Adaptive Sharpening with Overshoot Control

Authors:
Antonio Buemi;Gaetano Santoro;Arcangelo Bruna;Mirko Guarnera
Affiliations:
ST Microelectronics, AST Catania Lab, Imaging Group, Catania, Italy 95121;ST Microelectronics, AST Catania Lab, Imaging Group, Catania, Italy 95121;ST Microelectronics, AST Catania Lab, Imaging Group, Catania, Italy 95121;ST Microelectronics, AST Catania Lab, Imaging Group, Catania, Italy 95121
Venue:
ICIAP '09 Proceedings of the 15th International Conference on Image Analysis and Processing
Year:
2009

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Abstract

This paper presents the Adaptive Sharpening with Overshoot Control (ASOC), an algorithm for digital image contrast enhancement. The ASOC exploits a properly defined band-pass filter in order to better discriminate the "uniform/not uniform" zones of the input (blurred) image. A more aggressive sharpening is then performed on the textured zones, whilst the homogeneous regions are preserved.