The weight function of the non-local means denoising method has a certain degree of irrationality at edges

in which cannot distinguish between the denoising roles of the patches at the two sides of an edge. However

when the center pixel of the patch gets more attention

the different denoising roles can be measured. In the light of the bilateral filtering method

the weight function of the non-local means method is revised. Experimental results on several images show that our new method greatly outperforms the classical non-local means method

and it has certain advantages over the latest improved non-local means method.