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Colorizing Color Images

Resource type
Date created
2018-02
Authors/Contributors
Author: Zhu, L.
Author: Funt, B.
Abstract
This paper describes a method of improving the quality of the color in color images by colorizing them. In particular, color quality may suffer from improper white balance and other factors such as inadequate camera characterization. Colorization generally refers to the problem of turning a luminance image into a realistic looking color image and impressive results have been reported in the computer vision literature. Based on the assumption that if colorization can successfully predict colors from luminance data alone then it should certainly be able to predict colors from color data, the proposed method employs colorization to ‘color’ color images. Tests show that the proposed method quite effectively removes color casts—including spatially varying color casts—created by changes in the illumination. The colorization method itself is based on training a deep neural network to learn the connection between the colors in an improperly balanced image and those in a properly balanced one. Unlike many traditional white-balance methods, the proposed method is image-inimage- out and does not explicitly estimate the chromaticity of the illumination nor apply a von-Kries-type adaptation step. The colorization method is also spatially varying and so handles spatially varying illumination conditions without further modification.
Document
Description
Presented at the IS&T International Symposium on Electronic Imaging 2018, Human Vision and Electronic Imaging 2018 Conference.
Published as
Zhu, L. and Funt, B., "Colorizing Color Images," Proc. Human Vision and Electronic Imaging XXIII, IS&T/SPIE Electronic Imaging, Feb. 2018. https://doi.org/10.2352/ISSN.2470-1173.2018.14.HVEI-541
Publication title
SPIE Electronic Imaging
Document title
Colorizing Color Images
Date
2018
Publisher DOI
10.2352/ISSN.2470-1173.2018.14.HVEI-541
Copyright statement
Copyright is held by the author(s).
Scholarly level
Peer reviewed?
Yes
Language
English
Member of collection

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