| 基于小波变换的多焦视觉电生理信号去噪研究 |
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| 引用本文： | 张思亮,张思杰,陈振华.基于小波变换的多焦视觉电生理信号去噪研究[J].计算机时代,2011(6):51-53. |
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| 作者姓名： | 张思亮 张思杰 陈振华 |
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| 作者单位： | 1. 重庆市自来水公司,重庆,400013
2. 重庆大学通信工程学院 |
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| 摘 要： | 多焦视觉电生理信号具有较强的随机性和背景噪声,且又属于非线性、非平稳的微弱信号,用Fourier变换来进行去噪处理其效果不是特别理想.小波变换(WT)具有优良的时间-频域分析和多分辨分析特性,可以用来处理非平稳随机信号,能获得更多的、具有诊断价值的信息,因此WT成为多焦视觉电生理信号的一种可行有效的去噪处理方法.文章基...
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| 关 键 词： | 小波变换 多焦视觉电生理信号 多分辨分析 去噪 |
De-noising Research of Multifocal Visual Electrophysiological Signal Based on Wavelet Transform |
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| ZHANG Si-liang,ZHANG Si-jie,CHEN Zhen-hua.De-noising Research of Multifocal Visual Electrophysiological Signal Based on Wavelet Transform[J].Computer Era,2011(6):51-53. |
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| Authors: | ZHANG Si-liang ZHANG Si-jie CHEN Zhen-hua |
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| Affiliation: | 1.Chongqing Water Supply Company,Chongqing 400013,China;2.College of Communication Engineering,Chongqing University) |
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| Abstract: | MMultifocal visual electrophysiological signal has strong randomness and background noise,and it is nonlinear and non-stationary weak signal,the de-noising effect on it is not very well by using Fourier transform.Wavelet transform has excellent time-frequency domain analysis and multi-resolution analysis characteristics,it can be used to process unsteady random signals and can obtain more information with diagnostic value,so it becomes a feasible and effective de-noising method for multifocal visual electrophysiological signals.Based on the theoretical analysis of wavelet transform,we research its application in the de-noising of multifocal visual electrophysiological signal.The experiment illustrates that wavelet transform technique is very well in the de-noising of multifocal visual electrophysiological signals. |
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| Keywords: | wavelet transform multifocal visual electrophysiological signal multi-resolution analysis de-noising |
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