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Proceedings Paper

Multi-image hiding method based on polarization multiplexing digital holography
Author(s): Zhuqing Zhu; Shaotong Feng; Shouping Nie; Jiajie Zhang
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Paper Abstract

A novel algorithm of multi-image hiding method is presented based on polarization multiplexing digital holography (PMDH). In our single wavelength PMDH scheme, four beams, two p-polarized beams and two s-polarized beams, are formed by two Polarization Beam Splitters (PBS) in the Mach-Zehnder interferometer. Then two different object waves with mutually orthogonal polarization states interfere corresponding reference waves respectively. Therefore two objects can be acquired from the compound holography recorded by CCD with proper incident angle between two reference beams simultaneously. The hologram storing multi-image is then superposed on the discrete-cosine-transform (DCT) domain of the content image, and the extraction process only requires the watermarked image without content image. Simulation results also demonstrate that the embedded multi-image can be successfully extracted under different kinds of attacks.

Paper Details

Date Published: 17 November 2010
PDF: 6 pages
Proc. SPIE 7848, Holography, Diffractive Optics, and Applications IV, 784825 (17 November 2010); doi: 10.1117/12.869844
Show Author Affiliations
Zhuqing Zhu, Nanjing Normal Univ. (China)
Shaotong Feng, Nanjing Normal Univ. (China)
Shouping Nie, Nanjing Normal Univ. (China)
Jiajie Zhang, Nanjing Normal Univ. (China)

Published in SPIE Proceedings Vol. 7848:
Holography, Diffractive Optics, and Applications IV
Yunlong Sheng; Chongxiu Yu; Linsen Chen, Editor(s)

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