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Article

Three-Color Balancing for Color Constancy Correction

Department of Computer Science, Tokyo Metropolitan University, 6-6 Asahigaoka, Tokyo 191-0065, Japan
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Author to whom correspondence should be addressed.
Academic Editors: Raimondo Schettini and Edoardo Provenzi
J. Imaging 2021, 7(10), 207; https://doi.org/10.3390/jimaging7100207
Received: 17 August 2021 / Revised: 22 September 2021 / Accepted: 2 October 2021 / Published: 6 October 2021
(This article belongs to the Special Issue Intelligent Media Processing)
This paper presents a three-color balance adjustment for color constancy correction. White balancing is a typical adjustment for color constancy in an image, but there are still lighting effects on colors other than white. Cheng et al. proposed multi-color balancing to improve the performance of white balancing by mapping multiple target colors into corresponding ground truth colors. However, there are still three problems that have not been discussed: choosing the number of target colors, selecting target colors, and minimizing error which causes computational complexity to increase. In this paper, we first discuss the number of target colors for multi-color balancing. From our observation, when the number of target colors is greater than or equal to three, the best performance of multi-color balancing in each number of target colors is almost the same regardless of the number of target colors, and it is superior to that of white balancing. Moreover, if the number of target colors is three, multi-color balancing can be performed without any error minimization. Accordingly, we propose three-color balancing. In addition, the combination of three target colors is discussed to achieve color constancy correction. In an experiment, the proposed method not only outperforms white balancing but also has almost the same performance as Cheng’s method with 24 target colors. View Full-Text
Keywords: color image processing; color constancy; white balance adjustment; color correction; color distortion color image processing; color constancy; white balance adjustment; color correction; color distortion
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MDPI and ACS Style

Akazawa, T.; Kinoshita, Y.; Shiota, S.; Kiya, H. Three-Color Balancing for Color Constancy Correction. J. Imaging 2021, 7, 207. https://doi.org/10.3390/jimaging7100207

AMA Style

Akazawa T, Kinoshita Y, Shiota S, Kiya H. Three-Color Balancing for Color Constancy Correction. Journal of Imaging. 2021; 7(10):207. https://doi.org/10.3390/jimaging7100207

Chicago/Turabian Style

Akazawa, Teruaki, Yuma Kinoshita, Sayaka Shiota, and Hitoshi Kiya. 2021. "Three-Color Balancing for Color Constancy Correction" Journal of Imaging 7, no. 10: 207. https://doi.org/10.3390/jimaging7100207

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