光通信研究Issue(2)：75-78,4.DOI:10.13756/j.gtxyj.2018.02.021
一种改进的小波阈值去噪方法
An Improved Wavelet Threshold Denoising Method
张振凤 1威欢 1谭博文1
作者信息
- 1. 重庆邮电大学 通信与信息工程学院,重庆 400065
- 折叠
摘要
Abstract
In the wavelet threshold denoising,it is important to choose the threshold.In order to overcome the shortcomings of traditional fixed thresholds on each scale,a new wavelet threshold denoising method is proposed in this paper.The improved threshold can be changed with the number of decomposed layers,as it is shown flexibility in practice situation.In this paper, Signal Noise Ratio (SNR)and Mean Square Error(MSE)are used as the parameters to evaluate the denoising performance. Compared with the traditional threshold,the simulation results show that the denoising effect based on the improved wavelet threshold denoising method is better than the traditional wavelet denoising based on sqtwolog,rigrsure,heursure and minimaxi wavelet threshold.The improved wavelet threshold denoising method has a high practical value.关键词
小波阈值去噪/阈值/信噪比/均方误差Key words
wavelet threshold denoising/threshold/SNR/MSE分类
信息技术与安全科学引用本文复制引用
张振凤,威欢,谭博文..一种改进的小波阈值去噪方法[J].光通信研究,2018,(2):75-78,4.
