| 小波去噪的一种新的阈值选取方法 |
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| 引用本文： | 董勇,吴传生. 小波去噪的一种新的阈值选取方法[J]. 现代计算机, 2008, 0(9) |
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| 作者姓名： | 董勇 吴传生 |
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| 作者单位： | [1]武汉理工大学理学院,武汉430070 [2]长江大学信息与数学学院,荆州434023 |
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| 摘 要： | 在多分辨分析小渡阈值去噪方法的基础上,介绍了一种基于插值思想的双参数阚值函数.该阈值函数既克服了硬阈值函数不连续的缺点,又修正了软阈值函数存在的恒定偏差.仿真实验的结果表明,去噪效果得到了改善.
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| 关 键 词： | 小波阈值去噪 阈值函数 信噪比 均方误差 |
A New Method of Threshold Selection in Wavelet Denoising |
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| DONG Yong,,WU Chuan-sheng. A New Method of Threshold Selection in Wavelet Denoising[J]. Modem Computer, 2008, 0(9) |
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| Authors: | DONG Yong WU Chuan-sheng |
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| Affiliation: | DONG Yong1,2,WU Chuan-sheng1 (1. School of Science,Wuhan University of Technology,Wuhan 430070,2. School of Information , Mathematics,Yangtze University,Jingzhou 434023) |
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| Abstract: | Based on the multi-analysis wavelet threshold denoising method,using the notion of interpolation, introduces a new threshold function with two ancillary variable. It overcame the shortcoming of the hardthreshold function's discontinuousness and improves the constant error. Numerical simulation results indicate the denoising effects are improved. |
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| Keywords: | Wavelet Threshold Shrinkage Threshold Function MSE(Mean Square Error) SNR(Signal Noise Ratio) |
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