ASTM E2022-99
Historical Standard: ASTM E2022-99 Standard Practice for Calculation of Weighting Factors for Tristimulus Integration
SUPERSEDED (see Active link, below)
ASTM E2022
1. Scope
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 funtions.
1.2 This practice provides methods for calculating tables of values for use with spectral reflectance or transmittance data, which are corrected for the influences of finite bandpass. In addition, this practice provides methods for calculating weighting factors from spectral data which has not been bandpass corrected. In the latter case, a correction for the influence of bandpass on the resulting tristimulus values is built in to the tristimulus integration through the weighting factors.
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 and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
E284 Terminology of Appearance
E308 Practice for Computing the Colors of Objects by Using the CIE System
E2729 Practice for Rectification of Spectrophotometric Bandpass Differences
CIE Standard
CIE Standard S 002 Colorimetric Observers Available from USNC-CIE Publications Office (International Commission on Illumination), C/o Thomas M. Lemons, TLA-Lighting Consultants, Inc., 7 Pond St., Salem, MA 01970, http://www.cie-usnc.org.Keywords
color-matching functions; illuminant; illuminant-observer weights; source; tristimulus weighting factors; Color-matching functions; Illuminant-observer weights; Tristimulus value; Weighting factors;
ICS Code
ICS Number Code 85.060 (Paper and board)
DOI: 10.1520/E2022-99
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