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ASTM E2022-16(2021)

Current Reaffirmation

Standard Practice for Calculation of Weighting Factors for Tristimulus Integration

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1.1 This practice describes the method to be used for calculating tables of weighting factors for tristimulus integration using custom spectral power distributions of illuminants or sources, or custom color-matching functions.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


5.1 This practice is intended to provide a method that will yield uniformity of calculations used in making, matching, or controlling colors of objects. This uniformity is accomplished by providing a method for calculation of weighting factors for tristimulus integration consistent with the methods utilized to obtain the weighting factors for common illuminant-observer combinations contained in Practice E308.

5.2 This practice should be utilized by persons desiring to calculate a set of weighting factors for tristimulus integration who have custom source, or illuminant spectral power distributions, or custom observer response functions.

SDO ASTM: ASTM International
Document Number E2022
Publication Date June 1, 2021
Language en - English
Page Count 10
Revision Level 16(2021)
Supercedes
Committee E12.04
Publish Date Document Id Type View
Aug. 1, 2016 E2022-16 Revision
June 1, 2011 E2022-11 Revision
Dec. 1, 2008 E2022-08 Revision
July 1, 2006 E2022-06E01 Revision
July 1, 2006 E2022-06 Revision
June 10, 2001 E2022-99 Revision
June 10, 2001 E2022-01 Revision
June 1, 2021 E2022-16R21 Reaffirmation