IMAGE DENOISING METHOD AND IMAGE DENOISING APPARATUS

摘要

The present invention provides an image denoising method and an image denoising apparatus. Wherein the image denoising method comprises: performing preliminary denoising processing to an acquired image to be processed, so as to obtain a preliminarily denoised image; calculating a residual quantity corresponding to a central pixel of each unit area in the image to be processed according to numerical values of specific energy parameters to which the image to be processed and the preliminarily denoised image correspond, respectively; and using the residual quantity to calculate a weight matrix corresponding to each unit area, and performing non-local mean value calculation to the image to be processed according to the weight matrix, so as to realize the denoising processing of the image to be processed. The image denoising method according to the present invention is able to denoise effectively, and make a denoised image more visually natural.