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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 23 — Nov. 7, 2011
  • pp: 22619–22627

Optically-induced-potential-based image encryption

Bing-Chu Chen and He-Zhou Wang  »View Author Affiliations

Optics Express, Vol. 19, Issue 23, pp. 22619-22627 (2011)

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We present a technique of nonlinear image encryption by use of virtual optics. The image to be encrypted is superposed on a random intensity image. And this superposed image propagates through a nonlinear medium and a 4-f system with single phase key. The image is encrypted to a stationary white noise. The decryption process is sensitive to the parameters of the encryption system and the phase key in 4-f system. This sensitivity makes attackers hard to access the phase key. In nonlinear medium, optically-induced potentials, which depend on intensity of optical wave, make the superposition principle frustrated. This nonlinearity based on optically induced potentials highly improves the secrecy level of image encryption. Resistance against attacks based on the phase retrieval technique proves that it has the high secrecy level. This nonlinear image encryption based on optically induced potentials is proposed and demonstrated for the first time.

© 2011 OSA

OCIS Codes
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(070.4340) Fourier optics and signal processing : Nonlinear optical signal processing
(100.0100) Image processing : Image processing

ToC Category:
Image Processing

Original Manuscript: July 26, 2011
Revised Manuscript: October 4, 2011
Manuscript Accepted: October 10, 2011
Published: October 25, 2011

Bing-Chu Chen and He-Zhou Wang, "Optically-induced-potential-based image encryption," Opt. Express 19, 22619-22627 (2011)

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