Contrast image correction method

Raimondo Schettini; Francesca Gasparini; Silvia Corchs; Fabrizio Marini; Alessandro Capra; Alfio Castorina

doi:10.1117/1.3386681

1 April 2010 Contrast image correction method

Raimondo Schettini, Francesca Gasparini, Silvia Corchs, Fabrizio Marini, Alessandro Capra, Alfio Castorina

Author Affiliations +

Journal of Electronic Imaging, Vol. 19, Issue 2, 023005 (April 2010). https://doi.org/10.1117/1.3386681

Abstract

A method for contrast enhancement is proposed. The algorithm is based on a local and image-dependent exponential correction. The technique aims to correct images that simultaneously present overexposed and underexposed regions. To prevent halo artifacts, the bilateral filter is used as the mask of the exponential correction. Depending on the characteristics of the image (piloted by histogram analysis), an automated parameter-tuning step is introduced, followed by stretching, clipping, and saturation preserving treatments. Comparisons with other contrast enhancement techniques are presented. The Mean Opinion Score (MOS) experiment on grayscale images gives the greatest preference score for our algorithm.

©(2010) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Raimondo Schettini, Francesca Gasparini, Silvia Corchs, Fabrizio Marini, Alessandro Capra, and Alfio Castorina "Contrast image correction method," Journal of Electronic Imaging 19(2), 023005 (1 April 2010). https://doi.org/10.1117/1.3386681

Published: 1 April 2010

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