A method and system for processing mail pieces or substrates containing data printed thereon involves scanning a mail piece or substrate and obtaining information concerning the printed data. The information is processed to determine if the data is readable. Non readable data information is processed...http://www.google.fr/patents/US6058190?utm_source=gb-gplus-shareBrevet US6058190 - Method and system for automatic recognition of digital indicia images deliberately distorted to be non readable
Method and system for automatic recognition of digital indicia images ...