What Does Tristimulus Mean?

A Tristimulus colorimeter, colloquially shortened to colorimeter, is used in digital imaging, to profile and calibrate output devices. It takes a limited number of wideband spectral energy readings along the visible spectrum by using filtered photodetectors; e.g. silicon photodiodes.

What is the meaning of tristimulus?

: of or relating to values giving the amounts of the three colored lights red, green, and blue that when combined additively produce a match for the color being considered.

How do you calculate tristimulus value?

The CIE tristimulus values for a reflecting or transmitting sample are calculated by adding the product of the spectral power distribution of the illuminant, the reflectance or transmittance factor of the sample and the color matching functions of the observer at each wavelength of the visible spectrum.