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A simple encoder scheme for distributed residual video coding.

Hu, Chunyun; Zhao, Yafan; Yu, Long; Jiang, Yang; Xiong, Yunhui

Authors

Chunyun Hu

Yafan Zhao

Long Yu

Yunhui Xiong



Abstract

Rate-distortion (RD) performance of distributed video coding (DVC) is considerably less than that of conventional predictive video coding. In order to reduce the performance gap, many methods and techniques have been proposed to improve the coding efficiency of DVC with increased system complexity, especially techniques employed at the encoder. For example, encoder mode decisions, optimal quantization and hash methods no doubt increase the complexity of the encoder. However, low complexity encoder is a widely desired feature of DVC. In order to improve the coding efficiency while maintaining low complexity encoder, this paper focuses on distributed residual video coding (DRVC) architecture and proposes a simple encoder scheme. The main contributions of this paper are as follows: 1) propose a bit-plane block-based method combined with bit-plane re-arrangement to improve the dependency between source and side information (SI), while reducing the amount of data to be channel encoded; 2) present a simple iterative dead-zone quantizer with three levels, in order to adjust quantization from coarse to fine. The simulation results show that the proposed scheme outperforms the DISCOVER scheme for low-to-medium motion video sequences in terms of RD performance, while also maintaining a low complexity encoder at the same time.

Journal Article Type Article
Journal Multimedia tools and applications
Print ISSN 1380-7501
Electronic ISSN 1573-7721
Publisher Springer (part of Springer Nature)
Peer Reviewed Peer Reviewed
Institution Citation HU, C., ZHAO, Y., YU, L., JIANG, Y. and XIONG, Y. 2020. A simple encoder scheme for distributed residual video coding. Multimedia tools and applications [online], (Online First). Available from: https://doi.org/10.1007/s11042-020-08811-y
DOI https://doi.org/10.1007/s11042-020-08811-y
Keywords Distributed residual video coding (DRVC); Rate distortion (RD); Low complexity encoding; Bit-plane block-based methods

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