| 一种二维DCT快速算法及其改进 |
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| 引用本文： | 罗小明,王能忠.一种二维DCT快速算法及其改进[J].西南师范大学学报(自然科学版),1997,22(3):271-277. |
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| 作者姓名： | 罗小明 王能忠 |
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| 作者单位： | 西南师范大学计算机科学系 |
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| 摘 要： | 介绍了一种用１ＤＤＣＴ线性组合计算２ＤＤＣＴ的快速算法，并对该算法作了改进和补充．在原始数据预分组时改模Ｎ为模２Ｎ，实现了一次性正确分组，使算法原理简明直观并减少了附加工作量．推导出计算线性组合的具体公式并讨论了它的快速计算，从而提高了该算法的可操作性
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| 关 键 词： | 离散余弦变换 快速算法 图像处理 |
A fast algorithm of 2 D DCT and its improvement |
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| Luo Xiaoming,Wang Nengzhong.A fast algorithm of 2 D DCT and its improvement[J].Journal of Southwest China Normal University(Natural Science),1997,22(3):271-277. |
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| Authors: | Luo Xiaoming Wang Nengzhong |
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| Abstract: | A fast algorithm,which computes the 2 D DCT by liner combination of 1 D DCT,is introduced,improved and complemeted. The original datas is transformed from Mode N into Mode 2N while they are pre divided,and realize proper once division. Thus it makes principle of algorithm concisely and reduces number of added works. The concrete formula which computo liner combination is inquired into and its fast computation is studied and thus the feasibility of this algorithm is improved. |
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| Keywords: | discrete cosine transform fast algorithm image processing |
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