Sökning: id:"swepub:oai:DiVA.org:kth-47857" >
Method of encoding ...
Abstract
Ämnesord
Stäng
- Systems and methods for generating and decoding authenticatable graphical bar codes are described. In one aspect, a corroborative signed message is generated from information (12) to be encoded, and a base image (22) is modulated with a graphical encoding of the signed message to produce a marked image (14). In another aspect, a signed message is extracted from a marked image (14) and a base image (22). The extracted signed message is decoded to produce a decoded message. Information (12) encoded in the marked image (14) is extracted from the decoded message and authenticated.
Ämnesord
- NATURVETENSKAP -- Data- och informationsvetenskap -- Datavetenskap (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences -- Computer Sciences (hsv//eng)
Nyckelord
- SRA - ICT
- SRA - Informations- och kommunikationsteknik
Publikations- och innehållstyp
- pop (ämneskategori)
- pat (ämneskategori)