Analysis of Physiological Colorimetric Systems of Trichromats

Abstract

Criteria for determining whether a physiological colorimetric system belongs to the colour space of basic colorimetry have been formulated. A method for assessing the correspondence of an arbitrary colour space to the physiological space of the CIE 1931 standard colorimetric observer is presented. Studies of CIE-recommended colorimetric spaces – CIEPO06, Judd, Mac-Adam, and several other wellknown systems – revealed that they are non-physiological for the CIE standard observer. The error in the colour-matching functions of the physiological LMSphys system, caused by the uncertainty in the position of the reference colour stimulus S within the Nyberg triangle, has been quantified.