xyz1931: CIE Color Matching Functions - 2-degree (1931)
Description
ll{
xyz1931.1nm the 1931 2° functions from 360 to 830 nm, at 1nm intervals
xyz1931.5nm the 1931 2° functions from 380 to 780 nm, at 5nm intervals
}
Arguments
encoding
UTF-8
format
Each is a colorSpec object organized as a matrix with 3 variables.
ll{
{x} the x-bar responsivity function}
y
tab
the y-bar responsivity function
the z-bar responsivity function
cr
z
source
http://www.cvrl.org
References
Günther Wyszecki and W.S. Stiles.
Color Science : Concepts and Methods, Quantitative Data and Formulae.
Second Edition.
Wiley-Interscience. 1982.
Table I(3.3.1).
pp. 723-735.
ASTM E 308 - 01.
Standard Practice for Computing the Colors of Objects by Using the CIE System.
Table 1