A Retinex Inspired Bilateral Filter for Enhancing Images under Difficult Light Conditions

Michela Lecca

2021

Abstract

This paper presents SuPeR-B, a novel, Retinex inspired color spatial algorithm to enhance images acquired under difficult light conditions, such as pictures containing dark and bright regions caused by backlight and/or local, not diffused spotlight. SuPeR-B takes as input a color image and improves its readability by processing its color channels independently in accordance with some principles of the Retinex theory. Precisely, SuPeR-B re-works the channel intensity of each pixels accounting for differences computed both in the spatial and intensity domains. In this way, SuPeR-B acts as a bilater filter. The experiments, carried out on a real-world dataset, shows that SuPeR-B ensures good enhancement results, also in comparison with other state-of-the-art algorithms: SuPeR-B improves the overall content of the image, making the dark regions brighter and more contrasted, while lowering possible chromatic dominants of the light.

Paper Citation

in Harvard Style

Lecca M. (2021). A Retinex Inspired Bilateral Filter for Enhancing Images under Difficult Light Conditions. In Proceedings of the 16th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2021) - Volume 4: VISAPP; ISBN 978-989-758-488-6, SciTePress, pages 76-86. DOI: 10.5220/0010235900760086

in Bibtex Style

@conference{visapp21,
author={Michela Lecca},
title={A Retinex Inspired Bilateral Filter for Enhancing Images under Difficult Light Conditions},
booktitle={Proceedings of the 16th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2021) - Volume 4: VISAPP},
year={2021},
pages={76-86},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0010235900760086},
isbn={978-989-758-488-6},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 16th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2021) - Volume 4: VISAPP
TI - A Retinex Inspired Bilateral Filter for Enhancing Images under Difficult Light Conditions
SN - 978-989-758-488-6
AU - Lecca M.
PY - 2021
SP - 76
EP - 86
DO - 10.5220/0010235900760086
PB - SciTePress