Patent ID: 8934660
Filing Date: 2015-01-13
Classification: G06T,H04N

Abstract:
1. A method of decoding a pattern of marks satisfying a predetermined constraint in an encoded image, to reconstruct a recovered message, the method comprising the steps of: (a) determining a set of data items into which candidate messages can be partitioned; (b) determining a set of candidate messages; (c) selecting a current candidate message from the determined set of candidate messages; (d) applying an encoding method to said current candidate message to generate a current pattern of marks by; (e) if the current pattern of marks does not permit addition of a further mark without violating the predetermined constraint, then the current candidate message is one of said recovered message and a null set; (f) if the current pattern of marks does permit addition of a further mark without violating the predetermined constraint, then the method comprises the further steps of: