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Authors: Alex Yong-Sang Chia 1 ; Keita Yaegashi 2 and Soh Masuko 2

Affiliations: 1 Institute for Infocomm Research, Singapore ; 2 Rakuten Inc., Japan

Keyword(s): Image Decolorization, Feature Representation.

Related Ontology Subjects/Areas/Topics: Applications ; Computer Vision, Visualization and Computer Graphics ; Document Analysis and Understanding ; Image Understanding ; Pattern Recognition ; Perception ; Software Engineering

Abstract: We propose a method to convert a color image to its gray representation with the objective that color contrast in the color image is maximally preserved as gray contrast in the gray image. Given a color image, we first extract unique colors of the image through robust clustering for its color values. Based on the color contrast between these unique colors, we tailor a non-linear decolorization function that maximally preserves contrast in the gray image. A novelty here is the proposal of a color-gray feature that tightly couple color contrast with gray contrast information. We compute the optimal color-gray feature, and drive the search for a decolorization function that generates a color-gray feature that is most similar to the optimal one. This function is then used to convert a color image to its gray representation. Our experiments and user study demonstrate the greater effectiveness of this method in comparison to previous techniques.

CC BY-NC-ND 4.0

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Paper citation in several formats:
Yong-Sang Chia, A.; Yaegashi, K. and Masuko, S. (2014). Image Decolorization by Maximally Preserving Color Contrast. In Proceedings of the 3rd International Conference on Pattern Recognition Applications and Methods - ICPRAM; ISBN 978-989-758-018-5; ISSN 2184-4313, SciTePress, pages 453-459. DOI: 10.5220/0004862104530459

@conference{icpram14,
author={Alex {Yong{-}Sang Chia}. and Keita Yaegashi. and Soh Masuko.},
title={Image Decolorization by Maximally Preserving Color Contrast},
booktitle={Proceedings of the 3rd International Conference on Pattern Recognition Applications and Methods - ICPRAM},
year={2014},
pages={453-459},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004862104530459},
isbn={978-989-758-018-5},
issn={2184-4313},
}

TY - CONF

JO - Proceedings of the 3rd International Conference on Pattern Recognition Applications and Methods - ICPRAM
TI - Image Decolorization by Maximally Preserving Color Contrast
SN - 978-989-758-018-5
IS - 2184-4313
AU - Yong-Sang Chia, A.
AU - Yaegashi, K.
AU - Masuko, S.
PY - 2014
SP - 453
EP - 459
DO - 10.5220/0004862104530459
PB - SciTePress