| Titre : |
A general metric for the magnitude of observer metamerism |
| Type de document : |
texte imprimé |
| Auteurs : |
Boris Sluban, Auteur ; Peyvandi Shahram, Auteur ; Shirin Charmchi Avval, Auteur ; Seyed Hossein Amirshahi, Auteur |
| Année de publication : |
2014 |
| Article en page(s) : |
p. 368-375 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Analyse mathématique
Analyse numérique
Métamérisme
vision des couleurs
|
| Index. décimale : |
667.3 Teinture et impression des tissus |
| Résumé : |
Observer metamerism is defined as a property of a pair of spectrally different stimuli having the same colour sensation for an individual (reference) observer. Frequently, samples in this pair no longer match if the observer is changed. In this article, a linear approximation formula is developed that predicts a metameric effect caused by small changes in the observer's colour-matching functions. This approximation formula enables a general metric of observer metamerism, the observer metamerism potential, to be defined that is independent of any particular deviated observer but still provides a close link to ‘observer-metameric’ colour difference. Numerical experiments were conducted to investigate the correlation between the observer metamerism potential and the maximum of 53 metameric colour differences caused by the change from the colour-matching functions of CIE standard 10° observer to the colour-matching functions of 49 Stiles and Burch's real 10° test observers. The proposed general metric, together with a previous metric proposed by the present authors, the illuminant metamerism potential, could be taken as a quantitative measure of the performance of spectral approximation methods. |
| Note de contenu : |
- Approximation of the Colour change caused by change in the observer's CMFs
- Definition and calculation of the observer metamerism potential
- Numerical examples |
| DOI : |
10.1111/cote.12100 |
| En ligne : |
https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12100 |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22076 |
in COLORATION TECHNOLOGY > Vol. 130, N° 5 (10/2014) . - p. 368-375
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