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8th Euromicro Conference on Digital System Design (DSD'05)
A New Architecture for fast Arithmetic Coding in H.264 Advanced Video Coder
Porto, Portugal
August 30-September 03
ISBN: 0-7695-2433-8
Roberto R. Osorio, Campus Sur. Santiago de Compostela
Javier D. Bruguera, Campus Sur. Santiago de Compostela

In this work, a new architecture for binary arithmetic coding is presented in the context of the new AVC/H.264 standard for video coding. Among the new technologies included in AVC/H.264 a Context Adaptive Binary Arithmetic Coder (CABAC) is used that outperforms the baseline entropy coder in a significant manner. In this work we justify the need for a new architecture that implements the unique characteristics of CABAC that are not found in other implementations of arithmetic coding. We show that a fast architecture is needed that combines short cycle time and application-aware scheduling in order to accomplish with the high computational demands. A number of optimizations are introduced that allow processing several symbols per cycle and reduce data binarization overhead. Implementation results are shown for a Virtex-II FPGA and the main conclusions are presented.

Citation:
Roberto R. Osorio, Javier D. Bruguera, "A New Architecture for fast Arithmetic Coding in H.264 Advanced Video Coder," dsd, pp.298-305, 8th Euromicro Conference on Digital System Design (DSD'05), 2005
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