Automatic Color-to-Gray Conversion for Digital Images in Gradient Domain

Lu Hao, Jie Feng, Bingfeng Zhou

2015

Abstract

Color-to-grayscale conversion for digital color images is widely used in many applications. In this paper an automatic gradient domain color-to-gray conversion method is described. By enhancing the luminance gradient with a modulated chromatic difference enhancement in CIELAB space, a gradient field is created to construct the resulting grayscale image using a Poisson equation solver. A sign function for the gradient is defined for isoluminance color images to keep correct color ordering. By introducing a structural similarity index measurement (SSIM), the main parameters of the method are automatically optimized in the sense of human vision. Therefore, this method can automatically produce artifact-free and salience-preserving grayscale images that coincide with human perception for the color difference.

Paper Citation

in Harvard Style

Hao L., Feng J. and Zhou B. (2015). Automatic Color-to-Gray Conversion for Digital Images in Gradient Domain . In Proceedings of the 10th International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2015) ISBN 978-989-758-087-1, pages 231-238. DOI: 10.5220/0005262102310238

in Bibtex Style

@conference{grapp15,
author={Lu Hao and Jie Feng and Bingfeng Zhou},
title={Automatic Color-to-Gray Conversion for Digital Images in Gradient Domain},
booktitle={Proceedings of the 10th International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2015)},
year={2015},
pages={231-238},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0005262102310238},
isbn={978-989-758-087-1},
}

in EndNote Style

TY - CONF
JO - Proceedings of the 10th International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2015)
TI - Automatic Color-to-Gray Conversion for Digital Images in Gradient Domain
SN - 978-989-758-087-1
AU - Hao L.
AU - Feng J.
AU - Zhou B.
PY - 2015
SP - 231
EP - 238
DO - 10.5220/0005262102310238