Argyll Chart Definitions

Some contributed Argyll chart definition files (.cht files).

• Wolf Faust targets:
  • C1 target
    it8.cht file as shipped with ArgyllCMS can be used
• Christophe Métairie Photographie
  • DigitaL TargeT 003 (produced 2007, batch# 0349)
    Image:DigitalTarget003.cht
• X-Rite/GretagMacbeth
  • (24 patch) ColorChecker (March 2007 edition, see note ^[1] below)
    Image:ColorChecker.cht
  • CIE colour reference files ^[2]
    • Image:ColorChecker_vendor_D50_2deg.cie
    • Image:ColorChecker_vendor_D65_2deg.cie
    • Image:ColorChecker_avg_D50_2deg.cie
    • Image:ColorChecker_avg_D65_2deg.cie

Notes

^[1] Vendor information on the ground truth colour patch data based on X-Rite/GreatagMacbeth data from the BabelColor web site was used: http://www.babelcolor.com/main_level/ColorChecker.htm

Expected XYZ colour values for the D50/2 deg. observer were computed from xyY values provided by BabelColor (based on vendor information).

^[2] Vendor's colour information is compiled from data provided by X-Rite/GreatagMacbeth with the mass produced colour charts. XYZ values for the files has been computed from the provided CIE LAB (D50/2deg) values, chromatic adaptation transformations (where necessary for D65) have been computed using the Bradford transformation.