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Norm

ÖNORM EN ISO/CIE 11664-4

Issue date: 2020 01 15

Colorimetry - Part 4: CIE 1976 L*a*b* colour space (ISO/CIE 11664-4:2019)

This document specifies a method of calculating the coordinates of the CIE 1976 L*a*b* colour space, including correlates of lightness, chroma and hue. It includes two me...
Valid
Publisher:
Austrian Standards International
Format:
Digital | 14 Pages
Language:
German | English | Download GER/ENG
Optionally co-design standards:
This document specifies a method of calculating the coordinates of the CIE 1976 L*a*b* colour space, including correlates of lightness, chroma and hue. It includes two methods for calculating Euclidean distances in this space to represent the perceived magnitude of colour differences. This document is applicable to tristimulus values calculated using colour-matching functions of the CIE 1931 standard colorimetric system or the CIE 1964 standard colorimetric system. This document can be used for the specification of colour stimuli perceived as belonging to a reflecting or transmitting object, where a three-dimensional space more uniform than tristimulus space is required. This document does not apply to colour stimuli perceived as belonging to an area that appears to be emitting light as a primary light source, or that appears to be specularly reflecting such light. This document is applicable to self-luminous displays, such as cathode ray tubes, if they are being used to simulate reflecting or transmitting objects and if the stimuli are appropriately normalized. Calculating the reverse transformation is shown in Annex A.
ÖNORM EN ISO/CIE 11664-4
2020 01 15
Colorimetry - Part 4: CIE 1976 L*a*b* colour space (ISO/CIE 11664-4:2019)
Norm
ÖNORM EN ISO 11664-4
2012 05 15
Colorimetry - Part 4: CIE 1976 L*a*b* Colour space (ISO 11664-4:2008)
Norm
ÖNORM EN ISO 11664-4
2011 08 01
Colorimetry - Part 4: CIE 1976 L*a*b* Colour space (ISO 11664-4:2008)
Norm
Norm
ISO/CIE 11664-1:2019
Issue date : 2019 06 12
Colorimetry — Part 1: CIE standard colorimetric observers
Norm
ISO/CIE 11664-4:2019
Issue date : 2019 06 19
Colorimetry — Part 4: CIE 1976 L*a*b* colour space