Please use this identifier to cite or link to this item: https://doi.org/10.1117/12.848190
Title: Optical image encryption with a bit-plane separation method in phase-shifting digital holography
Authors: Chen, W. 
Quan, C. 
Tay, C.J. 
Keywords: Arnold transform (ART)
Bit plane
Double random-phase masks
Fractional Fourier transform (FRFT)
Phase-shifting digital holography
Issue Date: 2010
Source: Chen, W., Quan, C., Tay, C.J. (2010). Optical image encryption with a bit-plane separation method in phase-shifting digital holography. Proceedings of SPIE - The International Society for Optical Engineering 7522 : -. ScholarBank@NUS Repository. https://doi.org/10.1117/12.848190
Abstract: In this paper, we propose a method for optical image encryption based on fractional Fourier transform (FRFT) and Arnold transform (ART) in phase-shifting digital holography. An input image is first divided into eight bit planes, and each bit plane is encrypted based on double random-phase masks and FRFT. Complex amplitude for the object is retrieved by phase-shifting digital holography in the hologram plane. The real and imaginary parts of the retrieved complex amplitudes for the 0th-7th bit planes are further encrypted using ART algorithm. Numerical results are shown to demonstrate the feasibility and effectiveness of the proposed technique. The sensitivity of security parameters, such as function orders in FRFT and iteration number in ART method, is also analyzed. © 2010 SPIE.
Source Title: Proceedings of SPIE - The International Society for Optical Engineering
URI: http://scholarbank.nus.edu.sg/handle/10635/51227
ISBN: 9780819479129
ISSN: 0277786X
DOI: 10.1117/12.848190
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