Definitions
Chromaticity Diagram
Plane diagram in which points specified by chromaticity coordinates represent the chromaticities of color stimuli [1]
Note: In the CIE standard colorimetric systems, y is normally plotted as ordinate and x as abscissa, to obtain an x, y chromaticity diagram.
Purity (of a Color Stimulus)
Measure of the proportions of the amounts of the monochromatic stimulus and of the specified achromatic stimulus that, when additively mixed, match the color stimulus considered.
Note 1: In the case of purple stimuli, the monochromatic stimulus is replaced by a stimulus whose chromaticity is represented by a point on the purple boundary.
Note 2: The proportions can be measured in various ways (see “Excitation Purity” and “Colorimetric Purity”).
Excitation Purity [pe]
Quantity defined by the ratio NC/ND of two collinear distances on the chromaticity diagram of the CIE 1931 or 1964 standard colorimetric systems, the first distance being that between the point C...
This is a preview of subscription content, log in via an institution.
References
Commission Internationale d’Eclairage: International lighting vocabulary. CIE S 017/E:2011. see also http://eilv.cie.co.at
Commission Internationale d’Eclairage: Colorimetry – Part 3: CIE Tristimulus Values. CIE S 14-3/E (2011)
Commission Internationale d’Eclairage: Colorimetry, 3rd edn. CIE 015 (2004)
Schanda, J.: CIE colorimetry, Chap 3. In: Schanda, J. (ed.) CIE Colorimetry – Understanding the CIE System. Wiley Interscience (2007)
Commission Internationale d’Eclairage: Colorimetry – Part 5: CIE 1976 L*u*v* Colour Space and u′, v′ Uniform Chromaticity Scale Diagram. CIE S 014-5/E (2009)
Commission Internationale d’Eclairage: Colorimetry – Part 2: CIE Standard Illuminants. CIE S 124-2/E (2007)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2016 Springer Science+Business Media New York
About this entry
Cite this entry
Schanda, J. (2016). CIE Chromaticity Diagrams, CIE Purity, CIE Dominant Wavelength. In: Luo, M.R. (eds) Encyclopedia of Color Science and Technology. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-8071-7_325
Download citation
DOI: https://doi.org/10.1007/978-1-4419-8071-7_325
Published:
Publisher Name: Springer, New York, NY
Print ISBN: 978-1-4419-8070-0
Online ISBN: 978-1-4419-8071-7
eBook Packages: Physics and AstronomyReference Module Physical and Materials ScienceReference Module Chemistry, Materials and Physics