13% relative to the state-ofthe-art DISCOVER architecture when considering interpolation techniques and by up to 0.9 dB for extrapolation techniques.Index Terms-Correlation noise modeling, distributed video coding (DVC), low-density parity-check codes, Wyner-Ziv (WZ) video coding.

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Low complexity distributed video coding

Vijayanagar

Kim

Lee

et al. 2014

Journal of Visual Communication and Image Representation

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Backward channel aware Wyner–Ziv video coding: A study of complexity, rate, and distortion tradeoff

Cited by 4 publications

References 34 publications

A low-complexity frame/block motion activity classification algorithm for Wyner-Ziv video coding

A low-complexity frame/block motion activity classification algorithm for Wyner-Ziv video coding

Correlation Noise-Based Unequal Error Protected Rate-Adaptive Codes for Distributed Video Coding

Low complexity distributed video coding

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