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

Debargha Mukherjee; Bruno Macchiavello; Ricardo L. de Queiroz

doi:10.1117/12.703268

29 January 2007 A simple reversed-complexity Wyner-Ziv video coding mode based on a spatial reduction framework

Debargha Mukherjee, Bruno Macchiavello, Ricardo L. de Queiroz

Author Affiliations +

Proceedings Volume 6508, Visual Communications and Image Processing 2007; 65081Y (2007) https://doi.org/10.1117/12.703268
Event: Electronic Imaging 2007, 2007, San Jose, CA, United States

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.

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Debargha Mukherjee, Bruno Macchiavello, and Ricardo L. de Queiroz "A simple reversed-complexity Wyner-Ziv video coding mode based on a spatial reduction framework", Proc. SPIE 6508, Visual Communications and Image Processing 2007, 65081Y (29 January 2007); https://doi.org/10.1117/12.703268

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