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Joint rate-distortion optimization for H.264/AVC intra coding based on cluster computing

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4 Author(s)
Xiao, Wei ; Xidian University, Xi''an, China ; Jizheng Xu ; Feng Wu ; Guangming Shi

This paper presents a joint rate-distortion optimization coding scheme for H.264/AVC intra coding, which uses cluster computing technologies to jointly optimize coding parameters among different image blocks. We identify two kinds of dependencies, inter sub-block dependency and inter macroblock dependency, ignored in the ordinary rate-distortion optimization and a joint RD cost is designed in the optimization process to consider those dependencies. We show that with our proposed scheme, a significant better coding performance can be achieved with the standard-compliant bitstreams. Experiment results show up to 5% bits saving compared to the H.264/AVC reference software.

Published in:

Circuits and Systems (ISCAS), 2012 IEEE International Symposium on

Date of Conference:

20-23 May 2012