CDV-DVC: Transform-domain distributed video coding with multiple channel division

[Display omitted] •Channel division scheme for an efficient distributed video coding system.•Two-stage side information generation scheme for Wyner–Ziv frame.•The distortion estimation in the decoder for channel division.•Better rate-distortion performance than DISCOVER codec. This paper proposes an...

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Veröffentlicht in:Journal of visual communication and image representation Jg. 24; H. 5; S. 534 - 543
Hauptverfasser: Park, Sang-Uk, Lee, Young-Yoon, Kim, Chang-Su, Lee, Sang-Uk
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Amsterdam Elsevier Inc 01.07.2013
Elsevier
Schlagworte:
Applied sciences
Artificial intelligence
Channel division
Channels
Coding
Coding, codes
Computer science; control theory; systems
Computer systems and distributed systems. User interface
Distortion
Distributed video coding
Division
Exact sciences and technology
Frames
Hierarchical motion estimation
Information, signal and communications theory
Key frame-based estimate
Motion-compensated frame interpolation
Pattern recognition. Digital image processing. Computational geometry
Representations
Side information generation
Signal and communications theory
Skips
Software
Syndrome-based estimate
Telecommunications and information theory
Visual
Wyner–Ziv coding
Hierarchical motion estimation
Syndrome-based estimate
Channel division
Key frame-based estimate
Side information generation
Motion-compensated frame interpolation
Wyner–Ziv coding
Distributed video coding
Video coding
Motion estimation
Refinement method
Image compression
Distributed system
Side information
Syndrome
Codec
Experimental result
Wyner―Ziv coding
Motion compensation
key frame
Multiple channel
ISSN:1047-3203, 1095-9076
Online-Zugang:Volltext
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Zusammenfassung:[Display omitted] •Channel division scheme for an efficient distributed video coding system.•Two-stage side information generation scheme for Wyner–Ziv frame.•The distortion estimation in the decoder for channel division.•Better rate-distortion performance than DISCOVER codec. This paper proposes an efficient distributed coding system based on multiple channel division. We develop the hierarchical motion refinement scheme using DC syndrome bits to generate high quality side information (SI) for Wyner–Ziv (WZ) frames. Moreover, we estimate local distortion characteristics of an SI frame and encode the SI frame in three coding modes: skip mode for the reliable channel, WZ mode for the medium channel, and intra mode for the unreliable channel. No bit is transmitted in the skip mode. Syndrome bits in the WZ mode are adaptively allocated based on the local distortion characteristics. The H.264 intra coding is performed in the intra mode to recover severely erroneous blocks. Experimental results show that the proposed algorithm provides significantly better rate-distortion performance than the state-of-the-art DISCOVER codec.
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ISSN:1047-3203
1095-9076
DOI:10.1016/j.jvcir.2013.03.016