Document Detail

Unique and binary hues as functions of luminance and illuminant color temperature, and relations with invariant hues.
MedLine Citation:
PMID:  10748923     Owner:  NLM     Status:  MEDLINE    
For aperture color 3 s stimuli, the four unique hues, and at times the four (equally-balanced) binary hues, were measured for: (1) adapting white color temperatures 2850, 3400, 5500, 6500 K; and (2) luminance (L) for 5 and 6 log L ranges (about 0.01-3200 cd/m2) in 3.2:1 L steps (viewed singly) for 1 subject per white, 3 log L in 10:1 steps for 6 subjects for white 6500 K, and 1 log L for 2-11 subjects per white. The full hue cycle is graphed to the extended wavelength scale. With higher L, unique hues *b and *y shift longer, *g and *r shorter, and spectral binaries and 460 nm are invariant wavelengths, for Ls viewed singly. But for Ls viewed in successive contrast (Bezold-Brucke effect), unique hues are practically invariants. As interstimuli interval increases from 0-40 s (from successive L contrast to no-contrast), invariants shift away from uniques (which become hue-shift maxima) and coincide with spectral binaries (but not r/b, 565 c) at 495, 546, 600 nm. Successive L contrast switches spectral uniques' hue-shift off (as invariants), and spectral binaries on (as hue-shift maxima); and no-contrast switches the reverse. With higher illuminant color temperature 2850-6500 K, wavelength of 10 constant hues shortens 5-10 nm for *b, *y, g/y, y/r, but others are constant +/- 2 nm.
R W Pridmore
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Vision research     Volume:  39     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  1999 Nov 
Date Detail:
Created Date:  2000-04-12     Completed Date:  2000-04-12     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  3892-908     Citation Subset:  IM    
Central Houses Proprietary Limited, Turramurra, NSW, Australia.
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MeSH Terms
Adaptation, Ocular / physiology*
Color Perception / physiology*
Contrast Sensitivity / physiology
Photic Stimulation
Sensory Thresholds

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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