Construction and detection of digital holographic watermarks

Chau Jern Cheng; Li Chien Lin; Wen Tsun Dai

doi:10.1016/j.optcom.2004.12.010

Construction and detection of digital holographic watermarks

Chau Jern Cheng^*, Li Chien Lin, Wen Tsun Dai

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

This study presents an optical watermarking scheme using a digital holographic technique. The digital holographic watermark is constructed by a modified Mach-Zehnder interferometric architecture and a constant-level embedding algorithm, and the watermark detection is optically implemented using VanderLugt 4-f correlator with a weighting matched filter. The detection procedure is a compromise between perceptual quality and correlation robustness, in which the weighting factor selection rule and optimal threshold for the watermarking scheme are given and analyzed. Additionally, the detected correlation is spatially separable and avoided interference from the cover image. Both analytical and experimental results are presented and discussed.

Original language	English
Pages (from-to)	105-116
Number of pages	12
Journal	Optics Communications
Volume	248
Issue number	1-3
DOIs	https://doi.org/10.1016/j.optcom.2004.12.010
Publication status	Published - 2005 Apr 1
Externally published	Yes

Keywords

Digital holography
Optical correlator
Watermarking

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

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10.1016/j.optcom.2004.12.010

Cite this

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title = "Construction and detection of digital holographic watermarks",

abstract = "This study presents an optical watermarking scheme using a digital holographic technique. The digital holographic watermark is constructed by a modified Mach-Zehnder interferometric architecture and a constant-level embedding algorithm, and the watermark detection is optically implemented using VanderLugt 4-f correlator with a weighting matched filter. The detection procedure is a compromise between perceptual quality and correlation robustness, in which the weighting factor selection rule and optimal threshold for the watermarking scheme are given and analyzed. Additionally, the detected correlation is spatially separable and avoided interference from the cover image. Both analytical and experimental results are presented and discussed.",

keywords = "Digital holography, Optical correlator, Watermarking",

author = "Cheng, {Chau Jern} and Lin, {Li Chien} and Dai, {Wen Tsun}",

note = "Funding Information: The authors would like to thank the National Science Council of the Republic of China, Taiwan for financially supporting this research under Contract No. NSC93-2215-E-027-013.",

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doi = "10.1016/j.optcom.2004.12.010",

language = "English",

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TY - JOUR

T1 - Construction and detection of digital holographic watermarks

AU - Cheng, Chau Jern

AU - Lin, Li Chien

AU - Dai, Wen Tsun

N1 - Funding Information: The authors would like to thank the National Science Council of the Republic of China, Taiwan for financially supporting this research under Contract No. NSC93-2215-E-027-013.

PY - 2005/4/1

Y1 - 2005/4/1

N2 - This study presents an optical watermarking scheme using a digital holographic technique. The digital holographic watermark is constructed by a modified Mach-Zehnder interferometric architecture and a constant-level embedding algorithm, and the watermark detection is optically implemented using VanderLugt 4-f correlator with a weighting matched filter. The detection procedure is a compromise between perceptual quality and correlation robustness, in which the weighting factor selection rule and optimal threshold for the watermarking scheme are given and analyzed. Additionally, the detected correlation is spatially separable and avoided interference from the cover image. Both analytical and experimental results are presented and discussed.

AB - This study presents an optical watermarking scheme using a digital holographic technique. The digital holographic watermark is constructed by a modified Mach-Zehnder interferometric architecture and a constant-level embedding algorithm, and the watermark detection is optically implemented using VanderLugt 4-f correlator with a weighting matched filter. The detection procedure is a compromise between perceptual quality and correlation robustness, in which the weighting factor selection rule and optimal threshold for the watermarking scheme are given and analyzed. Additionally, the detected correlation is spatially separable and avoided interference from the cover image. Both analytical and experimental results are presented and discussed.

KW - Digital holography

KW - Optical correlator

KW - Watermarking

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DO - 10.1016/j.optcom.2004.12.010

M3 - Article

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SN - 0030-4018

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SP - 105

EP - 116

JO - Optics Communications

JF - Optics Communications

IS - 1-3

ER -

Construction and detection of digital holographic watermarks

Abstract

Keywords

ASJC Scopus subject areas

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