Hybrid key/Wyner-Ziv frames with flexible macroblock ordering for improved low delay distributed video coding

D. Agrafiotis; P. Ferré; D. R. Bull

doi:10.1117/12.704310

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29 January 2007 Hybrid key/Wyner-Ziv frames with flexible macroblock ordering for improved low delay distributed video coding

D. Agrafiotis, P. Ferré, D. R. Bull

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Proceedings Volume 6508, Visual Communications and Image Processing 2007; 65080Q (2007) https://doi.org/10.1117/12.704310
Event: Electronic Imaging 2007, 2007, San Jose, CA, United States

Abstract

This paper proposes a concealment based approach to generating the side information and estimating the correlation noise for low-delay, pixel-based, distributed video coding. The proposed method employs a macroblock pattern similar to the one used in the dispersed type FMO of H.264 for grouping the macroblocks of each frame into intra coded (key) and Wyner-Ziv groups. Temporal concealment is then used at the decoder for "concealing" the missing macroblocks (estimating the side information-predicting the Wyner-Ziv macroblocks). The actual intra coded/decoded macroblocks are used for estimating the correlation noise. The results indicate significant performance improvements relative to existing motion extrapolation based approaches (up to 25% bit rate reduction).

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D. Agrafiotis, P. Ferré, and D. R. Bull "Hybrid key/Wyner-Ziv frames with flexible macroblock ordering for improved low delay distributed video coding", Proc. SPIE 6508, Visual Communications and Image Processing 2007, 65080Q (29 January 2007); https://doi.org/10.1117/12.704310

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