| H.264中的CABAC熵编码研究 |
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| 引用本文： | 黄菠,贾蓉,樊丰.H.264中的CABAC熵编码研究[J].中国有线电视,2007(8):758-762. |
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| 作者姓名： | 黄菠 贾蓉 樊丰 |
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| 作者单位： | 电子科技大学,四川,成都,610054 |
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| 摘 要： | H.264在主要档次中采用了基于上下文的自适应二进制算术编码CABAC。CABAC是一种高效的熵编码方法,它在计算的复杂度和编码效率之间作了折衷,建立了基于查表的概率模型,对乘法运算也作了优化。阐述了CABAC的编解码过程,对归一化操作和ModelNumber的选取进行了分析,并将其与CAVLC在编码性能上做出比较。
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| 关 键 词： | 二进制化 熵编码 归一化 |
| 文章编号： | 1007-7022（2007）08-0758-05 |
| 收稿时间： | 2007-02-07 |
| 修稿时间： | 2007年2月7日 |
Research on CABAC Entropy Encoding in H.264 Standard |
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| HUANG Bo,JIA Rong,FAN Feng.Research on CABAC Entropy Encoding in H.264 Standard[J].China Cable Television,2007(8):758-762. |
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| Authors: | HUANG Bo JIA Rong FAN Feng |
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| Affiliation: | University of Electronic Science and Technology, Sichuan Chengdu 610054, China |
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| Abstract: | CABAC, Context-based Adaptive Binary Arithmetic Coding, is adopted in main profile in H.264 standard. As a method for entropy encoding of high efficiency, CABAC makes tradeoff between the coding efficiency and the computational complexity by building up a set of probability models based on look-up table and optimizing the operation of multiplication. The coding process for CABAC is explained in this paper, in which the renormalization operation and the selecting of ModelNumber are analyzed, and a comparison between CABAC and CAVLC is also made. |
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| Keywords: | CABAC |
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