MARK AUTHENTICATION WITH DISTORTION TOLERANCE

Abstract

Methods, systems, and apparatus, including medium-encoded computer program products, for mark authentication with distortion tolerance. An electronic signature can be obtained as the data series for a candidate mark. The data series values of the electronic signature can be transformed to generate two or more transformed data series versions of the electronic signature. Hash identifiers for the electronic signature and for the two or more transformed data series versions of the electronic signature can be derived. The hash identifiers can be used to retrieve a set of two or more results from a database of genuine mark signatures. At least one electronic signature retrieved for at least one of the two or more results from the database can be compared with the electronic signature for the candidate mark to confirm the candidate mark is genuine.

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