VERFAHREN UND VORRICHTUNG ZUR VERBESSERUNG DER SCHÄRFE EINES BILDES

摘要

The invention provides for a method of sharpening an image to be sent to a printhead. The method includes the steps of receiving an RGB (red, green, blue) data set indicative of the image, and deriving an initial luminance channel from the received data set. The method also includes the steps of sharpening the initial luminance channel to form a revised luminance channel, and incorporating the revised luminance channel into the data set.