With the increasing application of image processing techniques in various areas, contrast
enhancement still remains as a core pre-processing element that critically affects the …

In this paper, we propose a developed unsharp masking process for contrast image
enhancement. The main idea here is to enhance the dark and bright area in the same way …

Unsharp masking is a popular and simple technique for contrast enhancement and
sharpening in digital images. The basic idea in this technique is to emphasize edges and …

This paper presents a new method for unsharp masking for contrast enhancement of
images. The approach employs an adaptive filter that controls the contribution of the …

The unsharp masking filter (UMF) has been widely used in image processing front ends for
contrast enhancement. The filter, being easy to implement, is based on the concept of …

Image contrast enhancement finds its place in many imaging applications. Unsharp masking
is a classical tool for image contrast sharpening. The basic idea in this method relies on …

Technical limitations in image capturing usually impose defect, such as contrast
degradation. There are different approaches to improve the contrast of an image. Among the …

A new scheme of unsharp masking for image contrast enhancement is presented. An
adaptive algorithm is introduced so that a sharpening action is performed only in locations …

The unsharp masking filter is an efficient and effective algorithm frequently applied in image
contrast enhancement applications. The principle is based on sharpening object edges by …

In this paper, the problem of iterative sharpening for local contrast enhancement is
addressed. We present a fast algorithm that spreads the high frequencies of an image to …