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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 21 — Jul. 20, 2008
  • pp: 3808–3816

Role of phase key in the double random phase encoding technique: an error analysis

David S. Monaghan, Guohai Situ, Unnikrishnan Gopinathan, Thomas J. Naughton, and John T. Sheridan  »View Author Affiliations


Applied Optics, Vol. 47, Issue 21, pp. 3808-3816 (2008)
http://dx.doi.org/10.1364/AO.47.003808


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Abstract

We perform a numerical analysis of the double random phase encryption–decryption technique to determine how, in the case of both amplitude and phase encoding, the two decryption keys (the image- and Fourier-plane keys) affect the output gray-scale image when they are in error. We perform perfect encryption and imperfect decryption. We introduce errors into the decrypting keys that correspond to the use of random distributions of incorrect pixel values. We quantify the effects that increasing amounts of error in the image-plane key, the Fourier-plane key, and both keys simultaneously have on the decrypted image. Quantization effects are also examined.

© 2008 Optical Society of America

OCIS Codes
(000.4430) General : Numerical approximation and analysis
(070.2580) Fourier optics and signal processing : Paraxial wave optics
(100.2000) Image processing : Digital image processing
(200.4740) Optics in computing : Optical processing

ToC Category:
Image Processing

History
Original Manuscript: February 13, 2008
Revised Manuscript: June 9, 2008
Manuscript Accepted: June 23, 2008
Published: July 15, 2008

Citation
David S. Monaghan, Guohai Situ, Unnikrishnan Gopinathan, Thomas J. Naughton, and John T. Sheridan, "Role of phase key in the double random phase encoding technique: an error analysis," Appl. Opt. 47, 3808-3816 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-21-3808

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