| 一种改进的小波变换阈值去噪方法 |
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| 引用本文： | 彭玉华. 一种改进的小波变换阈值去噪方法[J]. 通信学报, 2004, 25(8): 119-123 |
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| 作者姓名： | 彭玉华 |
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| 作者单位： | 山东大学,信息科学与工程学院,山东,济南,250100 |
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| 基金项目： | 山东省中青年科学家科研奖励基金资助项目(9803) |
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| 摘 要： | Donoho等提出了一种基于小波变换的阈值去噪方法,这种方法在信号去噪及数据压缩等领域得到了广泛的应用。但是,Donoho设计的阈值处理方法对脉冲噪声的抑制效果不明显,因此在脉冲噪声存在的情况下,Donoho的阈值处理方法受到了限制。本文在Donoho方法基础上,设计了一种改进的阈值去噪方法,该方法对一大类的噪声信号有效,特别在保护信号边缘的同时去除脉冲噪声方面表现出了很好的特性。实验结果证实了该方法的有效性。
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| 关 键 词： | 信号与信息处理 小波变换 去噪 阈值处理 |
| 文章编号： | 1000-436X(2004)08-0119-05 |
| 修稿时间： | 2003-06-19 |
An improved thresholding method in wavelet transform domain for denosing |
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| PENG Yu-hua. An improved thresholding method in wavelet transform domain for denosing[J]. Journal on Communications, 2004, 25(8): 119-123 |
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| Authors: | PENG Yu-hua |
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| Abstract: | Donoho et al have proposed A method for de-noising by thresholding [1,2] , and indeed, their method has been used in many signal de-noising and compression problems. But the method of Donoho is not successful for impulsive noises. This paper, we proposed a new improvement thresholding method, which can be used to more widely kind of noisy signal, and the noises even if impulsive noises can be decreased well. Examples are performed to illustrate the advantages of this approach. |
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| Keywords: | signal and information processing wavelet transform de-noising thresholding procession |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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