An optical watermarking solution for authenticating printed document

Publication Type

Conference Proceeding Article

Publication Date

4-2001

Abstract

We present a novel and simple optical watermarking system aiming at overriding some practical problems when the state-of-the art digital watermarking techniques are applied to authenticate printed documents. We name our technique optical watermarking differing from traditional digital watermarking in the sense that the watermark extraction is done by some optical and visual means like a photocopier, while no digitization is required. The system security is guaranteed by adopting a content-based key share scheme originated from visual cryptography. The non-obtrusiveness effect of the watermarked document is achieved by modulating the watermark into a higher resolution grating level. Experimental results demonstrate the availability and practicality of the proposed approach.

Keywords

document authentication, integrity verification, secret share, watermarking

Discipline

Information Security

Research Areas

Cybersecurity

Publication

Proceedings of the International Conference on Information Technology: Coding and Computing, 2-4 April 2001, Las Vegas, Nevada

First Page

65

Last Page

70

ISBN

9780769510620

Identifier

10.1109/ITCC.2001.918767

Publisher

IEEE Computer Society

City or Country

Los Alamitos, CA

Additional URL

http://dx.doi.org/10.1109/ITCC.2001.918767

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