| H.264编码器中插值运算和整数变换的优化 |
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| 引用本文： | 蒋汉琪,朱秀昌.H.264编码器中插值运算和整数变换的优化[J].南京邮电大学学报(自然科学版),2005,25(3):41-44. |
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| 作者姓名： | 蒋汉琪 朱秀昌 |
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| 作者单位： | 南京邮电大学,信息工程系,江苏 南京,210003 |
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| 摘 要： | 首先分析了H.264编码器中运算密集的插值和整数变换过程;然后对其进行算法改进和优化,给出整数变换的全零预先判决方法;最后以整数变换为例,使用Intel的MMX技术优化运算密集模块。优化后,测试表明插值运算和整数变换模块运行速度有数倍提高。
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| 关 键 词： | H.264 插值 整数变换 MMX |
| 文章编号： | 1000-1972(2005)03-0041-04 |
| 修稿时间： | 2004年6月29日 |
Optimization of Interpolation and Integer Transform on H.264 Encoder |
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| JIANG Han-qi,ZHU Xiu-chang.Optimization of Interpolation and Integer Transform on H.264 Encoder[J].Journal of Nanjing University of Posts and Telecommunications,2005,25(3):41-44. |
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| Authors: | JIANG Han-qi ZHU Xiu-chang |
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| Institution: | JIANG Han-qi,ZHU Xiu-changDepartment of Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China |
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| Abstract: | In this paper,we analyze the process of interpolation and integer transform at first.Then we improve their algorithms and propose a method to pre-detect all-zero coefficient blocks in integer transform.At last we optimize integer transform with Intel MMX technology.After optimization,the interpolation and integer process are speeded up by several times. |
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| Keywords: | H 264 Interpolation Integer-transform Multimedia extension |
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