数据采集与处理2013，Vol.28Issue(3)：371-375,5.
基于小波熵和相关性的高分辨率阈值去噪方法
High-Resolutiont Threshold Denoising Method Based on Wavelet Entropy and Correlation
摘要
Abstract
A high-resolution threshold denoising method combined wavelet entropy with correlation is proposed.The correlation of the effective signal and noise is different.The effective signal location is determined by the correlation processing of high-frequency wavelet coefficient of each level,and the high-frequency wavelet coefficient of the effective signal is zero.The retained high-frequency wavelet coefficient is caused by noises.The high-frequency wavelet coefficient of each level is divided into several small zones,and the interval wavelet entropy is calculated,with the mean value of high-frequency wavelet coefficients in the wavelet entropy maxima interval as noise standard deviation.Threshold value of each level is calculated.The retained coefficient is processed by soft-threshold and the denoised signals are reconstructed.The improved method realizes adaptive selection of threshold values of each level and the improved signal-to-noise radio simulation verifies the effectiveness of the improved method.关键词
小波阈值/小波熵/相关性/去噪Key words
wavelet threshold/wavelet entropy/correlation/denoising分类
信息技术与安全科学引用本文复制引用
李文,刘霞,段玉波,姚建红,刘继承..基于小波熵和相关性的高分辨率阈值去噪方法[J].数据采集与处理,2013,28(3):371-375,5.基金项目
教育部科学技术研究基金重点(210056)资助项目 （210056）
教育部新世纪人才计划(NCET-09-0127)资助项目 （NCET-09-0127）
黑龙江省新世纪人才计划(1154NCET001)资助项目. （1154NCET001）
