A simple reversed-complexity Wyner-Ziv video coding mode based on a spatial reduction framework

Mukherjee, Debargha; Macchiavello, Bruno; Queiroz, Ricardo L. de

doi:10.1117/12.703268

Cited by 24 publications

(24 citation statements)

References 9 publications

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“…For example, an estimation theoretic framework suggested for scalable video coding by Rose and Regunathan [6] could be applied to estimate the missing macroblock. Third, an additional Wyner-Ziv layer can be used to improve the quality of the error-concealed frame [7].…”

Section: Resultsmentioning

confidence: 99%

Receiver error concealment using acknowledge preview (RECAP) - An approach to resilient video streaming

Yeo

Tan

Mukherjee

2009

2009 IEEE International Conference on Acoustics, Speech and Signal Processing

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High-quality and low-latency video streaming is essential to providing a natural user experience in video conferencing. This is challenging over lossy networks since compressed video is highly fragile while the low-latency requirement limits the effectiveness of traditional error control approaches such as retransmission and forward error correction. In this paper, we advocate a practical solution for low-latency video communications over best-effort networks that employs an additional low-quality, low-resolution but robustly coded copy of the video. This approach, called RECAP, incurs minimal rate overhead, and can be combined with previously decoded frames to achieve effective concealment of isolated and burst losses even under tight delay constraints. RECAP achieves PSNR gains of 2-6 dB against complete frame loss.

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Section: Resultsmentioning

confidence: 99%

Receiver error concealment using acknowledge preview (RECAP) - An approach to resilient video streaming

Yeo

Tan

Mukherjee

2009

2009 IEEE International Conference on Acoustics, Speech and Signal Processing

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“…Because most transform coefficients used in practical codecs are well modeled as Laplacians, we believe these tables will be critical for many practical Wyner-Ziv codecs. We have used these tables in our codecs [10] [11].…”

Section: Introductionmentioning

confidence: 99%

Tables for practical Wyner-Ziv coding of Laplacian sources

Mukherjee

2009

2009 IEEE International Conference on Acoustics, Speech and Signal Processing

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Many practical coding scenarios deal with sources with transform coefficients that are well modeled as Laplacians. For the Wyner-Ziv coding problem for such sources when correlated side-information is available at the decoder, the side-information is modeled as obtained by independent additive Laplacian or Gaussian innovation on the source. This paper deals with the optimal choice of encoding parameters for practical Wyner-Ziv coding in such scenarios, using the same quantizer family as in the regular codec to cover a range of rate-distortion tradeoffs, given the variances of the source and innovation. Using our prior analysis of a general encoding model based on multi-level coset codes combining source and channel coding, we present comprehensive tables with optimal encoding parameters. These tables can be readily incorporated into a practical codec to read off the encoding parameters.

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“…An alternative method is to use multiple resolutions in encoding WZ frames. Recently, several SI generation methods based on a mixedresolution (MR) DVC architecture have been proposed [12][13][14][15][16][17][18]. In the MR-DVC architecture, the SI quality is improved by exploiting the spatial relationship between the original frames and the scaled ones.…”

Section: Related Workmentioning

confidence: 99%

“…Popular SI generation techniques exploit spatial correlation within the same frame and/or temporal correlation between the consecutive frames [4][5][6]. Recently, optical flow based methods [7,8], hash information generated at the encoder [9][10][11], or multiresolution based techniques [12][13][14][15][16][17][18] have been introduced to improve the SI quality. However, most of these methods have high complexity and long decoding time due to a feedback-based architecture.…”

Section: Introductionmentioning

confidence: 99%

“…Since the coding efficiency is highly affected by the quality of SI in DVC, lots of efforts have been made to improve the quality of SI [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Popular SI generation techniques exploit spatial correlation within the same frame and/or temporal correlation between the consecutive frames [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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Side Information Generation for Distributed Video Coding Using Spatiotemporal Joint Bilinear Upsampling

Liu

Vijayanagar

Kim

2014

International Journal of Distributed Sensor Networks

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Distributed video coding presents a viable solution for power-constrained multimedia communication. However, its relatively low coding efficiency compared to the conventional video coding schemes remains a challenging issue. The rate-distortion performance of distributed video coding is highly dependent on the quality of side information generated at the decoder and various techniques have been proposed to improve the side information quality in block-based and frame-based distributed video coding architectures. In this paper, a robust spatiotemporal joint bilateral upsampling based side information generation method is proposed. The proposed side information generation method is based on a block-based low-complexity distributed video coding architecture with adaptive block coding mode classification. A partially reconstructed Wyner-Ziv (WZ) frame with skip and key blocks is downsampled and spatiotemporal error concealment and joint bilateral upsampling are used to generate the side information. Simulation results show that the proposed method improves the quality of side information significantly while keeping low computational complexity.

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A simple reversed-complexity Wyner-Ziv video coding mode based on a spatial reduction framework

Cited by 24 publications

References 9 publications

Receiver error concealment using acknowledge preview (RECAP) - An approach to resilient video streaming

Receiver error concealment using acknowledge preview (RECAP) - An approach to resilient video streaming

Tables for practical Wyner-Ziv coding of Laplacian sources

Side Information Generation for Distributed Video Coding Using Spatiotemporal Joint Bilinear Upsampling

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