Patent ID: 6791565
Filing Date: 2004-09-14
Classification: H04N

Abstract:
A method for generating correction curves for correcting image data inputted to an image display unit, comprising:a 1st correction curve generating step of generating a 1st correction curve based on an tone reproduction characteristic in an illuminated surround of said image display unit under illumination of a predetermined luminance value, said tone reproduction characteristic in an illuminated surround having been approximated to an tone reproduction characteristic in a dark surround of the image display unit; a 2nd correction curve generating step of generating a 2nd correction curve for eliminating a difference between a reflection characteristic for each color component of an output provided from said image display unit and reflected by a predetermined projection plane and a reflection characteristic for each color component of the output provided from said image display and reflected by a reference projection plane; and a 3rd correction curve generating step of generating a 3rd correction curve which eliminates a difference in color components ratios of a predetermined external illumination.