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The use of metamers to compare the color vision of observers Ezquerro Rodríguez, José Miguel Carreño Sánchez, Fernando Zoido Chamorro, Jesús Manuel Bernabeu Martínez, Eusebio 535 Matching Functions Thresholds Failures Óptica (Física) 2209.19 Óptica Física © John Wiley & Sons, Inc. The authors are especially endebted to Dr. J. A. Martínez, Dr. E. Hita, and Dr. M. Melgosa at Departamento de Óptica of Granada University for their continual advice and help. They also want to express their gratitude to the anonymous referees who comments helped us to improve the article. In this research we compare the colorimetric behavior of several observers. For color centers recommended by CIE we have produced large sets of spectral distributions, which are metameric for the CIE 1931 standard observer. For each one of the color centers, we compare the clouds of chromaticity coordinates with the chromaticity thresholds. We define a parameter that provides a quantitative measure of the interobserver variability. This parameter is used to arrange the observers by their degree of likeness. A similar procedure has been used to compare two real observers. It is shown how there is no reciprocity between the colorimetric behavior of two real observers Depto. de Óptica Fac. de Ciencias Físicas TRUE pub 2023-06-20T19:05:06Z 2023-06-20T19:05:06Z 2001-08 journal article https://hdl.handle.net/20.500.14352/59225 0361-2317 10.1002/col.1032 eng open access application/pdf John Wiley & Sons, Inc.