Nonlinear algorithm based on edge diffusion for medical image denoising
HU Shao-xiang · Jisuanji yingyong yanjiu · 2011
It is necessary to keep the edge details while removing the noise of the medical image,for the purpose of the further diagnosis.This paper proposed a nonlinear denoising algorithm based on edge diffusion according to the disadvantages of the PM algorithm and the Catte algorithm.It divided image into the edge and the no-edge through the edge detection algorithm,the edge area denoised by the isotropic algorithm,the no-edge area denoised by the anisotropic diffusion algorithm,improved the form of diffusion,only along edge direction.Experiments show that the proposed method is very effective,with the noise of medical image denoising through the improved algorithm,image quality got obvious improvement.