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1 January 2005 Correlation-based watermarking by a digital holographic technique
Chau-Jern Cheng, Li-Chien Lin
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Optical Engineering, Vol. 44, Issue 1, 010501 (January 2005). https://doi.org/10.1117/1.1831191
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.
©(2005) Society of Photo-Optical Instrumentation Engineers (SPIE)
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Chau-Jern Cheng and Li-Chien Lin "Correlation-based watermarking by a digital holographic technique," Optical Engineering 44(1), 010501 (1 January 2005). https://doi.org/10.1117/1.1831191
Published: 1 January 2005
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Cited by 4 scholarly publications.
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KEYWORDS
Digital watermarking
Holography
Digital holography
Holograms
Optical correlators
Spatial light modulators
CCD cameras
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