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Optical Engineering • Open Access

Correlation-based watermarking by a digital holographic technique

Paper Abstract

We propose and demonstrate an optical watermarking scheme using a digital holographic technique. The holographic watermark is constructed by an off-axis diffuse-type hologram and embedded into a cover image with appropriate weighting. Detection of the hidden mark is optically implemented using a VanderLugt correlator with the watermarked matched filter. Detected correlation is spatially separable and avoids interference from the cover image.

Paper Details

Date Published: 1 January 2005
PDF: 2 pages
Opt. Eng. 44(1) 010501 doi: 10.1117/1.1831191
Published in: Optical Engineering Volume 44, Issue 1
Show Author Affiliations
Chau-Jern Cheng, National Taipei Univ. of Technology (Taiwan)
Li-Chien Lin, Feng-Chia Univ. (Taiwan)

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