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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 15 — Jul. 18, 2011
  • pp: 13779–13786

Pure optical dynamical color encryption

Fabian Mosso, Myrian Tebaldi, John Fredy Barrera, Néstor Bolognini, and Roberto Torroba  »View Author Affiliations


Optics Express, Vol. 19, Issue 15, pp. 13779-13786 (2011)
http://dx.doi.org/10.1364/OE.19.013779


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Abstract

We introduce a way to encrypt-decrypt a color dynamical phenomenon using a pure optical alternative. We split the three basic chromatic channels composing the input, and then each channel is processed through a 4f encoding method and a theta modulation applied to the each encrypted frame in every channel. All frames for a single channel are multiplexed. The same phase mask is used to encode all the information. Unlike the usual procedure we do not multiplex the three chromatic channels into a single encoding media, because we want to decrypt the information in real time. Then, we send to the decoding station the phase mask and the three packages each one containing the multiplexing of a single channel. The end user synchronizes and decodes the information contained in the separate channels. Finally, the decoding information is conveyed together to bring the decoded dynamical color phenomenon in real-time. We present material that supports our concepts.

© 2011 OSA

OCIS Codes
(030.6140) Coherence and statistical optics : Speckle
(070.4560) Fourier optics and signal processing : Data processing by optical means
(060.4785) Fiber optics and optical communications : Optical security and encryption

ToC Category:
Image Processing

History
Original Manuscript: April 12, 2011
Revised Manuscript: June 19, 2011
Manuscript Accepted: June 21, 2011
Published: July 5, 2011

Citation
Fabian Mosso, Myrian Tebaldi, John Fredy Barrera, Néstor Bolognini, and Roberto Torroba, "Pure optical dynamical color encryption," Opt. Express 19, 13779-13786 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-15-13779


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References

  1. F. Mosso, J. F. Barrera, M. Tebaldi, N. Bolognini, and R. Torroba, “All-optical encrypted movie,” Opt. Express 19(6), 5706–5712 (2011). [PubMed]
  2. P. Refregier and B. Javidi, “Optical image encryption based on input plane and Fourier plane random encoding,” Opt. Lett. 20(7), 767–769 (1995). [CrossRef] [PubMed]
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  12. M. Tebaldi, S. Horrillo, E. E. Pérez-Cabré, M. S. Millán, D. Amaya, R. Torroba, and N. Bolognini, “Experimental color encryption in a joint transform correlator architecture,” J. Phys.: Conf. Ser. 274, 012054 (2011). [CrossRef]
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