Re-locating colors in the OSA space

A monolexemic color-naming experiment in the Italian language was performed on a sample of 1,014 colors obtained extending the OSA-UCS color system (E-OSA). Colors were rendered on a Mitsubishi Diamond pro 2070 monitor as patches subtending 10° of visual angle in a completely dark room. The 11 universal categories proposed by Berlin and Kay (Basic color terms: Their universality and evolution, 1969) were considered. Consensus, consistency and focal colors were determined for each category. Comparisons were performed among the results obtained using Boynton & Olson (B&O), the extended OSA (E-OSA), a subset of it covering almost all the B&O sample (R-OSA) and the Sturges & Whitfield (S&W) sample sets. A good overlap could be observed among the locations of the consensus colors in the {L, j, g} color model between B&O and R-OSA, as well as a close proximity among the centroids of homologue regions for the majority of the classes. The analysis of the location of focal colors versus the centroids suggests that an additional basic term could be missing for the Italian language in the blue category.

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