Chromaticity coordinates of frequency-limited functions.
We compute the gamut of coordinates in the Commission Internationale de l'Eclairage chromaticity diagram that correspond to positive frequency-limited functions having only three degrees of freedom (a trichromatic system). The results suggest that practical colors are either suitably frequency limited to be represented by three samples or have suitably frequency-limited metamers.
D003118:Color Perception; D003124:Colorimetry / Q000379:methods*; D005583:Fourier Analysis; D006801:Humans