Patent ID: 6211973
Filing Date: 2001-04-03
Classification: H04N

Abstract:
A method of transforming device-taken color/density data to calorimetric values, in which said device-taken color/density data obtained by imaging with a device are transformed to calorimetric values by the steps of:correcting device data with correction data to construct setting data, said device data being obtained by imaging with the device in the actual scene a color chart having patches formed thereon in a plurality of colors/densities, and said correction data being obtained by imaging an achromatic chart having achromatic patches formed thereon with the device under the same conditions as said color chart;measuring said color chart with an instrument to provide reference data;setting color transforming conditions from said reference data and said setting data for transforming the device-taken color/density data to calorimetric values; andtransforming the device-taken color/density data to calorimetric values using said color transforming conditions.