Digital image processing (2nd ed.)
Digital image processing (2nd ed.)
Fundamentals of digital image processing
Fundamentals of digital image processing
Active Computer Vision by Cooperative Focus and Stereo
Active Computer Vision by Cooperative Focus and Stereo
IEEE Transactions on Image Processing
Fuzzy Two-Step Filter for Impulse Noise Reduction From Color Images
IEEE Transactions on Image Processing
A Fuzzy Noise Reduction Method for Color Images
IEEE Transactions on Image Processing
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Image sharpening refers to any enhancement technique that highlights edges and fine details in an image. The conventional methods for sharpening the images has several drawbacks such as, complex and slow calculations, color loss, anisotropy effects etc. In this paper, a new fuzzy filter is proposed for sharpening the color images. The sharpening fuzzy filter consists of two sub-filters. The first sub-filter computes fuzzy distances between the central pixel and its neighbourhood for each color component. These distances determine the edge information present at each pixel. The purpose of the second sub-filter is to apply a sharpening parameter ï戮驴and a correction term ï戮驴to each pixel neighbourhood (3×3 window) thereby enhancing the edge information to get the sharpened image. The performance of the filter has been tested on various standard images and comparison is done both visually and quantitatively with other conventional sharpening filters.