Standard Illuminant

A standard illuminant is a theoretical source of visible light with a profile (its spectral power distribution) which is published. Standard illuminants provide a basis for comparing images or colors recorded under different lighting.

Read more about Standard Illuminant:  CIE Illuminants, White Point

Famous quotes containing the word standard:

    “We don’t want bores in the theatre. We don’t want standardised acting, standard actors with standard-shaped legs. Acting needs everybody, cripples, dwarfs and people with noses so long. Give us something that is different.”
    —Dame Sybil Thorndike (1882–1976)