Multi-primary design of spectrally accurate displays

Abstract — Spectral color reproduction overcomes some inherent problems of colorimetric reproduc-tion. An implementation of a spectral display for surface color reproduction, capable of reproducing a desired spectrum for each pixel, based on multi-primary projection technology, is presented. A light source with a spectrum identical to that of the illumination is filtered by a positive linear combination of several color filters, which reproduces the reflectance spectra. The spectra of the color filters are tailored to span the space of possible surface spectra. Various methods for choosing the color filters vis-à-vis the required performance is discussed in detail. Soft-proofing application is examined as a test case for the concept