| Titre : |
Methods for designing characterisation targets for digital cameras |
| Type de document : |
texte imprimé |
| Auteurs : |
Yi-Fan Chou, Auteur ; Ming Ronnier Luo, Auteur ; Changjun Li, Auteur ; Vien Cheung, Auteur ; San-Liang Lee, Auteur |
| Année de publication : |
2013 |
| Article en page(s) : |
p. 203-213 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Appareils photographiques numériques
Calcul
Caractérisation
vision des couleurs
|
| Index. décimale : |
778.6 Photographie en couleur |
| Résumé : |
Characterisation targets usually include a set of physical coloured samples. A characterisation model can be derived between the colorimetric values (tristimulus values) and camera responses (RGB values) taken from an imaging device such as a digital camera capturing the colours in the target. The performance of such a model is highly dependent upon the number of colours and the colour region in the characterisation target. An ideal characterisation target should provide accurate model prediction without requiring too many samples. In this paper, a computational method is presented for colour selections to train a camera characterisation model based on a fourth-order polynomial model including 35 terms. Compared with other available methods, the newly developed method performed better. It is proposed that this method be applied to generate generic targets in terms of colorimetric values. These targets should work reasonably well for a wide range of materials. |
| Note de contenu : |
- CAMERA CHARACTERISATION MODEL
- COLOUR SELECTIONS FOR THE TRAINING TARGET : Hardeberg method - MAXMINC method - The colour difference iteration (CDI) method
- DATA COLLECTION : Munsell book of color - Professional colour communicator - GretagMacbeth ColorChecker DC - Nikon D80 digital camera - GretagMacbeth COLOR-EYE 7000A spectrophotometer
- COMPARISON OF COLOUR SELECTION METHODS
- COLOUR SELECTION GUIDELINE FOR CHARACTERISING DIGITAL CAMERAS
- DEVELOPMENT OF GENERIC CHARACTERISATION TARGETS BASED ON COLORIMETRIC VALUES : Approach 1 : averaged CDI - Approach 2 : grid CDI |
| DOI : |
10.1111/cote.12022 |
| En ligne : |
http://onlinelibrary.wiley.com/doi/10.1111/cote.12022/pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18494 |
in COLORATION TECHNOLOGY > Vol. 129, N° 3 (06/2013) . - p. 203-213
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