Gamuts and globes: the cartography of color

Nathan Moroney

doi:10.1117/12.410779

21 December 2000 Gamuts and globes: the cartography of color

Nathan Moroney

Proceedings Volume 4300, Color Imaging: Device-Independent Color, Color Hardcopy, and Graphic Arts VI; (2000) https://doi.org/10.1117/12.410779
Event: Photonics West 2001 - Electronic Imaging, 2001, San Jose, CA, United States

Abstract

A device gamut can be visualized as a 3D object in a given color space. The globe is approximately a 3D ellipsoid and has been the motivation for centuries of research in the area of geometric projections. Neither the globe nor a typical device gamut is flat but there are often times when it is useful to examine the globe and device gamuts in 2D. Cartography provides a multitude of geometric projections and terminology that can be used for gamut visualization and mapping. This paper provides examples of how the concepts and principles of cartography can be used for gamut visualization and gamut mapping. The Mercator, Cassini, Bonne, Mollweide, and Sinusoidal projections are used to visualize the sRGB gamut. Finally, a simple example using spherical coordinates is used to demonstrate how gamut projection can be used to implement a specific type of gamut mapping.

Citation Download Citation

Nathan Moroney "Gamuts and globes: the cartography of color", Proc. SPIE 4300, Color Imaging: Device-Independent Color, Color Hardcopy, and Graphic Arts VI, (21 December 2000); https://doi.org/10.1117/12.410779

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