Underwater Image Restoration and Enhancement Based on a Fusion Algorithm With Color Balance, Contrast Optimization, and Histogram Stretching

A fusion algorithm is proposed for the restoration and enhancement of underwater images. Color balance, contrast optimization and histogram stretching are carried out. To alleviate the effect of color shift in an underwater image, the scalar values of R, G, B channels are renewed so that the distrib...

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Main Authors: Weilin Luo, Shunqiang Duan, Jiwen Zheng
Format: Article
Language:English
Published: IEEE 2021-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/9359796/
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author Weilin Luo
Shunqiang Duan
Jiwen Zheng
author_facet Weilin Luo
Shunqiang Duan
Jiwen Zheng
author_sort Weilin Luo
collection DOAJ
description A fusion algorithm is proposed for the restoration and enhancement of underwater images. Color balance, contrast optimization and histogram stretching are carried out. To alleviate the effect of color shift in an underwater image, the scalar values of R, G, B channels are renewed so that the distributions of the three channels in histogram are similar. Instead of refining the transmittance in dark channel prior based restoration, an optimized contrast algorithm is employed by which the optimal transmittance is determined. To further improve the brightness and contrast of underwater images, a histogram stretching algorithm based on the red channel is given. To verify the effectiveness of the proposed fusion algorithm, experimental underwater images are treated. Results show that the quality of underwater images is improved significantly, both in term of subjective visual effect and objective evaluation. The proposed underwater image processing strategy is also compared with some popular techniques. Comparison results indicate the advantage of the proposed strategy over others.
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spelling doaj.art-1d7294cd906f4cfc8a592f18b277558d2022-12-21T21:27:04ZengIEEEIEEE Access2169-35362021-01-019317923180410.1109/ACCESS.2021.30609479359796Underwater Image Restoration and Enhancement Based on a Fusion Algorithm With Color Balance, Contrast Optimization, and Histogram StretchingWeilin Luo0https://orcid.org/0000-0003-2384-2553Shunqiang Duan1Jiwen Zheng2College of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, ChinaCollege of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, ChinaCollege of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, ChinaA fusion algorithm is proposed for the restoration and enhancement of underwater images. Color balance, contrast optimization and histogram stretching are carried out. To alleviate the effect of color shift in an underwater image, the scalar values of R, G, B channels are renewed so that the distributions of the three channels in histogram are similar. Instead of refining the transmittance in dark channel prior based restoration, an optimized contrast algorithm is employed by which the optimal transmittance is determined. To further improve the brightness and contrast of underwater images, a histogram stretching algorithm based on the red channel is given. To verify the effectiveness of the proposed fusion algorithm, experimental underwater images are treated. Results show that the quality of underwater images is improved significantly, both in term of subjective visual effect and objective evaluation. The proposed underwater image processing strategy is also compared with some popular techniques. Comparison results indicate the advantage of the proposed strategy over others.https://ieeexplore.ieee.org/document/9359796/Underwater imagerestorationenhancementcolor balancecontrasthistogram
spellingShingle Weilin Luo
Shunqiang Duan
Jiwen Zheng
Underwater Image Restoration and Enhancement Based on a Fusion Algorithm With Color Balance, Contrast Optimization, and Histogram Stretching
IEEE Access
Underwater image
restoration
enhancement
color balance
contrast
histogram
title Underwater Image Restoration and Enhancement Based on a Fusion Algorithm With Color Balance, Contrast Optimization, and Histogram Stretching
title_full Underwater Image Restoration and Enhancement Based on a Fusion Algorithm With Color Balance, Contrast Optimization, and Histogram Stretching
title_fullStr Underwater Image Restoration and Enhancement Based on a Fusion Algorithm With Color Balance, Contrast Optimization, and Histogram Stretching
title_full_unstemmed Underwater Image Restoration and Enhancement Based on a Fusion Algorithm With Color Balance, Contrast Optimization, and Histogram Stretching
title_short Underwater Image Restoration and Enhancement Based on a Fusion Algorithm With Color Balance, Contrast Optimization, and Histogram Stretching
title_sort underwater image restoration and enhancement based on a fusion algorithm with color balance contrast optimization and histogram stretching
topic Underwater image
restoration
enhancement
color balance
contrast
histogram
url https://ieeexplore.ieee.org/document/9359796/
work_keys_str_mv AT weilinluo underwaterimagerestorationandenhancementbasedonafusionalgorithmwithcolorbalancecontrastoptimizationandhistogramstretching
AT shunqiangduan underwaterimagerestorationandenhancementbasedonafusionalgorithmwithcolorbalancecontrastoptimizationandhistogramstretching
AT jiwenzheng underwaterimagerestorationandenhancementbasedonafusionalgorithmwithcolorbalancecontrastoptimizationandhistogramstretching