typedef struct {
 	icStandardObserver						stdObserver;				/* Standard observer */
 	icXYZNumber						backing;				/* XYZ for backing material */
 	icMeasurementGeometry						geometry;				/* Measurement geometry */
 	icMeasurementFlare						flare;				/* Measurement flare */
 	icIlluminant						illuminant;				/* Illuminant */
 } icMeasurement;