US Patent 7751084 Image processing apparatus, image processing method, and program

An image processing apparatus of the present invention compares the density value of K-color at each position around a blank character with a reference density value, thereby deciding whether it is necessary to remove other color components. Based on the result of a decision, the apparatus removes the color components. Thus, other color components can be removed only in the region where the density value of K-color is high. Hence, when a background image is an uneven image, a kickback processing can be performed suitably around the blank character.