INTEROBSERVER VARIABILITY OF CHROMATICITY DISCRIMINATION AND COLOR REPRESENTATION SPACES

We have evaluated the interobserver variability of color discriminatio n data in three different color representation spaces: CIELUV, CIELAB and cone-excitation space. We determined differential color thresholds for an achromatic stimulus and eight observers and represent them in the three color spaces. The results show a very little variability in the cone-excitation space. based upon Boynton's color vision model. Th e differences are a little higher in CIELUV space, although can be con sidered as moderated, whereas these are quite higher in CIELAB.