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| HAL : hal-00719790, version 1 |
| DOI : 10.1117/1.JEI.21.2.023015 |
| Fiche détaillée |  Récupérer au format |
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| Journal of Electronic Imaging 21, 2 (2012) 023015-1--023015-14 |
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| Improving color correction across camera and illumination changes by contextual sample selection |
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| Hazem Wannous 1Yves Lucas 2 |
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| (25/06/2012) |
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| In many tasks of machine vision applications, it is important that recorded colors remain constant, in the real world scene, even under changes of the illuminants and the cameras. Contrary to the human vision system, a machine vision system exhibits inadequate adaptability to the variation of lighting conditions. Automatic white bal- ance control available in commercial cameras is not sufficient to pro- vide reproducible color classification. We address this problem of color constancy on a large image database acquired with varying digi- tal cameras and lighting conditions. A device-independent color repre- sentation may be obtained by applying a chromatic adaptation transform, from a calibrated color checker pattern included in the field of view. Instead of using the standard Macbeth color checker, we suggest selecting judicious colors to design a customized pattern from contextual information. A comparative study demonstrates that this approach ensures a stronger constancy of the colors-of- interest before vision control thus enabling a wide variety of applica- tions. |
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| 1 : | FOX MIIRE (LIFL) |
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Université Lille I - Sciences et technologies – CNRS : UMR8022 |
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| 2 : | Laboratoire PRISME (PRISME) |
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Université d'Orléans : EA4229 – ENSI Bourges |
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| 3 : | Laboratoire Electronique, Informatique et Image (Le2i) |
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Université de Bourgogne – Arts et Métiers ParisTech – CNRS : UMR6306 |
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| Domaine | : | Informatique/Traitement du signal et de l'image Sciences de l'ingénieur/Traitement du signal et de l'image |
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| Color Constancy – Contextual improvement. Medical applications |
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| Liste des fichiers attachés à ce document : | |||||
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| hal-00719790, version 1 | |
| http://hal-univ-bourgogne.archives-ouvertes.fr/hal-00719790 | |
| oai:hal-univ-bourgogne.archives-ouvertes.fr:hal-00719790 | |
| Contributeur : Alamin Mansouri | |
| Soumis le : Vendredi 20 Juillet 2012, 20:49:43 | |
| Dernière modification le : Vendredi 20 Juillet 2012, 20:58:55 | |
