| 基于小波变换模极大值的脉冲噪声去除方法 |
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| 引用本文： | 潘金凤.基于小波变换模极大值的脉冲噪声去除方法[J].山东理工大学学报,2007,21(5):69-72. |
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| 作者姓名： | 潘金凤 |
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| 作者单位： | 山东理工大学工程技术学院 山东淄博255049 |
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| 摘 要： | 根据小波系数模极大值的特性,提出了去除脉冲噪声的一种新方法.由于脉冲噪声往往造成信号的突变,所以经小波变换后其小波系数易成为模局部极大值.由突变点的模极大值随着小波分解尺度的增大而减小的性质,可采取去除具有此种性质的模极大值的方法去除脉冲噪声.此方法也能很好的去除白噪声,因为白噪声与脉冲噪声的模极大值具有相同的特点.
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| 关 键 词： | 脉冲噪声 小波变换 模极大值 去噪 |
| 文章编号： | 1672-6197（2007）05-0069-04 |
| 修稿时间： | 2007-03-09 |
Impulse noise de-noising based on wavelet transform modulus maximum |
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| PAN Jin-feng.Impulse noise de-noising based on wavelet transform modulus maximum[J].Journal of Shandong University of Technology:Science and Technology,2007,21(5):69-72. |
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| Authors: | PAN Jin-feng |
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| Institution: | School of Engineering Technology, Shandong University of Technology, Zibo 255049, China |
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| Abstract: | A new method of impulse de-noising is proposed based on wavelet modulus maximums.Because of its large value the wavelet coefficients of impulse noise are modulus maximums which would decrease while wavelet decomposing scale increasing,so we can reduce these modulus maximums to remove impulse noise.This method is also effective for white noise because its modulus maximum has the same character with impulse noise's. |
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| Keywords: | impulse noise wavelet transform modulus maximum denoising |
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