Abnormal Hue-Angle change of the gemstone tanzanite between CIE illuminants d65 and a in CIELAB color space

Autor:	Scott Hemphill, James E. Shigley, Yan Liu, Emmanuel Fritsch
Rok vydání:	1995
Předmět:	Physics Dominant wavelength Color difference business.industry General Chemical Engineering Human Factors and Ergonomics General Chemistry Color temperature Color space Tanzanite Spectral color Color rendering index Optics Primary color business
Zdroj:	Color Research & Application. 20:245-250
ISSN:	1520-6378 0361-2317
DOI:	10.1002/col.5080200407
Popis:	The blue-to-purple color appearance change observed in some rare specimens of the gemstone tanzanite between daylight and incandescent light is contrary to the hue-angle change calculated between CIE illuminants D65 and A in CIELAB color space. This abnormal calculated hue-angle change for tanzanite can be corrected by using the spectral sensitivity functions of the three kinds of cone photoreceptors to directly calculate color. This study suggests that the cone spectral sensitivity functions are more fundamental in color calculations than the CIE color-matching functions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::808e043192d6420ef4145f061d3de73f https://doi.org/10.1002/col.5080200407 Zobrazit plný text záznamu Plný text