uses Judd-type (translational) [[white point]] adaptation (in contrast with CIELAB, which uses a "wrong" [[von Kries transform]]).{{cite journal|first=Deane B.|last=Judd|title=Hue saturation and lightness of surface colors with chromatic illumination|journal=[[JOSA]]|volume=30|issue=1|date=January 1940|pages=2–32| url=http://www.opticsinfobase.org/abstract.cfm?URI=josa-30-1-2|doi=10.1364/JOSA.30.000002}} This can produce useful results when working with a single illuminant, but can predict [[imaginary color]]s (i.e., outside the [[spectral locus]]) when attempting to use it as a [[chromatic adaptation transform]].Mark D Fairchild, ''Color Appearance Models.'' Reading, MA: Addison-Wesley, 1998. The translational adaptation transform used in CIELUV has also been shown to perform poorly in predicting corresponding colors.D. H. Alman, R. S. Berns, G. D. Snyder, and W. A. Larson, "Performance testing of color difference metrics using a color-tolerance dataset." ''Color Research and Application