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Concept of correlated color temperature
Author(s) -
Grum F.,
Saunders S. B.,
Macadam D. L.
Publication year - 1978
Publication title -
color research and application
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.393
H-Index - 62
eISSN - 1520-6378
pISSN - 0361-2317
DOI - 10.1002/col.5080030107
Subject(s) - chromaticity , black body radiation , spectral power distribution , color temperature , diagram , optics , spectral energy distribution , line (geometry) , computer science , spectral color , matching (statistics) , physics , color model , artificial intelligence , color space , mathematics , spectral line , statistics , geometry , image (mathematics) , astronomy , radiation
Abstract The concept of color temperature has been used for many years to characterize the relative spectral distribution of energy from light sources. Since not all sources of light are blackbody radiators, the term “correlated color temperature” was devised to indicate the temperature of the blackbody with chromaticity nearest that of the source. Since the CIE has recently recommended two additional color spaces superseding the existing universally agreed system, it is important to know what effect the new recommendation will have on the correlated color temperature determination. In view of this, it has seemed appropriate to design and carry out some fundamental studies in acceptable color matching among color‐normal observers. The isotemperature lines derived from the experimental data described here are within one standard deviation of the isotemperature lines derived from the 1960 UCS diagram. Hence, there is no need to revise the isotemperature lines derived formerly.