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Description / Abstract:
This CIE Standard specifies methods of calculating the
tristimulus values of colour stimuli for which the spectral
distributions are provided. These colour stimuli may be produced by
self - luminous light sources or by reflecting or transmitting
objects.
The Standard requires that the colour stimulus function be
tabulated at measurement intervals of 5 nm or less in a wavelength
range of at least 380 nm to 780 nm. Extrapolation methods are
suggested for cases where the measured wavelength range is less
than 380 nm to 780 nm.
The standard method is defined as summation at 1 nm intervals
over the wavelength range from 360 nm to 830 nm. Alternative
abridged methods are defined for larger intervals (up to 5 nm) and
shorter ranges (down to 380 nm to 780 nm). The alternative methods
are to be used only when appropriate and when the user has reviewed
the impact on the final results.
The Standard may be used in conjunction with the CIE 1931
standard colorimetric observer or the CIE 1964 standard
colorimetric observer.