Patent ID: 6035058
Filing Date: 2000-03-07
Classification: G06K,H04N

Abstract:
An image processing system for automatic color dropout using Luminance-Chrominance space comprising:means for scanning a color document and providing a digital image;means for selecting at least one non-dropout color;means for transforming said non-dropout color to said Luminance-Chrominance space;means for transforming each pixel of said scanned image to said Luminance-Chrominance space;means for computing a distance of each of said image pixels from said non-dropout color;means for converting each of said image pixels to black if said distance from said non-dropout color is smaller or equal to a threshold value;means for converting each of said image pixels to white if said distance from said non-dropout color is greater than said threshold value; andmeans for storing said black and white pixels.