Patent ID: 6788812
Filing Date: 2004-09-07
Classification: G06T,H04N

Abstract:
A method of automatically color correcting a digital image taken under an ambient light source, comprising:(a) converting the digital image to a selected color space, wherein each of the pixels has an associated set of color space components; b) determining a characteristic color temperature of the ambient light source; (c) selecting a first color component and a second color component of the set of color space components having a first color component value and a second color component value, respectively; (d) determining the number of pixels of the digital image having both their respective first color component value within a predetermined range of first color component values and their second color component values within a predetermined range of second color component values, wherein the range of first color component values and the range of second color component values are based upon the characteristic ambient color temperature; and (e) if the number of pixels from (d) is greater than a pixel threshold value, then for each pixel in the digital image having its respective first color component value within the predetermined range and its second color component value within the predetermined range of second color component values, modifying that pixel's set of color components.