Coupled Retinex

Javier Vazquez Corral; Graham D. Finlayson

doi:10.2352/issn.2169-2629.2019.27.3

Coupled Retinex

Javier Vazquez Corral, Graham D. Finlayson

Research output: Contribution to conference › Paper › peer-review

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Abstract

Retinex is a colour vision model introduced by Land more than 40 years ago. Since then, it has also been widely and successfully used for image enhancement. However, Retinex often introduces colour and halo artefacts. Artefacts are a necessary consequence of the per channel color processing and the lack of any strong control for controlling the locality of the processing (halos are very local errors). In this paper we relate an input to the corresponding output processed retinex image by using a single shading term which is both spatially varying and smooth and a global colour shift. This coupling dramatically reduces common Retinex artefacts. Coupled Retinex is strongly preferred in preference tests.

Original language	English
Pages	7-12
Number of pages	6
DOIs	https://doi.org/10.2352/issn.2169-2629.2019.27.3
Publication status	Published - 21 Oct 2019
Event	27th Color and Imaging Conference - Centre International de Conférences, Sorbonne Universités (CICSU), Paris, France Duration: 21 Oct 2019 → 25 Oct 2019

Conference

Conference	27th Color and Imaging Conference
Country/Territory	France
City	Paris
Period	21/10/19 → 25/10/19

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10.2352/issn.2169-2629.2019.27.3

Accepted_ManuscriptAccepted author manuscript, 2.77 MB

https://www.ingentaconnect.com/content/10.2352/issn.2169-2629.2019.27.3

Graham Finlayson
- G.Finlaysonuea.acuk
- School of Computing Sciences - Professor of Computing Science
- Colour and Imaging Lab - Member
Person: Research Group Member, Academic, Teaching & Research

Cite this

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abstract = "Retinex is a colour vision model introduced by Land more than 40 years ago. Since then, it has also been widely and successfully used for image enhancement. However, Retinex often introduces colour and halo artefacts. Artefacts are a necessary consequence of the per channel color processing and the lack of any strong control for controlling the locality of the processing (halos are very local errors). In this paper we relate an input to the corresponding output processed retinex image by using a single shading term which is both spatially varying and smooth and a global colour shift. This coupling dramatically reduces common Retinex artefacts. Coupled Retinex is strongly preferred in preference tests.",

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AU - Finlayson, Graham D.

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AB - Retinex is a colour vision model introduced by Land more than 40 years ago. Since then, it has also been widely and successfully used for image enhancement. However, Retinex often introduces colour and halo artefacts. Artefacts are a necessary consequence of the per channel color processing and the lack of any strong control for controlling the locality of the processing (halos are very local errors). In this paper we relate an input to the corresponding output processed retinex image by using a single shading term which is both spatially varying and smooth and a global colour shift. This coupling dramatically reduces common Retinex artefacts. Coupled Retinex is strongly preferred in preference tests.

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DO - 10.2352/issn.2169-2629.2019.27.3

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T2 - 27th Color and Imaging Conference

Y2 - 21 October 2019 through 25 October 2019

ER -

Coupled Retinex

Abstract

Conference

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Graham Finlayson

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