- Author
-
Boynton, R. M.
|
Fargo, L.
|
Collins, B. L.
- Title
- Categorical Color Rendering of Four Common Light Sources.
- Coporate
- California Univ., San Diego, La Jolla
National Institute of Standards and Technology, Gaithersburg, MD
- Journal
-
Color Research and Application,
Vol. 15,
No. 4,
222-230,
August 1990
- Keywords
-
color
|
light sources
|
tungsten-incandescent
|
illuminants
|
metal halides
|
CIE color-rendering index
- Abstract
- Subjects were asked to sort samples from the Optical Society of America (OSA) Uniform Color Scales set into 33 color categories under four separate illuminates: tungsten-incandescent, metal halide, high-pressure sodium, and clear mercury. Sorting required that each color sample be designated as a "good," "acceptable," or "poor" example within one of the eleven basic color categories specified by Berlin and Kay. Three indices of the categorical color-rendering capacity of the sources were developed. Assuming tungsten-incandescent as the reference illuminant, all three measures rated the color-rendering quality of the tested illuminants from best to worst in the order listed above, in agreement with the CIE color-rendering index.