| 整型2D-IDCT算法的优化与实现 |
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| 引用本文： | 胡小涛,梁利平.整型2D-IDCT算法的优化与实现[J].电视技术,2013,37(19). |
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| 作者姓名： | 胡小涛 梁利平 |
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| 作者单位： | 中国科学院微电子研究所,北京,100029 |
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| 摘 要： | 基于DSP平台,针对2D-IDCT运算复杂的特点,对8×8整型离散余弦变换(DCT)正反变换算法进行优化,在运算精度上提出改进,得到最佳参数参与运算,运算结果符合IEEE Standard 1180-1990标准要求.在此标准基础上利用DSP平台特性,在实现上进行多级优化并采用并行流水线结构,使一次IDCT计算耗时在140个周期内.
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| 关 键 词： | 2D-IDCT算法 IEEE Standard 1180-1990 流水线 |
| 收稿时间： | 2013/1/21 0:00:00 |
| 修稿时间： | 2013/2/26 0:00:00 |
Optimization and Implementation of Integer 2D-IDCT Algorithms |
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| huxiaotao and liangliping.Optimization and Implementation of Integer 2D-IDCT Algorithms[J].Tv Engineering,2013,37(19). |
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| Authors: | huxiaotao and liangliping |
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| Institution: | Institute of Microelectronics of Chinese Academy of Science,Institute of Microelectronics of Chinese Academy of Science |
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| Abstract: | With the widespread use of MPEG-2, IDCT was widely researched since it has great signification. This paper proposes to research the 2D-IDCT algorithm based on the DSP platform and get the best way to calculate it. Improve the precision of the algorithm. The results have to accord with IEEE standard 1180-1990. It also use the pipeline to improve the calculate capability, and it cost less than 140 cycles per block finally. |
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| Keywords: | 2D-IDCT algorithm IEEE Standard 1180-1990 pipeline |
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