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Color Gamut Boundaries in CIELAB Space

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Color gamut boundaries in CIELAB space are determined for two CIE standard observers, CIE 1931 2° and CIE 1964 10°, under two illuminants, D50 and D65, using spectral and optimal stimuli. Computational methods and formulas based on Grassmann's law are given. Two-dimensional projection of the computed color gamut provides the boundary for all possible stimuli, real and imaginary, and is the closest analogue to the chromaticity diagram of the CIEXYZ or CIELUV space. We also discuss reasons of no chromaticity diagram in CIELAB space. This computation leads to the derivation of the most saturated primary colors for block dyes. Two-dimensional gamut projections of several sets of block dyes are then computed under conditions of the CIE 1931 color match functions and illuminants D50 and D65. The validity of the Grassmann's law is examined for additive and subtractive color mixing of block dyes. Finally, color gamut boundaries of two real devices are presented for comparisons.
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Document Type: Research Article

Publication date: January 1, 2003

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  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

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