Patent ID: 6437863
Filing Date: 2002-08-20
Classification: A61B,G01J

Abstract:
A method for calibrating a skin color measuring instrument to allow measurement of skin coloration varying over a range of coloration, said method comprising the steps of:(a) measuring with the instrument a calibration standard characterized by three color coordinates, wherein the values of said coordinates provide substantially the same calibration as that provided by a calibration standard being made of non-skin material and characterized by CIE (1931), standard illuminant C, wherein the values of said coordinates are Y=31.5-35, x=approximately 0.37-0.38 and y=approximately 0.34-0.35; and (b) adjusting the response of the instrument to force the measured values of the color coordinates Y, x and y in step (a) to be substantially the same as the respective color coordinate values of said calibration standard.