All-optical encrypted movie

All-optical encrypted movie

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

Optics Express, Vol. 19, Issue 6, pp. 5706-5712 (2011)

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Abstract

We introduce for the first time the concept of an all-optical encrypted movie. This movie joints several encrypted frames corresponding to a time evolving situation employing the same encoding mask. Thanks to a multiplexing operation we compact the encrypted movie information into a single package. But the decryption of this single package implies the existence of cross-talk if we do not adequately pre-process the encoded information before multiplexing. In this regard, we introduce a grating modulation to each encoded image, and then we proceed to multiplexing. After appropriate filtering and synchronizing procedures applied to the multiplexing, we are able to decrypt and to reproduce the movie. This movie is only properly decoded when in possession of the right decoding key. The concept development is carried-out in virtual optical systems, both for the encrypting and the filtering-decrypting stages. Experimental results are shown to confirm our approach.

OCIS Codes
(030.6140) Coherence and statistical optics : Speckle
(070.4560) Fourier optics and signal processing : Data processing by optical means
(200.4740) Optics in computing : Optical processing
(060.4785) Fiber optics and optical communications : Optical security and encryption

ToC Category:
Image Processing

History
Original Manuscript: January 3, 2011
Revised Manuscript: March 3, 2011
Manuscript Accepted: March 5, 2011
Published: March 11, 2011

Virtual Issues
March 18, 2011 Spotlight on Optics

Citation
Fabian Mosso, John Fredy Barrera, Myrian Tebaldi, Néstor Bolognini, and Roberto Torroba, "All-optical encrypted movie," Opt. Express 19, 5706-5712 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-6-5706

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References

G. Situ and J. Zhang, “Multiple-image encryption by wavelength multiplexing,” Opt. Lett. 30(11), 1306–1308 (2005). [CrossRef] [PubMed]
J. F. Barrera, R. Henao, M. Tebaldi, R. Torroba, and N. Bolognini, “Multiplexing encryption-decryption via lateral shifting of a random phase mask,” Opt. Commun. 259(2), 532–536 (2006). [CrossRef]
J. F. Barrera, R. Henao, M. Tebaldi, R. Torroba, and N. Bolognini, “Multiplexing encrypted data by using polarized light,” Opt. Commun. 260(1), 109–112 (2006). [CrossRef]
J. F. Barrera, R. Henao, M. Tebaldi, R. Torroba, and N. Bolognini, “Multiple image encryption using an aperture modulated optical system,” Opt. Commun. 261(1), 29–33 (2006). [CrossRef]
J. F. Barrera, R. Henao, M. Tebaldi, R. Torroba, and N. Bolognini, “Code retrieval via undercover multiplexing,” Optik (Jena) 119, 139–142 (2008).
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]
J. Ojeda-Castañeda and E. E. Sicre, “Theta-modulation decoder based on the Lau effect,” Opt. Commun. 59(2), 87–91 (1986). [CrossRef]
J. W. Goodman, Introduction to Fourier Optics (Roberts & Company Publishers, 2004), pp. 80–81.

Barrera, J. F.
Bolognini, N.
Henao, R.
Javidi, B.
Ojeda-Castañeda, J.
Refregier, P.
Sicre, E. E.
Situ, G.
Tebaldi, M.
Torroba, R.
Zhang, J.

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