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BS ISO 18314-4:2020

BS ISO 18314-4:2020

Withdrawn

Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

Analytical colorimetry Metamerism index for pairs of samples for change of illuminant

Amended by

BS EN ISO 18314-4:2021

Available format(s)

Hardcopy , PDF

Withdrawn date

19-07-2021

Language(s)

English

Published date

18-08-2020

Publisher

British Standards Institution

This document specifies a formalism for the calculation of the illuminant metamerism of solid surface colours

This document specifies a formalism for the calculation of the illuminant metamerism of solid surface colours. It cannot be applied to colours of effect coatings without metrical adaptation.This document only covers the phenomenon of metamerism for change of illuminant, which has the greatest meaning in practical application. In the case of chromaticity coordinates of a pair of samples under reference conditions that do not exactly match, recommendations are given on which correction measures are to be taken. Regarding the reproduction of colours, the metamerism index is used as a measure of quality in order to specify tolerances for colour differences between a colour sample and a colour match under different illumination conditions.The quantification of the illuminant metamerism of pairs of samples is formally performed by a colour difference assessment, for which tolerances that are common for the evaluation of residual colour differences can be used. NOTE In the colorimetric literature and textbooks, the term geometric metamerism is sometimes used for the case that two colours appear to be the same under a specific geometry for visual assessment and selected standard observer and standard illuminant pair, but is perceived as two different colours at changed observation geometry. The term geometric metamerism is different to metamerism described in this document.

Committee
W/-
DocumentType
Standard
ISBN
9780580971631
Pages
32
ProductNote
THIS STANDARD ALSO REFERES TO : ISO/CIE 11664-2
PublisherName
British Standards Institution
Status
Withdrawn

Standards Relationship
ISO 18314-4:2020 Identical

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Hardcopy - English
PDF - English
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