期刊文献+

小波去噪的一种新的阈值选取方法

A New Method of Threshold Selection in Wavelet Denoising
下载PDF
导出
摘要 在多分辨分析小波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阈值函数。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。 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.
作者 董勇 吴传生
出处 《现代计算机》 2008年第9期60-62,92,共4页 Modern Computer
关键词 小波闽值去噪 阈值函数 信噪比 均方误差 Wavelet Threshold Shrinkage Threshold Function MSE(Mean Square Error) SNR(SignalNoise Ratio)
  • 相关文献

参考文献8

  • 1Donoho D.L.,Johnston I M. Ideal Spatial Adaptation Via Wavelet Shrinkage. Biometrika,1994,81(12): 425-455
  • 2Donoho D.L. De-noising by Soft-Thresholding. IEEE Trans on IT,1995,41(3):613-627
  • 3Donoho D.L.,Johnston I M. Adapting to Unknown Smoothness Via Wavelet shrinkage.Journal of American Stat Assoc, 1995,12(90): 1200-1224
  • 4ZHANG X L, LAINE A F,GEISER E A. Speckle Reduction and Contrast Enhancement of Echocardiograms Via Multiscale Nonlinear. IEEE Transactions on Medical Image, 1998, 17(4):532-540
  • 5戴朝华,朱云芳,陈维荣.一种新的小波消噪阈值选取方法[J].组合机床与自动化加工技术,2005(6):33-35. 被引量:10
  • 6徐晨,赵瑞珍,甘小冰.小波分析·应用方法.北京:科学出版社,2004,5:162-168
  • 7桂延宁,焦李成,张福顺.航空制导炸弹惯性参数遥测中的小波去噪[J].西安电子科技大学学报,2003,30(1):117-119. 被引量:10
  • 8张秀秀,赵薇,李封,王旭.3σ准则在心电信号小波消噪处理中的应用[J].机械设计与制造,2006(11):107-109. 被引量:3

二级参考文献18

  • 1季虎,孙即祥,林成龙.基于离散平稳小波变换的心电信号去噪方法[J].计算机应用,2005,25(6):1318-1320. 被引量:10
  • 2StephaneMallat著 杨力华 译.信号处理的小波导引(第2版)[M].北京:机械工业出版社,2002..
  • 3Donoho, D. L, Johnstone, 1. M.. Adapting to. unknown smoothness via wavelet shrinkage[J]. J. Am. Statist Ass., 1995,90(432):1200-1224.
  • 4Donoho, D. L.. De-Noising by soft-thresho-lding [J]. IEEE Trans. on IT. 1995,41(3):613-627.
  • 5Andrew B, Gao Hongye. Wave Shrinkage Function and Thresholds[J]. SPIE, 1995,2569:270-281.
  • 6Xuli Zong, Andrew F. Kaine, and Edward A. Geiser. Speckle Reduction and Contrast Enhancement of Echocardiograms via Muhiscale Nonlinear Proc.essing[J]. IEEE trans. Med. Imag. 1998,17(4):532-540.
  • 7Pasti, L., Walezak, B., Massml, D. L, Reschiglian, P.. Optimization of signal denoising in discrete wavelet transform. Chemometrics and Intelligent Laboratory Sestems. 1999,48(6):21-34.
  • 8Daubechies. Ten Lectures on Wavelets. CBMS-Conference Leeture Notes[ MI. SIAM Philadelphia: SIAM V.6, 1992.
  • 9COHEN A,DAUBECHIES I,FEAUVEAU J C. Biorthogonal Bases of Compactly Supported Wavelets[J]. Commun. on Pure and Appl. Math. , 1992,45(4) :485 - 560
  • 10Mallat S. Multiresolution Approximation and Wavelet Orthonormal Bases of L2. Trans Amer Math Soc, 1989,315 : 69 - 87.

共引文献20

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部