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ISO/CIE 11664-4:2019

Colorimetry - Part 4: CIE 1976 L*a*b* colour space

STANDARD by International Organization for Standardization / CIE, 07/01/2019

FormatLanguagePriceAvaliablity
Secure PDF English € 72.00 EUR Immediate Download
Printed Edition English € 72.00 EUR Ships in 1-2 business days
Printed Edition + PDF English € 101.00 EUR Immediate Download

上列價格為CIE國際定價,向CIE-Taiwan訂購可享折扣優惠,CIE-Taiwan會員更享有會員優惠價,歡迎來電03-5743875或e-mail : cie_taiwan@itri.org.tw 洽詢。

Full Description

This document was prepared by the International Commission on Illumination (CIE) in cooperation with Technical Committee ISO/TC 274, Light and lighting.

This first edition of ISO/CIE 11664-4 cancels and replaces ISO 11664-4:2008 | CIE S 014-4:2007, of which it constitutes a minor revision. The document has been editorially revised as per current ISO and CIE rules and the references have been updated.

The 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.

The 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.

The 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.

The 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.

Product Details

Published:07/01/2019

Number of Pages:8

File Size:1 file , 1.7MB





 

ISO/CIE 11664-3:2019

Colorimetry - Part 3: CIE tristimulus values

STANDARD by International Organization for Standardization / CIE, 07/01/2019

FormatLanguagePriceAvaliablity
Secure PDF English € 72.00 EUR Immediate Download
Printed Edition English € 72.00 EUR Ships in 1-2 business days
Printed Edition + PDF English € 101.00 EUR Immediate Download

上列價格為CIE國際定價,向CIE-Taiwan訂購可享折扣優惠,CIE-Taiwan會員更享有會員優惠價,歡迎來電03-5743875或e-mail : cie_taiwan@itri.org.tw 洽詢。

Full Description

This document was prepared by the International Commission on Illumination (CIE) in cooperation with Technical Committee ISO/TC 274, Light and lighting.

This first edition of ISO/CIE 11664-3 cancels and replaces ISO 11664-3:2012, CIE S 014-3:2011, of which it constitutes a minor revision. The document has been editorially revised as per current ISO and CIE rules and the references have been updated.

The document specifies methods of calculating the tristimulus values of colour stimuli for which the spectral distributions are provided. These colour stimuli can be produced by self-luminous light sources or by reflecting or transmitting objects.

This document requires that the colour stimulus function be tabulated at measurement intervals of 5 nm or less in a wavelength range of at least 380 nm to 780 nm. Extrapolation methods are suggested for cases where the measured wavelength range is less than 380 nm to 780 nm.

The standard method is defined as summation at 1 nm intervals over the wavelength range from 360 nm to 830 nm. Alternative abridged methods are defined for larger intervals (up to 5 nm) and shorter ranges (down to 380 nm to 780 nm). The alternative methods are to be used only when appropriate and when the user has reviewed the impact on the final results.

--Colour-matching functions for the CIE 1964 standard colorimetric observer.

This document can be used in conjunction with the CIE 1931 standard colorimetric observer or the CIE 1964 standard colorimetric observer.

Product Details

Published:07/01/2019

Number of Pages:9

File Size:1 file , 1.1MB





 

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