| 适用于H.264标准的变长分组VLD结构 |
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| 引用本文： | 吴斌,郭树旭,王明江,郑凡,陈玫玫.适用于H.264标准的变长分组VLD结构[J].东北师大学报(自然科学版),2009,41(1). |
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| 作者姓名： | 吴斌 郭树旭 王明江 郑凡 陈玫玫 |
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| 作者单位： | 1. 吉林大学电子科学与工程学院,吉林,长春,130012
2. 哈尔滨工业大学深圳研究生院,广东,深圳,518055 |
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| 摘 要： | 在新一代视频压缩编码标准H.264中,亮度和色度的残差数据采用了自适应变长编码的方法.根据CAVLC熵编码的特点,提出了一种根据码表的前导零个数进行变长分组的优化VLD结构,并在此基础上设计了CAVLC硬件解码器.基于上述方法实现的CAVLC硬件结构通过了RTL级仿真和综合,并在Spartan3 XC3S2000的FPGA平台上进行了验证,在133 MHz工作频率下可以满足H.264标准Baseline档次30帧/s分辨率为352×288标准视频序列的实时解码.
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| 关 键 词： | 熵编码 基于上下文自适应的可变长编码 变长解码 |
A variable length group VLD architecture for H.264 decoder |
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| WU Bin,GUO Shu-xu,WANG Ming-jiang,ZHENG Fan,CHEN Mei-mei.A variable length group VLD architecture for H.264 decoder[J].Journal of Northeast Normal University (Natural Science Edition),2009,41(1). |
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| Authors: | WU Bin GUO Shu-xu WANG Ming-jiang ZHENG Fan CHEN Mei-mei |
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| Institution: | WU Bin1,GUO Shu-xu1,WANG Ming-jiang2,ZHENG Fan1,CHEN Mei-mei1(1.College of Electronics Science and Engineering,Jilin University,Changchun 130012,China,2.Shenzhen Graduate School,Harbin Institute of Technology,Shenzhen 518005,China) |
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| Abstract: | In H.264,the residual data is encoded by CAVLC.According to the characteristic of CAVLC,an optimized VLD architecture of variable-length group based on number of leading zeros is proposed for H.264 CAVLC hardware decoder.The decoder has passed RTL class emulation and synthesis,and has been verified on Spartan3 XC3S2000 FPGA platform.Under 133 MHz working frequency,the CAVLC decoder can satisfy the quality and speed requirements of real-time video decoding on Baseline profile of H.264 with fps of 30F/s and r... |
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| Keywords: | H 264 |
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