[CMC].

Abstract

CMC is a modification of CIELAB developed by the Color Measurement Committee of the Society of Dyers and Colorists. This modification is described in AATCC Test Method 173, “CMC: Calculation of Small Color Differences for Acceptability.” Color differences calculated using the CMC method are believed to correlate better with visual assessment than color differences calculated using other instrumental systems. The CMC equations are based on an ellipsoidal space like that diagrammed below.