| 一种提高双正交小波消失矩的算法及其在图像编码中的应用 |
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| 引用本文： | 黄敏.一种提高双正交小波消失矩的算法及其在图像编码中的应用[J].计算机工程与应用,2004,40(33):76-77. |
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| 作者姓名： | 黄敏 |
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| 作者单位： | 安徽省电信公司芜湖分公司,安徽,芜湖,241000 |
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| 摘 要： | 文章介绍了一种提高任意双正交小波消失矩的方法。此法根据小波的消失矩与其对应FIR滤波器的Laurent多项式在z=1处零点阶数相等的关系,基于提升格式采用迭代法设计提升系数,便于工程实现。在图像压缩编码中,用此法可方便地提高所选小波的消失矩,改变滤波器的性能,获得所需的新小波,从而实现预期目标。
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| 关 键 词： | 提升格式 双正交小波 图像编码 |
| 文章编号： | 1002-8331-(2004)33-0076-02 |
An Algorithm of Lifting Vanishing Moments of Biorthogonal Wavelet and its Application to Image Coding |
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| Huang Min.An Algorithm of Lifting Vanishing Moments of Biorthogonal Wavelet and its Application to Image Coding[J].Computer Engineering and Applications,2004,40(33):76-77. |
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| Authors: | Huang Min |
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| Abstract: | In this paper,an algorithm used to increase the vanishing moments of biorthogonal wavelets from arbitrary wavelet is proposed.It is based on the relationship between the vanishing moments of wavelet and the multiplicity of zero at z=1of Laurent polynomial corresponding FIR filters,i.e.,the order of the former are the same as the latter.According to lifting scheme ,designing lifting coefficients by iteration is presented.This algorithm can be applied in image coding to lift the vanishing moments of selected wavelet for changing the properties of associated FIR filters.Consequently,the expected goal can be obtained from the new wavelet for special purpose. |
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| Keywords: | lifting scheme biorthogonal wavelet image coding |
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