gamut area index (GAI)

[4.3.1.19]

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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