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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 23 — Dec. 1, 2006
  • pp: 3438–3440

Optical image encryption with Hartley transforms

Linfei Chen and Daomu Zhao  »View Author Affiliations


Optics Letters, Vol. 31, Issue 23, pp. 3438-3440 (2006)
http://dx.doi.org/10.1364/OL.31.003438


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Abstract

We propose a new method for image encryption based on Hartley transforms that is a real transform and can be realized by spatially incoherent or coherent illumination. The proposed optical implementation is based on a Michelson-type interferometer in which the pure random intensity is distributed at the Hartley plane in encryption. Computer simulations prove it is possible. A Hartley hologram method is also given and described to resolve the sign ambiguity problem that would be encountered in image reconstruction.

© 2006 Optical Society of America

OCIS Codes
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(070.2580) Fourier optics and signal processing : Paraxial wave optics
(100.2000) Image processing : Digital image processing

ToC Category:
Image Processing

History
Original Manuscript: June 5, 2006
Revised Manuscript: July 27, 2006
Manuscript Accepted: September 15, 2006
Published: November 9, 2006

Citation
Linfei Chen and Daomu Zhao, "Optical image encryption with Hartley transforms," Opt. Lett. 31, 3438-3440 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-23-3438


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