An Variable Coefficient Images Denoising Method

Abstract

Proposed An images denoising method by using variable coefficient in filtering. The key point is using different coefficient to minimize the influence of each gray values of the pixels as is regarded as black noise and white noise and choosing a threshold to decided which filter will be used as the most suitable one. Usually,a image is polluted by Gaussian noise and impulse noise simultaneously, It cannot be obtained if only using one of them,though both median and average filter are used inimage denoising in obtain the edge as well as detail characteristics of impulse noise image and smoothing Gaussiannoise respectively when denoising in spatial space. Experimental results show that the variable coefficient method can improve the quality of images than the classical methods.