De-noising is a classic problem in image processing, however, keep the image edges and details characteristics and de-noising is a contradiction of the relationship. Based on this defect, in this paper, the curvature and gradient are introduced to improve the operator of direction diffusion, which is able to remove the noise t also makes a good save edge features and details of the role, inhibit noise isolation at the same time. Experimental results show that the image de-noising methods can have good results.
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