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Proceedings Paper

Hybrid key/Wyner-Ziv frames with flexible macroblock ordering for improved low delay distributed video coding
Author(s): D. Agrafiotis; P. Ferré; D. R. Bull
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Paper 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).

Paper Details

Date Published: 29 January 2007
PDF: 7 pages
Proc. SPIE 6508, Visual Communications and Image Processing 2007, 65080Q (29 January 2007); doi: 10.1117/12.704310
Show Author Affiliations
D. Agrafiotis, Univ. of Bristol (United Kingdom)
P. Ferré, Univ. of Bristol (United Kingdom)
D. R. Bull, Univ. of Bristol (United Kingdom)

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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