Review of measures for light-source color rendition and considerations for a two-measure system forcharacterizing color rendition.

Opt Express. 2013 ;21(8):10393-411.

Houser KW, Wei M, David A, Krames MR, Shen XS.

Department of Architectural Engineering, The Pennsylvania State University, University Park, PA 16802, USA. [email protected]



Twenty-two measures of color rendition have been reviewed and summarized. Each measure was computed for 401 illuminants comprising incandescent, light-emitting diode (LED) -phosphor, LED-mixed, fluorescent, high-intensity discharge (HID), and theoretical illuminants. A multidimensional scaling analysis (Matrix Stress = 0.0731, R(2) = 0.976) illustrates that the 22 measures cluster into three neighborhoods in a two-dimensional space, where the dimensions relate to color discrimination and color preference. When just twomeasures are used to characterize overall color rendition, the most information can be conveyed if one is a reference-based measure that is consistent with the concept of color fidelity or quality (e.g., Q(a)) and the other is a measure of relative gamut (e.g., Q(g)).

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