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

Image enhancement

Image quality

Image filtering

Gaussian filters

Linear filtering

Image processing

Filtering (signal processing)

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