More than RGB: Spectral Trends in Color Reproduction

Abstract

Early rendering algorithms relied exclusively on three-dimensional spaces for color computation, such as RGB and CIE XYZ. Recent rendering advances use full spectral information for illuminants and surfaces, resulting in much greater accuracy and realism. These expensive computations can be wasted, however, if ad hoc methods are used to adjust the final image on the monitor, in film, or in print. Ineficiency and inaccuracy can be avoided with some knowledge of device gamuts and color reproduction algorithms. This course follows spectral data through the graphics pipeline, examining issues of rendering, color science, perception, gamut mapping, and color management. We conclude with a discussion of trends and open problems in managing spectral data for accurate color reproduction. Participants will learn not only the theoretical background of color and spectral reproduction, but practical guidelines often omitted in technical papers.