PHYSIOLOGICALLY-BASED COLOUR MATCHING FUNCTIONS

摘要

A goal of colour science since the establishment of the trichromatic theory of colourrnperception (e.g., Maxwell, 1855; von Helmholtz, 1852; Young, 1802) has been the accuraterndetermination of the mean (or standard) spectral sensitivities of the long-, middle- and shortwavelength-rnsensitive (L, M and S) cones-also known as the fundamental colour matchingrnfunctions (or CMFs): (l)(λ),(m)(λ) and (s)(λ). These CMFs are the physiological bases of allrnother CMFs. The cone fundamentals of Stockman and Sharpe (2000a), which are the new CIErninternational standard for colorimetry (CIE, 2007), rely on measurements made in both normalrntrichromats and colour deficient observers. The measurements were used to guide the linearrncombinations of the Stiles & Burch (1959) CMFs that define the cone fundamentals. Thesernfundamental CMFs can be linearly transformed to the more familiar colorimetric variants:rn(x)(λ),(y)(λ) and (z)(λ)by making a few simple assumptions.