| Titre : |
Quantification and prediction of visually perceived specular gloss at three illumination/viewing geometries |
| Type de document : |
texte imprimé |
| Auteurs : |
Fereshteh Mirjalili, Auteur ; Siamak Moradian, Auteur ; Farhad Ameri, Auteur ; Mohammad Amani Tehran, Auteur |
| Année de publication : |
2016 |
| Article en page(s) : |
p. 239-256 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Brillance (optique)
Eclairage
Evaluation visuelle
Mesure
vision des couleurs
|
| Tags : |
'Brillant spéculaire' 'Evaluation visuelle' 'Niveau de brillance achromatique' 'Eclairage unidirectionnel' 'Brillance mètre trois angles' |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
In the present study, attempts were made to clarify the existence of a correlation between visually perceived and instrumentally measured specular gloss of a series of achromatic samples. To this end, seven achromatic physical scales of specular gloss each consisting of 10 or 11 samples were prepared using lithographically printed black, white, and five in between gray papers. The samples were visually assessed and subsequently quantified in terms of a visually uniform color constant lightness scale, by a panel of 14 observers in an especially designed unidirectional light compartment at three illumination/observation geometries, namely 20°/20°, 60°/60°, and 85°/85°. Four statistical parameters were utilized to determine the correlation between visually perceived and instrumentally measured specular gloss. The results show that the instrumental 60°/60° geometry is capable of efficiently quantifying the equivalent specular gloss as perceived by a human observer. Surprisingly, it was also possible to accurately predict the visually quantified specular gloss both at the 20° and the 85° geometries by the aid of applying special linear relationships derived from the instrumentally measured specular gloss of the 60° geometry. |
| Note de contenu : |
- EXPERIMENTAL : Preparation of specular gloss scales - Instrumental characterization - Visual assessments
- RESULTS AND DISCUSSION : Correlation between visual results and instrumental measurements |
| DOI : |
10.1007/s11998-015-9756-2 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-015-9756-2.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26109 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 13, N° 2 (03/2016) . - p. 239-256
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Quantification and prediction of visually perceived specular gloss at three illumination/viewing geometries in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 2 (03/2016)
