| 基于DSP平台的H.324系统研究与实现 |
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| 引用本文： | 欧建平,楼生强,皇甫堪.基于DSP平台的H.324系统研究与实现[J].国防科技大学学报,2002,24(6):64-66 ,70. |
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| 作者姓名： | 欧建平 楼生强 皇甫堪 |
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| 作者单位： | 国防科技大学电子科学与工程学院,湖南,长沙,410073 |
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| 摘 要： | 在分析H.324系统中双向视音频编解码所需要的运算量和存储容量的基础上,选择两片高速DSP芯片TMS320VC5509,合理分配资源,对视频编解码中关键代码进行优化,设计和实现了双向视音频编解码的实时H.324系统。特别是在定点DSP上采用了整数变换代替浮点DCT,消除了浮点运算,减少了运算量,给出了实验结果。
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| 关 键 词： | H.324 H.263 DSP 视频编解码 音频编解码 整数变换 |
| 文章编号： | 1001-2486(2002)06-0064-03 |
| 收稿时间： | 2002/9/25 0:00:00 |
| 修稿时间： | 2002年9月25日 |
The Research and Realization of H.324 System Based on DSP |
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| OU Jianping,LOU Shengqiang and HUANGPU Kan.The Research and Realization of H.324 System Based on DSP[J].Journal of National University of Defense Technology,2002,24(6):64-66 ,70. |
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| Authors: | OU Jianping LOU Shengqiang and HUANGPU Kan |
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| Institution: | College of Electronic Science and Engineering,National Univ.of Defense Technology,Changsha 410073,China;College of Electronic Science and Engineering,National Univ.of Defense Technology,Changsha 410073,China;College of Electronic Science and Engineering,National Univ.of Defense Technology,Changsha 410073,China |
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| Abstract: | The basic construction of H.324 is introduced first. Two DSP chips named TMS320VC5509 are selected to realize real time H.324 system by the analysis of calculating capacity and memory capacity needed in video and audio codec. In this design the resources in DSP are allocated reasonably, the key parts of video codec are optimized. In order to eliminate float operation in fixed point DSP,float-point DCT is replaced by integer transform. The experiment result is finally presented. |
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| Keywords: | H 324 H 263 DSP video codec audio codec integer transform |
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