| 分布式视频编码中频域帧的非均衡编码 |
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| 引用本文： | 陶长礼,张健,曹雪虹. 分布式视频编码中频域帧的非均衡编码[J]. 电子工程师, 2012, 38(1): 37-41 |
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| 作者姓名： | 陶长礼 张健 曹雪虹 |
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| 作者单位： | 1. 南京邮电大学通信与信息工程学院,南京,210003
2. 南京工程学院通信与信息工程学院,南京,211167 |
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| 基金项目： | 国家自然科学基金，江苏省属高校自然科学基金 |
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| 摘 要： | 对基于低密度累积校验码(LDPCA)的分布式视频编码(DVC)方案,提出一种非均衡的WZ(频域)帧编码方法.根据视频序列的低频和高频成分所包含信息的不同重要性,对不同频率成分采用不同的编码方法.提取出WZ帧的低频和高频成分；然后分别对低频和高频成分进行基于块的非均衡编码.与传统的低频和高频成分统一编码方法相比,非均衡编码方法具有更好的解码性能.
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| 关 键 词： | 分布式视频编码(DVC) 低密度累积校验码(LDPCA) 非均衡编(解)码 视频编码 |
A Non-equilibrium Encoding Scheme of WZ Frame for Distributed Video Coding |
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| Tao Changli , Zhang Jian , Cao Xuehong. A Non-equilibrium Encoding Scheme of WZ Frame for Distributed Video Coding[J]. Electronic Engineer, 2012, 38(1): 37-41 |
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| Authors: | Tao Changli Zhang Jian Cao Xuehong |
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| Affiliation: | 1. School of Communication and Information Technology, Nanjing University of Posts and Telecommunications, Nanjing 210003, China 2. School of Communication and Information Technology, Nanjing Institute of Technology, Nanjing 211167, China) |
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| Abstract: | According to the high and low frequency components of video sequence which contained differ- ent important information, the components of different frequencies will be encoded with different methods. The high and low frequency components of the frequency domain（Wyner-Ziv; WZ） frame be extracted and then do- ing non-equilibrium Codec based on the block respectively. For the distributed video coding schemes based on low-density parity-check accumulate codes（Low-Density Parity-Cheek Accumulate Codes; LDPCA）, a non-equi- librium Codec method of he frequency domain frame was proposed. Compared with the traditional Codec scheme which the high and low frequency components are unified, the non-equilibrium Codec scheme will have better decoding performance. |
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| Keywords: | distributed video coding（DVC） low-density parity-cheek accumulate codes（LDPCA） non-e-quilibrium codec video coding |
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