| 基于第二代小波变换的图像除噪 |
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| 引用本文： | 董楠,蒋本和,徐福泽.基于第二代小波变换的图像除噪[J].烟台大学学报(自然科学与工程版),2007,20(1):40-43. |
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| 作者姓名： | 董楠 蒋本和 徐福泽 |
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| 作者单位： | 烟台大学,光电信息科学技术学院,山东,烟台,264005 |
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| 摘 要： | 讨论了第二代小波变换的基本原理和变换过程,并将第二代小波变换引入到图像信号除噪处理中.提升方案采用的是Deslauriers-Dubuc(4,2)小波,分别对含噪的图像信号进行三级可逆提升变换,对每一级上的细节信号按软阈值法进行处理,削减小波系数中的噪声部分,从而实现了信号去噪.结果表明,去除高斯白噪声的效果令人满意,提升方法设计灵活、计算简单.
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| 关 键 词： | 小波变换 提升方法 图像除噪 |
| 文章编号： | 1004-8820（2007）01-0040-04 |
| 收稿时间： | 2006-03-24 |
| 修稿时间： | 2006-03-24 |
Application of Lifting Wavelet Transform in Image Denoising |
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| DONG Nan,JIANG Ben-he,XU Fu-ze.Application of Lifting Wavelet Transform in Image Denoising[J].Journal of Yantai University(Natural Science and Engineering edirion),2007,20(1):40-43. |
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| Authors: | DONG Nan JIANG Ben-he XU Fu-ze |
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| Institution: | Institute of Science and Technology for Opto-Electronics Information, Yantai University, Yantai 264005, China |
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| Abstract: | The principle and procedures of the second-generation wavelet transform are discussed,and applied to the denoising of noising image.Deslauriers-Dubuc(4,2) wavelet transforms are used to process image data in lifting wavelet transform. Denoising is done in the high frequency sub-bands at each level by soft-threshold.The processing results show that gaussian-noise is effectively suppressed and the signal to noise ratio improves remarkably.The lifting wavelet transform is an efficient algorithm. |
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| Keywords: | wavelet transform lifting scheme image denosing |
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