Leonardo 2000: the softcopy screen book

Michael H. Brill; Hugh S. Fairman; Henry Hemmendinger; Jack Ladson

doi:10.1117/12.464686

6 June 2002 Leonardo 2000: the softcopy screen book

Michael H. Brill, Hugh S. Fairman, Henry Hemmendinger, Jack Ladson

Proceedings Volume 4421, 9th Congress of the International Colour Association; (2002) https://doi.org/10.1117/12.464686
Event: 9th Congress of the International Color Association, 2001, Rochester, NY, United States

Abstract

As part of a larger project that is intended for self-taught color science, we developed a software tool to provide a softcopy simulation of the Munsell Book of Color under varied illuminants and for various observers. This simulation avoids setting up as ideal a particular set of pigments from which to derive spectral reflectances. The color-order database contains a reflectance function for each Munsell aim point. The aim points are the usual ones for Illuminant C and 2° Observer function. For a new illuminant and observer, each reflectance funtion is weighted by appropriate color-matching function and illuminant spectral power distribution, and integrated to produced new X, Y, and Z values. From these values, CIELAB and chromaticity coordinates are computed. Having specified atlast colors in a variety of coordinates, the program next renders them on screen as a color-navigation tool. To illustrate good practice in constructing an atlas of reflectances, the reflectance spectra from a linear series of aim points in Munsell space can be co-plotted to show the requirements for consistency of the series under illuminant and observer change.

Citation Download Citation

Michael H. Brill, Hugh S. Fairman, Henry Hemmendinger, and Jack Ladson "Leonardo 2000: the softcopy screen book", Proc. SPIE 4421, 9th Congress of the International Colour Association, (6 June 2002); https://doi.org/10.1117/12.464686

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