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Optical and Digital Technique for Watermark Detection

Mooney, Aidan and Keating, John (2003) Optical and Digital Technique for Watermark Detection. The International Symposium on Optical Science and Technology, 5202.

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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.

Item Type: Article
Additional Information: Copyright 2003 Society of Photo-Optical Instrumentation Engineers. This paper was published in The International Symposium on Optical Science and Technology and is made available as an electronic reprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Keywords: Watermarking: Chaotic Functions: Multiplicative Embedding: Matched Filtering: Noise Analysis:
Subjects: Science & Engineering > Computer Science
Item ID: 739
Depositing User: Aidan Mooney
Date Deposited: 17 Oct 2007
Journal or Publication Title: The International Symposium on Optical Science and Technology
Publisher: SPIE
Refereed: Yes
URI:

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