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Proceedings Paper

Non-MacAdam color discrimination ellipses
Author(s): Peter Goldstein
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Paper Abstract

MacAdam ellipses and the 1976 u'v' chromaticity space are commonly used in the illumination and LED industries. Delta E 2000 (ΔE) is the most up-to-date color difference metric endorsed by CIE and is more reliable than earlier metrics. This paper shows how the ΔE 2000 standard can be used to derive ellipses to be plotted in the well-known 1931 xy color space and examines the validity of MacAdam ellipses and the 1976 u'v' chromaticity space in terms of this metric. The 1976 u'v' chromaticity space is found, in quantitative terms, to be less uniform than the 1931 xy chromaticity space based on ΔE 2000. This paper recommends ΔE calculations as a quantitative tool, the proposed ellipses as a descriptive tool, and the total abandonment of the 1976 u'v' color space.

Paper Details

Date Published: 19 October 2012
PDF: 13 pages
Proc. SPIE 8487, Novel Optical Systems Design and Optimization XV, 84870A (19 October 2012); doi: 10.1117/12.928330
Show Author Affiliations
Peter Goldstein, Philips Color Kinetics (United States)


Published in SPIE Proceedings Vol. 8487:
Novel Optical Systems Design and Optimization XV
G. Groot Gregory; Arthur J. Davis, Editor(s)

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