| 整数DCT(BinDCT)快速算法及其在图象压缩中的应用 |
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| 引用本文： | 朱桂华. 整数DCT(BinDCT)快速算法及其在图象压缩中的应用[J]. 湖南文理学院学报(自然科学版), 2002, 14(2): 28-31 |
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| 作者姓名： | 朱桂华 |
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| 作者单位： | 湖南常德师范学院,计算机系,湖南,常德,415003 |
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| 摘 要： | 设计和实现了离散余弦变换 (DCT)的基于提升结构的无乘法快速算法 ,称之为二进制的DCT(binDCT) .它只需移位和加法 .该算法是在基于旋转变换的递归算法基础上设计的 ,将传统的旋转变换相当于 3个提升矩阵乘积减少至2个提升矩阵乘积 ,并且还用到了互换思想 ,从而使算法的运算量比现有算法大为减少
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| 关 键 词： | 离散余弦变换 整数离散余弦变换 二进制离散余弦变换 提升结构 应用 |
| 文章编号： | 1009-3818(2002)02-0028-04 |
| 修稿时间： | 2001-12-13 |
FAST ALGORITHM OF INTEGAR DCT (BINDCT) AND ITS APPLICATION IN IMAGE COMPRESSION |
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| ZHU Gui-hua. FAST ALGORITHM OF INTEGAR DCT (BINDCT) AND ITS APPLICATION IN IMAGE COMPRESSION[J]. Journal of Hunan University of Arts and Science:Natural Science Edition, 2002, 14(2): 28-31 |
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| Authors: | ZHU Gui-hua |
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| Abstract: | Fast multiplierless approximations of the discrete cosine transform(DCT) with the lifting scheme, named the binDCT, which only need shift and addition,was realized. This algorithm was derived from plane rotation-based recursive algorithem, which reduced 3 lifting steps to 2 lifting steps in the plane rotation. What's more, permuted idea was used to cut down the operation quantity. |
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| Keywords: | DCT integer DCT binDCT lifting scheme application |
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