A method and system automatically determines proper background values for a document. A histogram of the document is generated and it is determined whether a background characteristic of the document is uniform. If the background is uniform, a white background value is set equal to a first calculated...http://www.google.de/patents/US6043900?utm_source=gb-gplus-sharePatent US6043900 - Method and system for automatically detecting a background type of a scanned document utilizing a leadedge histogram thereof
