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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 24 — Nov. 26, 2007
  • pp: 16067–16079

Double image encryption based on random phase encoding in the fractional Fourier domain

Ran Tao, Yi Xin, and Yue Wang  »View Author Affiliations


Optics Express, Vol. 15, Issue 24, pp. 16067-16079 (2007)
http://dx.doi.org/10.1364/OE.15.016067


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Abstract

A novel image encryption method is proposed by utilizing random phase encoding in the fractional Fourier domain to encrypt two images into one encrypted image with stationary white distribution. By applying the correct keys which consist of the fractional orders, the random phase masks and the pixel scrambling operator, the two primary images can be recovered without cross-talk. The decryption process is robust against the loss of data. The phase-based image with a larger key space is more sensitive to keys and disturbances than the amplitude-based image. The pixel scrambling operation improves the quality of the decrypted image when noise perturbation occurs. The novel approach is verified by simulations.

© 2007 Optical Society of America

OCIS Codes
(070.4560) Fourier optics and signal processing : Data processing by optical means
(090.0090) Holography : Holography
(100.2000) Image processing : Digital image processing

ToC Category:
Image Processing

History
Original Manuscript: August 27, 2007
Revised Manuscript: October 31, 2007
Manuscript Accepted: November 8, 2007
Published: November 20, 2007

Citation
Ran Tao, Yi Xin, and Yue Wang, "Double image encryption based on random phase encoding in the fractional Fourier domain," Opt. Express 15, 16067-16079 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-24-16067


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