| 一种MPEG-2到AVS帧内转码的快速模式选择算法 |
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| 引用本文： | 陈春汉,张新晨.一种MPEG-2到AVS帧内转码的快速模式选择算法[J].计算机应用,2008,28(Z1). |
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| 作者姓名： | 陈春汉 张新晨 |
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| 作者单位： | 1. 通信指挥学院,基础部,武汉,430010
2. 华中师范大学,物理科学与技术学院,武汉,430079 |
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| 摘 要： | 根据到在变换域中块系数分布能够表达空间方向上的频率分布特性,提出了一种基于变换域系数分布特性与空间方向频率特性之间的对应关系的快速帧内预测编转码算法.实验结果表明该方法能极大的减少帧内转码的计算量,转码视频质量几乎不变.
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| 关 键 词： | 帧内预测 视频转码 变换域 |
Fast intra mode selection for MPEG-2 to AVS video transcoding |
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| CHEN Chun-han,ZHANG Xin-chen.Fast intra mode selection for MPEG-2 to AVS video transcoding[J].journal of Computer Applications,2008,28(Z1). |
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| Authors: | CHEN Chun-han ZHANG Xin-chen |
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| Affiliation: | CHEN Chun-han1,ZHANG Xin-chen2(1.Department of Foundation,College of Wuhan Communication , Comm,,Wuhan Hubei 430010,China,2.College of Physical Science , Technology,Central China Normal University,Wuhan Hubei 430079,China) |
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| Abstract: | In this paper,we propose an efficient intra-prediction mode selection algorithm for MPEG-2 to AVS video transcoding.Firstly,we analyze the process of intra prediction of AVS.Using DCT coefficients from MPEG-2 decoder,we estimate the transform domain energy distributing and choice the best mode for intra-prediction.Bases on this,a fast intra-prediction mode decision algorithm can availably reduce the computation cost.The simulation results of many test sequences show that the proposed algorithm increases the... |
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| Keywords: | intra prediction video transcoding transform domain |
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