RT Book, Section T1 Analysing observer metamerism in CIECAM02 using real observers A1 Ezquerro Rodríguez, José Miguel A1 Zoido Chamorro, Jesús Manuel A1 Perales, Esther A1 Martínez Verdú, Francisco M. A1 Melgosa Latorre, Manuel AB Given a fixed set of viewing conditions, a colour appearance model provides a method for transforming tristimulus values to perceptual attributes correlates, and vice versa. Current colour appearance models, like C1ECAM02 [1], have been developed assuming the C1E31 Standard Observer. However a general model must adequately describe the colorimetric behaviour of a large enough set of real observers. In this work we analyse the variability of the different parameters defined by C1ECAM02 when different sets of colour-matching functions associated with real observers are considered. All our sets of colour-matching functions are for small-size fields (smaller than 4°). Our main goal is to evaluate the observer metamerism provided in C1ECAM02 for a set of 13 real observers, when the reflectances of the 24 chips of the Gretag Macbetch ColorChecker are illuminated under D65 and A illuminants. PB Society for Imaging Science and Technology SN 978-0-89208-262-6 YR 2008 FD 2008-06 LK https://hdl.handle.net/20.500.14352/53583 UL https://hdl.handle.net/20.500.14352/53583 LA eng NO 4th European Conference on Colour in Graphics, Imaging, and Vision and 10th International Symposium on Multispectral Colour Science, CGIV 2008/MCS'08; Terrassa; Spain; 9 June 2008 through 13 June 2008 NO Ministerio de Educación y Ciencia de España NO FEDER DS Docta Complutense RD 17 dic 2025