Image processing system for processing a digital image and image processing method of processing a digital image

摘要

A processing unit for an image processing apparatus enables the reduction of background noise or disturbances on a scanned image. The processing unit is arranged to apply an image enhancement method to the luminance image data of the scanned image only and merge the obtained modified luminance image data with additional luminance image data obtained from the chrominance image data so as to recover light shades on the background that may have been removed by the image enhancement method.