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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 14 — May. 10, 2009
  • pp: 2686–2692

Multiple-image optical encryption: an improved encoding approach

Xiao Yong-Liang, Zhou Xin, Yuan Sheng, Liu Qiang, and Li Yang-Cong  »View Author Affiliations


Applied Optics, Vol. 48, Issue 14, pp. 2686-2692 (2009)
http://dx.doi.org/10.1364/AO.48.002686


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Abstract

An improved encoding approach to multiple-image optical encryption based on a cascaded phase retrieval algorithm (CPRA) is proposed. The system consists of several stages of a standard 4 - f correlator, in which the keys are not only the phase mask pairs produced by CPRA but also the phase distribution of the output plane of the front stage. The security and the capacity of the system are also discussed. Results indicate that the system can resist known-plaintext attack to some extent, and the encrypted capacity is considerably enhanced. Computer simulations have proved the validity of the proposed idea. The system can be implemented using a pure optical architecture.

© 2009 Optical Society of America

OCIS Codes
(070.2580) Fourier optics and signal processing : Paraxial wave optics
(070.4560) Fourier optics and signal processing : Data processing by optical means
(060.4785) Fiber optics and optical communications : Optical security and encryption
(100.4998) Image processing : Pattern recognition, optical security and encryption

ToC Category:
Fourier Optics and Signal Processing

History
Original Manuscript: November 17, 2008
Revised Manuscript: April 11, 2009
Manuscript Accepted: April 15, 2009
Published: May 6, 2009

Citation
Xiao Yong-Liang, Zhou Xin, Yuan Sheng, Liu Qiang, and Li Yang-Cong, "Multiple-image optical encryption: an improved encoding approach," Appl. Opt. 48, 2686-2692 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-14-2686

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