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Article Details

Copyright Statement: This is an open access article licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, even commercially as long as the original work is properly cited.

Adaptive Logarithmic-Power Algorithm for Preserving the Brightness in Contrast Distorted Images

Author 1: Navleen S Rekhi
Author 2: Jagroop S Sidhu

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Digital Object Identifier (DOI) : 10.14569/IJACSA.2021.0121022

Article Published in International Journal of Advanced Computer Science and Applications(IJACSA), Volume 12 Issue 10, 2021.

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Abstract: The digital images get distorted due to non-uniform light conditions or improper acquisition settings of the digital camera. Such factors lead to distorted contrast objects. In this work, we proposed adaptive enhancement algorithm to improve the contrast while preserving the mean brightness in the image. The method developed is a combination of discrete wavelet transform and gamma correction. Firstly, the gamma scale is computed from multi-scale decomposition using 2D-discrete wavelet transform. The value of scale parameter in gamma was computed from combination of logarithmic and power function. Secondly, the gamma correction is implemented to improve the contrast in the image. Lastly, bilateral filtering is utilized for smoothness of edges in the image. The approach effectively preserved the brightness and optimized the contrast in the image. The objective quality measures used as Peak SNR, AMBE, entropy, entropy based contrast measure and median absolute deviation is computed and compared with other state-of-the-art techniques.

Keywords: Non-uniform images; gamma correction; multi-scale 2D- discrete wavelet transform; logarithmic-power; quality metrics

Navleen S Rekhi and Jagroop S Sidhu, “Adaptive Logarithmic-Power Algorithm for Preserving the Brightness in Contrast Distorted Images” International Journal of Advanced Computer Science and Applications(IJACSA), 12(10), 2021. http://dx.doi.org/10.14569/IJACSA.2021.0121022

@article{Rekhi2021,
title = {Adaptive Logarithmic-Power Algorithm for Preserving the Brightness in Contrast Distorted Images},
journal = {International Journal of Advanced Computer Science and Applications},
doi = {10.14569/IJACSA.2021.0121022},
url = {http://dx.doi.org/10.14569/IJACSA.2021.0121022},
year = {2021},
publisher = {The Science and Information Organization},
volume = {12},
number = {10},
author = {Navleen S Rekhi and Jagroop S Sidhu}
}


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