Std

ASTM E308-22

Standard Practice for Computing the Colors of Objects by Using the CIE System

standard by ASTM International, 08/01/2022

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Full Description

1.1 This practice provides the values and practical computation procedures needed to obtain CIE tristimulus values from spectral reflectance, transmittance, or radiance data for object-color specimens.
1.2 Procedures and tables of standard values are given for computing from spectral measurements the CIE tristimulus values X, Y, Z, and chromaticity coordinates x, y for the CIE 1931 standard observer and X10, Y10, Z10 and x10. y10 for the CIE 1964 supplementary standard observer.
1.3 Standard values are included for the spectral power of six CIE standard illuminants and three CIE recommended fluorescent illuminants. Weight sets are included for tristimulus integration of nine standard or recommended CIE LED illuminants combined with the two standard CIE observers.
1.4 Procedures are included for cases in which data are available only in more limited wavelength ranges than those recommended, or for a measurement interval wider than that recommended by the CIE. This practice is applicable to spectral data obtained in accordance with Practice E1164 with 1-, 5-, 10-, or 20-nm measurement interval.
1.5 This practice includes procedures for conversion of results to color spaces that are part of the CIE system, such as CIELAB and CIELUV (3). Equations for calculating color differences in these and other systems are given in Practice D2244.
1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.7 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.
1.8 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.
 

Product Details

Published:
08/01/2022
Number of Pages:
35
File Size:
1 file , 4.4 MB
Redline File Size:
2 files , 13 MB
Note:
This product is unavailable in Russia, Ukraine, Belarus
 

Document History

  1. ASTM E308-22

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    Standard Practice for Computing the Colors of Objects by Using the CIE System

    • Most Recent

  2. ASTM E308-18


    Standard Practice for Computing the Colors of Objects by Using the CIE System

    • Historical Version

  3. ASTM E308-17


    Standard Practice for Computing the Colors of Objects by Using the CIE System

    • Historical Version

  4. ASTM E308-15


    Standard Practice for Computing the Colors of Objects by Using the CIE System

    • Historical Version

  5. ASTM E308-13


    Standard Practice for Computing the Colors of Objects by Using the CIE System

    • Historical Version

  6. ASTM E308-12


    Standard Practice for Computing the Colors of Objects by Using the CIE System

    • Historical Version

  7. ASTM E308-08


    Standard Practice for Computing the Colors of Objects by Using the CIE System

    • Historical Version

  8. ASTM E308-06


    Standard Practice for Computing the Colors of Objects by Using the CIE System

    • Historical Version

  9. ASTM E308-01


    Standard Practice for Computing the Colors of Objects by Using the CIE System

    • Historical Version

  10. ASTM E308-99


    Standard Practice for Computing the Colors of Objects by Using the CIE System

    • Historical Version