A system for distinguishing photocopied or laser-printed documents from original documents produced by offset printing, handwriting, or typewriting. The system scans a document at low-resolution and at high-resolution to produce a low-resolution and a high-resolution matrix representation of the presence...http://www.google.es/patents/US20020037093?utm_source=gb-gplus-sharePatente US20020037093 - System for detecting photocopied or laser-printed documents
System for detecting photocopied or laser-printed documents
Número de solicitud: 09/799,790 Número de publicación: US 2002/0037093 A1 Fecha de presentación: 5 Mar 2001 Patente emitida: US6571001 ( Fecha de emisión 27 May 2003)
