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A print-and-scan resilient digital watermark for card authentication

By Anthony T. S. Ho and Feng Shu

Abstract

<p>In this paper, a secure card authentication system based on digital watermarking is presented. A sequence of identification characters, e.g. owner's ID number is inserted into the photograph, thus a linkage between the photograph and its owner can be established. The print-and-scan process is successfully overcome by our transform coefficient polarity based watermarking algorithm. The retrieval algorithm is capable of verifying whether the inspected card is authorized. We apply our algorithm for 105 photographs and the success rate achieved is better than 96%.</p

Year: 2003
DOI identifier: 10.1109/ICICS.2003.1292640
OAI identifier: oai:epubs.surrey.ac.uk:1931

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