Patent ID: 6677959
Filing Date: 2004-01-13
Classification: G06T,G09G

Abstract:
A method for adjusting a digital image without introducing color distortion, the image being formed of a plurality of color dots, each dot having at least three independent values representing the strength of the three primary colors R, G, and B, each strength value lying between a minimum and a maximum of the dynamic range for the system, comprising:determining a dot maximum of the R, G, or B strength values in RGB color space for each dot within the image for establishing a plurality of dot maximums for the plurality of color dots within the image; determining a dot scaling factor for the dot maximum for each dot which scales the dot maximum to a scaled dot maximum for each dot, the strength value of which is less than or equal to the maximum of the dynamic range; and applying the dot scaling factor for each dot within the image to each of the R, G and B strength values for each dot so that the ratios of the strength values between R, G and B for the dot remain the same after scaling as they were before scaling.