| 基于TMS320C6416的MPEG-2视频压缩优化方案 |
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| 引用本文： | 董文涛,张忠伟,刘勇,安军社.基于TMS320C6416的MPEG-2视频压缩优化方案[J].微电子学与计算机,2012,29(7):128-130. |
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| 作者姓名： | 董文涛 张忠伟 刘勇 安军社 |
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| 作者单位： | 1. 中国科学院空间科学与应用研究中心,北京100190 中国科学院研究生院,北京100190
2. 中国科学院空间科学与应用研究中心,北京,100190 |
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| 摘 要： | 针对嵌入式视频编码的实时性问题,给出了MPEG-2视频压缩算法在TMS320C6416DSP上的优化方法,包括基于EDMA的双缓存设计、线性汇编改写以及对量化计算的改进等.测试结果显示,经过优化后的视频压缩速度得到显著提高,压缩D1视频的速度达到43fps左右,满足实时应用需求.
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| 关 键 词： | 视频压缩 MPEG-2 TMS320C6416 优化 |
Optimization Methods of MPEG-2 Video Compression Algorithm Based on TMS320C6416 |
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| DONG Wen-tao,ZHANG Zhong-wei,LIU Yong,AN Jun-she.Optimization Methods of MPEG-2 Video Compression Algorithm Based on TMS320C6416[J].Microelectronics & Computer,2012,29(7):128-130. |
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| Authors: | DONG Wen-tao ZHANG Zhong-wei LIU Yong AN Jun-she |
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| Affiliation: | 1(1 Center for Space Science and Applied Research,Chinese Academy of Sciences,Beijing 100190,China; 2 Graduate University of Chinese Academy of Sciences,Beijing 100190,China) |
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| Abstract: | Video compression is complex and it is difficult to realize a real-time video encoder on embedded systems.To solve this problem,Optimization methods of MPEG-2 video compression algorithm based on TMS320C6416 DSP platform are given in this paper.These optimization methods include design of double buffering based on EDMA,rewriting of C codes using linear assembly and improvement on quantization.Test results show a significant increase on video compression speed after optimization and D1 video sequences can be encoded at a speed of about 43 frames per second in real time. |
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| Keywords: | video compression MPEG-2 TMS320C6416 optimization |
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