A method of neutral color detection for use in color copiers and scanners is provided. The method includes reading (10) an input page. The contents of the page are detected (12) and it is determined (14) if the page is neutral in color. If the page is not neutral in color (20), the page is then divided...http://www.google.fr/patents/US6249592?utm_source=gb-gplus-shareBrevet US6249592 - Multi-resolution neutral color detection