| 基于小波变换及子带阈值的彩色图像降噪 |
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| 引用本文： | 崔夏荣.基于小波变换及子带阈值的彩色图像降噪[J].南平师专学报,2008,27(2):47-51. |
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| 作者姓名： | 崔夏荣 |
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| 作者单位： | 武夷学院电子工程系,福建武夷山354300 |
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| 基金项目： | 福建省自然科学基金项目（A0640014）. |
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| 摘 要： | 提出了一种对彩色图像降噪的新方法，该方法先把彩色图像分解为红、绿、蓝3个基色图像，然后利用小波变换分别对3个基色图像进行多尺度分解，求出其各个尺度三个方向高频系数的子带阈值，并组成1个子带阈值矩阵，对单基色图像的各个尺度3个方向的高频系数进行阈值处理，实现对单基色图像的降噪，最后把降噪后的3个基色图像融合为一幅彩色图像。实验结果表明该方法可以很好地消除噪声，又可以较好地保持图像细节。
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| 关 键 词： | 小波变换 子带阈值 图像降噪 |
Color Image Denoising Based on Wavelet Transform and Subband Threshold |
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| CUI Xiarong.Color Image Denoising Based on Wavelet Transform and Subband Threshold[J].Journal of Nanping Teachers College,2008,27(2):47-51. |
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| Authors: | CUI Xiarong |
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| Institution: | CUI Xiarong (Electronic Engineering Department of Wuyi College, Wuyishan,Fujian 354300) |
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| Abstract: | A new method is proposed to reduce noise of color image.Firstly,color image is separated to three base color images of redness,greenness and blueness.Then three base color images are decomposed respectively by wavelet transform with more scale,subband thresholds of high frequency coefficients in three directions of different scale are computed,and the matrix is composed of subband thresholds,high frequency coefficients in three direction at different scale of single base color image are dealt with different subband threshold,so the single base color image is denoised.Finally,the three base color images after denoising are fused to a color image.Experiment results show that noise of color image can be reduced effectively and image details can be preserved a lot by using this method. |
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| Keywords: | Wavelet transform subband threshold image denoising |
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