An image sharpening algorithm based on fuzzy logic

This paper presents a solution to the problem of enhancing the spatial local contrast of images with nonlinear module. The proposed method that exploits the undecimated discrete fuzzy logic has much reduced noise sensitivity with respect to the linear unsharp masking technique and it permits to obtain perceptually pleasant results. The proposed method also compares favorably with other algorithms which recently have been studied to improve the behavior of the unsharp masking approach. And results are presented and discussed on different images.