| 基于Cell的H.264关键算法的移植研究 |
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| 引用本文： | 刘虎,陈启美. 基于Cell的H.264关键算法的移植研究[J]. 仪表技术, 2008, 0(2): 9-11,15 |
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| 作者姓名： | 刘虎 陈启美 |
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| 作者单位： | 南京大学,电子科学与工程系,江苏,南京,210093 |
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| 摘 要： | 在介绍Cell结构和并行计算等特点的基础上,文章描述了关于H.264编码算法的移植与优化关键技术.其中着重对最耗时的DCT/IDCT变换、运动估计/补偿等关键模块进行了移植;同时采用SIMD技术对算法进行了优化.实验结果表明,关键算法优化后的处理速度可提高3～7倍,取得了良好的效果.
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| 关 键 词： | Cell H.264 整数DCT变换 运动估计 优化 向量 Cell 法的移植 研究 Transplant Research Based 效果 速度 处理 算法优化 结果 实验 SIMD 关键模块 补偿 运动估计 变换 IDCT 编码 描述 |
| 文章编号： | 1006-2394（2008）02-0009-03 |
| 收稿时间： | 2007-08-01 |
| 修稿时间： | 2007-08-01 |
Research and Transplant of H.264 Key Algorithms Based on Cell |
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| LIU Hu,CHEN Qi-mei. Research and Transplant of H.264 Key Algorithms Based on Cell[J]. Instrumentation Technology, 2008, 0(2): 9-11,15 |
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| Authors: | LIU Hu CHEN Qi-mei |
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| Abstract: | According to the structure of the cell processor as well as the characteristics of parallel computation, the key technique of the transplant and improvement of algorithms of H.264 is described in this paper. The most time-consuming modules of H.264 such as DCT, IDCT and motion prediction/compensation are mainly discussed. Optimization techniques of SIMD are adopted to optimize some key algorithms. Experimental results indicate that the processing speed can be enhanced by 3 -7 times and better performance can be achieved after the optimization of core algorithms. |
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| Keywords: | Cell H.264 integer transform motion prediction optimization vector |
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