AUTHOR=Kheradmand Amin , Milanfar Peyman TITLE=Non-Linear Structure-Aware Image Sharpening with Difference of Smoothing Operators JOURNAL=Frontiers in ICT VOLUME=2 YEAR=2015 URL=https://www.frontiersin.org/journals/ict/articles/10.3389/fict.2015.00022 DOI=10.3389/fict.2015.00022 ISSN=2297-198X ABSTRACT=

In this paper, we propose an effective data-adaptive filtering mechanism for sharpening of noisy and moderately blurred images. We establish the connection of our proposed data-adaptive filtering procedure with the classic Difference of Gaussians (DoG) operator widely used in image processing and computer graphics. Our proposed filter renders a data adaptive and noise robust version of the classical DoG filter. We also discuss interesting special cases of our general sharpening method. Experimental results verify the effectiveness of the proposed technique for sharpening real images.