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Journal of Electronic Imaging

Power constrained contrast enhancement based on brightness compensated contrast-tone mapping operation
Author(s): Cheolkon Jung; Haonan Su; Lu Wang; Peng Ke
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Paper Abstract

We propose power constrained contrast enhancement based on brightness compensated contrast-tone mapping operation (BCCTMO). We adopt brightness compensation to restore the original perceptual luminance and combine tone mapping with contrast enhancement to improve image quality. First, we increase pixel values to compensate for the reduced brightness caused by backlight dimming while maintaining the perceived luminance. Then we perform a contrast-tone mapping operation to reduce the information loss caused by the brightness compensation and enhance contrast in images. Finally, we conduct color scaling to reproduce natural colors. We implement BCCTMO on an Android tablet with an LCD display using mathematical approximation. Experimental results demonstrate that BCCTMO produces high-quality images while minimizing distortions and saving power compared with state-of-the-art methods.

Paper Details

Date Published: 12 October 2016
PDF: 12 pages
J. Electron. Imaging. 25(5) 053027 doi: 10.1117/1.JEI.25.5.053027
Published in: Journal of Electronic Imaging Volume 25, Issue 5
Show Author Affiliations
Cheolkon Jung, Xidian Univ. (China)
Haonan Su, Xidian Univ. (China)
Lu Wang, Xidian Univ. (China)
Peng Ke, Xidian Univ. (China)


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