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Proceedings Paper

A simple reversed-complexity Wyner-Ziv video coding mode based on a spatial reduction framework
Author(s): Debargha Mukherjee; Bruno Macchiavello; Ricardo L. de Queiroz
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Paper Abstract

A spatial-resolution reduction based framework for incorporation of a Wyner-Ziv frame coding mode in existing video codecs is presented, to enable a mode of operation with low encoding complexity. The core Wyner-Ziv frame coder works on the Laplacian residual of a lower-resolution frame encoded by a regular codec at reduced resolution. The quantized transform coefficients of the residual frame are mapped to cosets to reduce the bit-rate. A detailed rate-distortion analysis and procedure for obtaining the optimal parameters based on a realistic statistical model for the transform coefficients and the side information is also presented. The decoder iteratively conducts motion-based side-information generation and coset decoding, to gradually refine the estimate of the frame. Preliminary results are presented for application to the H.263+ video codec.

Paper Details

Date Published: 29 January 2007
PDF: 12 pages
Proc. SPIE 6508, Visual Communications and Image Processing 2007, 65081Y (29 January 2007); doi: 10.1117/12.703268
Show Author Affiliations
Debargha Mukherjee, Hewlett-Packard Labs. (United States)
Bruno Macchiavello, Univ. de Brasília (Brazil)
Ricardo L. de Queiroz, Univ. de Brasília (Brazil)

Published in SPIE Proceedings Vol. 6508:
Visual Communications and Image Processing 2007
Chang Wen Chen; Dan Schonfeld; Jiebo Luo, Editor(s)

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