P3-CABAC: A Nonstandard Tri-Thread Parallel Evolution of CABAC in the Manycore Era

被引：8

作者：

Chen, Shenggang ^{[1
]}

Chen, Shuming ^{[1
]}

Sun, Shuwei ^{[1
]}

机构：

[1] Natl Univ Def Technol, Dept Comp, Changsha 410073, Hunan, Peoples R China

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY | 2010年 / 20卷 / 06期

关键词：

Evolution of CABAC; thread-level parallelism; video encoder; ARCHITECTURE;

D O I：

10.1109/TCSVT.2010.2045831

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Due to its high-computational complexity and poor parallelism, the context-based adaptive binary arithmetic coder (CABAC) increasingly poses a bottleneck in the large-scale parallel video encoder like H.264 on a manycore platform. Motivated by the organization of the contexts models in CABAC, this letter presents a tri-thread parallel evolution of CABAC. The evolutional coder, which is named P3-CABAC, statically divides syntax elements into three predefined groups, each of which forms a parallel thread. Since the P3-CABAC is thread-level parallelizable and implementation-friendly for manycore processors, it presents a rational consideration for entropy coding in block-based video encoders in the manycore era.

引用

页码：920 / 924

页数：5

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