| 基于逼近阶的向量小波预滤波方法 |
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| 引用本文： | 林富春,李红,金亮. 基于逼近阶的向量小波预滤波方法[J]. 华中科技大学学报(自然科学版), 2002, 30(7): 98-100 |
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| 作者姓名： | 林富春 李红 金亮 |
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| 作者单位： | 华中科技大学数学系 |
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| 基金项目： | 国防科技预研基金资助项目 (5 14 0 10 2 0JW 0 5 0 6 ) |
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| 摘 要： | 预滤波是向量小波变换的关键问题，为此就一类具有一定逼近阶的预滤波方法作了详细的讨论，并给出了具体的设计方法。实验表明，这种预滤波方法简单、易行，而且它的能量聚集比很高。
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| 关 键 词： | 向量小波变换 预滤波 逼近阶 能量比 能量聚集 CL向量小波 Daubechies4小波 图像信号处理 |
| 文章编号： | 1671-4512(2002)07-0098-03 |
A class of approximation-order prefilter method for multiwavelets |
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| Lin Fuchun Li Hong Jin Liang Postgraduate, Dept. of Math.,Huazhong Univ. of Sci. , Tech.,Wuhan ,China.. A class of approximation-order prefilter method for multiwavelets[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 2002, 30(7): 98-100 |
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| Authors: | Lin Fuchun Li Hong Jin Liang Postgraduate Dept. of Math. Huazhong Univ. of Sci. & Tech. Wuhan China. |
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| Affiliation: | Lin Fuchun Li Hong Jin Liang Postgraduate, Dept. of Math.,Huazhong Univ. of Sci. & Tech.,Wuhan 430074,China. |
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| Abstract: | The prefiltering was the necessary process in multiwavelets transform. A class of prefilter based on approximation order was described completely, and the construction of this prefilter was given. As an example, the prefilter of CL multiwavelets was presented. The experimental results showed that the method was very simple and the energy ratio was higher than that of Daubechies 4 wavelet. |
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| Keywords: | multiwavelets prefilter approximation order energy ratio |
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