Optical and digital technique for watermark detection

Aidan Mooney; John G. Keating

doi:10.1117/12.506092

23 October 2003 Optical and digital technique for watermark detection

Aidan Mooney, John G. Keating

Proceedings Volume 5202, Optical Information Systems; (2003) https://doi.org/10.1117/12.506092
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

A digital watermark is a visible, or preferably invisible, identification code that is permanently embedded in some digital data to prove owner authentication and provide protection of that document. In this paper we utilize a watermark generation technique based on the use of chaotic functions and the motivation for using these functions is presented. The technique used for watermark embedding is also described, together with a watermark detection scheme based on an optical Matched Filter correlator. We provide results of optical simulations of the watermark detection scheme and show that correlation-based detection is an excellent method for detecting chaotically-generated watermarks embedded in the Fourier domain using multiplicative embedding. We also show that it is possible to detect chaotically-generated watermarks in images that have been subjected to noise.

Citation Download Citation

Aidan Mooney and John G. Keating "Optical and digital technique for watermark detection", Proc. SPIE 5202, Optical Information Systems, (23 October 2003); https://doi.org/10.1117/12.506092

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