| 一般的9-7小波滤波器及其图像压缩性能研究 |
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| 引用本文： | 王国秋,袁卫卫.一般的9-7小波滤波器及其图像压缩性能研究[J].电子学报,2001,29(1):130-132. |
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| 作者姓名： | 王国秋 袁卫卫 |
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| 作者单位： | 1. 湖南师范大学计算机系,长沙 410006;2. 国防科技大学系统工程与数学系,长沙 410073 |
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| 摘 要： | 通过构造一个包含Cohen和Daubechies等人的著名9-7小波滤波器(CDF97)的超小波滤波器族,获得了新的9-7小波滤波器,它们不仅有很好的压缩性能,也有很好的计算性能,有利于ASIC的设计.试验结果表明,新的小波滤波器几乎具有CDF97的客观压缩性能,并且能保留更多的图像细节.因此,在标准化图像压缩系统中,本文的滤波器是CDF97理想的替代者.
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| 关 键 词： | 超小波 滤波器 循环矩阵 图像压缩 |
| 文章编号： | 0372-2112(2001)01-0130-03 |
| 收稿时间： | 1999-11-10 |
Generic 9-7-tap Wavelets Filters and Their Performances Studies on Image Compression |
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| WANG Guo-qiu,YUAN Wei-wei.Generic 9-7-tap Wavelets Filters and Their Performances Studies on Image Compression[J].Acta Electronica Sinica,2001,29(1):130-132. |
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| Authors: | WANG Guo-qiu YUAN Wei-wei |
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| Affiliation: | 1. Dept.f Computer,Hunan Normal University,Changsha 410006,China;2. Dept.of System Engineering & Math,National University of Defense Tech,Changsha 410073,China |
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| Abstract: | This paper constructs a class of 9 7 tap wavelets filters,in which the famous 9 7 tap wavelet (CDF97) of Cohen and Daubechies is contained.New wavelets filters obtained from the class not only have excellent compression performances but also easy computation and are very suitable for design of ASIC.The test results for compression performances have shown that new filters are good almost as CDF97 under PSNR and can save more details.Therefore,the filters constructed in this paper are ideal replacement of CDF97 in standardized image compression systems based on wavelets. |
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| Keywords: | hyper wavelets filters circular matrix image compression |
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