| 基于新阈值函数的小波阈去噪研究 |
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| 引用本文： | 韦力强,谭阳红,贺迅宇,龙春阳. 基于新阈值函数的小波阈去噪研究[J]. 计算技术与自动化, 2006, 0(Z2) |
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| 作者姓名： | 韦力强 谭阳红 贺迅宇 龙春阳 |
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| 作者单位： | 湖南大学电气与信息工程学院 湖南长沙410082 |
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| 基金项目： | 教育部项目(NCEF-04-0767)，湖南省科技重点项目(04FJ2003)，湖南大学(521105286)的资助 |
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| 摘 要： | 构造一个新的阈值函数,与传统的软硬阈值函数相比,具有表达式简单、连续性好且高阶可导,便于进行各种数学处理。仿真实验结果表明,采用新的阈值函数的去噪效果在信噪比增益和最小均方误差意义上均优于传统的软硬阈值方法。
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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 De-noising Dlgorithm of Wavelet Threshold Based on New Thresholding Function |
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| WEI Li-qiang,TAN Yang-hong,HE Xun-yu,LONG Chun-yang. A De-noising Dlgorithm of Wavelet Threshold Based on New Thresholding Function[J]. Computing Technology and Automation, 2006, 0(Z2) |
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| Authors: | WEI Li-qiang TAN Yang-hong HE Xun-yu LONG Chun-yang |
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| Abstract: | A novel thresholding function is proposed based on the wavelet shrinkage.This new thresholding function has many other advantages over traditional soft and hard-thresholding functions.It is characterized by its simple expressions,has good continuities and high-order derivatives resulting in mathematics disposals convenient.Simulation results indicate that the proposed de-noising method gives better SNR gains and MSE performance. |
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| Keywords: | wavelet shrinkage threshoulding function SNR MSE |
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