Image Decolorization by Maximally Preserving Color Contrast

Alex Yong-Sang Chia, Keita Yaegashi, Soh Masuko

2014

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.

Paper Citation

in Harvard Style

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 - Volume 1: ICPRAM, ISBN 978-989-758-018-5, pages 453-459. DOI: 10.5220/0004862104530459

in Bibtex Style

@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 - Volume 1: ICPRAM,},
year={2014},
pages={453-459},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004862104530459},
isbn={978-989-758-018-5},
}

in EndNote Style

TY - CONF
JO - Proceedings of the 3rd International Conference on Pattern Recognition Applications and Methods - Volume 1: ICPRAM,
TI - Image Decolorization by Maximally Preserving Color Contrast
SN - 978-989-758-018-5
AU - Yong-Sang Chia A.
AU - Yaegashi K.
AU - Masuko S.
PY - 2014
SP - 453
EP - 459
DO - 10.5220/0004862104530459