A new method of image denoising based on wavelet transform
Musheng Chen · Optical Technique · 2006
According to analysis of the characteristic of wavelet transform and statistical character of wavelet coefficient,a new wavelet threshold function was presented.Comparing with conventional soft and hard threshold function,this new threshold function has considered the distribution of image energy.Each wavelet coefficient multiplication by different denoising factor,so it is a simple and adaptive denoising algorithm.Experimental results show that the denoising algorithm can mitigate the mosaic appearance effectively and the numerical results also show that the new algorithm give better PSNR gains than conventional soft and hard threshold algorithm.