Patent ID: 7804978

Claim:
A method of reading a watermark, of the type comprising a step of determining, by a processor, at least one watermarking message contained in a data set, possibly preceded by a step of determining at least one suite of parameters of a watermarking channel undergone by said data set, each suite of channel parameters comprising at least one channel parameter, wherein said step of determining at least one watermarking message and said prior step of determining at least one suite of channel parameters comprises (comprise): an estimation phase, consisting in processing at least one batch of data comprising data of said data set, so as to obtain N estimated element(s), with N≧0; and a verification phase, consisting in validating or invalidating, in view of the entirety or of at least a subset of said data set, each estimated element; where each estimated element is an estimated watermarking message, in the case of said step of determining at least one watermarking message, and a suite of estimated-channel parameters, in the case of said prior step of determining at least one suite of channel parameters.