tristimulus


Also found in: Wikipedia.

tristimulus

Systems that generate color with three color components. See trichromaticity.
References in periodicals archive ?
The tristimulus point coordinates, ([x.sub.0]; [Y.sub.0]; [Z.sub.0]), depend on the illuminating source used to capture the image.
A analise de cor dos frutos foi determinada em colorimetro tristimulus CR-310 MINOLTA (KONICA MINOLTA) pelo sistema CIELAB (Commision Internationale L'Eclarirage, 1986).
CIELAB color space used a non-linear transformation of the tristimulus space to simplify the original ANLAB formula developed by Adams in 1942, which was widely used in the colorant industry.
where [R.sub.b] and [R.sub.w] are the reflection coefficients of the paint film measured on, respectively, black and white substrates, [y.sub.10] is the tristimulus function and [D.sub.65] is the illuminant.
The [L.sup.*], [a.sup.*] and [b.sup.*] coordinates can be calculated from the tristimulus values X, Yand Z normalized to the white by equations (1)-(3):
Spectral data is reported every 10 nm, and tristimulus color calculations are performed from 360 to 780 nm as recommended by the CIE.
Spectral data is reported every 10nm and tristimulus color calculations are performed from 360 to 780nm as recommended by the CIE.
Suitable for classroom use, this technical text defines the tristimulus specification, presents the principles of color matching and metamerism in vector-matrix form, and explains the least-square minimization technique for color transformation and several sophisticated methods for spectrum reconstruction.
Noodle sheet color was measured in Commission Internationale de l'Eclairage (CIE) tristimulus color space ([L.sup.*], [a.sup.*], [b.sup.*]) with a Minolta CM-2002 spectrophotometer (Minolta Camera, Chuo-Ku, Osaka, Japan) with a 50-mm measurement aperture.
The color of material is generally defined by the tristimulus value in the range of human vision (i.e.; 400 to 800 nm or 25,000 to 12,500 [cm.sup.-1]).
Current innovativa products include a complete line of spectrophotometers, tristimulus colorimeters, quality control and color formulation software.
The method proposed for standardization specifies measurement of the tristimulus values at three angles: near specular, far from specular and one more angle in between.