gamut area index (GAI)


NOTE: This term was added in RP-16-17 Addendum 1.

GAI* is based on  the  area  of  the  polygon  formed  by  the  eight  test-color samples (TCS) in  the  CIE  1976  uniform  color  space  under  the  light  source  of  interest,  relative  to  the  polygon  formed  by  the  TCSs when  illuminated  by  an  equal  energy  spectrum  (EES) light source.


* Rea MS, Freysinnier-Nova JP. Color rendering: A tale of two metrics. Color Research and Application. 2008;33(3):192-202. doi:10.1002/col.20399

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