标题：Improvement and simulation analysis of threshold denoising algorithm
作者：Liu, Yanxia ;Li, Yan ;Dong, Beibei ;Cao, Yanyan ;Ma, Yanli
作者机构：[Liu, Yanxia ;Dong, Beibei ;Cao, Yanyan ;Ma, Yanli ] College of Information Science and Engineering, Hebei North University, Hebei, China;[Li, Yan ] D 更多
会议名称：2012 2nd International Conference on Machinery Electronics and Control Engineering, ICMECE 2012
会议日期：December 29, 2012 - December 30, 2012
来源：Applied Mechanics and Materials
摘要：According to the characteristics of image wavelet decomposition and statistical characteristics of high frequency wavelet coefficients after wavelet decomposition, this article improves the traditional threshold function de-noising algorithm. Improved threshold function not only overcomes wavelet coefficient discontinuity caused by hard threshold function de-noising and certain deviation witch always exists between wavelet coefficients caused by soft threshold function de-noising and its real value. The experimental results show that, the improved threshold function de-noising results are better than traditional soft and hard threshold method either in the visual effects, or the PSNR gain. © (2013) Trans Tech Publications, Switzerland.