Mooney, Aidan and Keating, John
Optical and Digital Technique for Watermark Detection.
The International Symposium on Optical Science and Technology, 5202.
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.
||Copyright 2003 Society of Photo-Optical Instrumentation
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||Watermarking: Chaotic Functions: Multiplicative Embedding: Matched Filtering: Noise Analysis:
||Science & Engineering > Computer Science
||17 Oct 2007
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