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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 6 — Feb. 20, 2012
  • pp: 686–691

Optical image hiding with silhouette removal based on the optical interference principle

Xiaogang Wang and Daomu Zhao  »View Author Affiliations

Applied Optics, Vol. 51, Issue 6, pp. 686-691 (2012)

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The earlier proposed interference-based encryption method with two phase-only masks (POMs), which actually is a special case of our method, is quite simple and does not need iterative encoding. However, it has been found recently that the encryption method has security problems and cannot be directly applied to image encryption due to the inherent silhouette problem. Several methods based on chaotic encryption algorithms have been proposed to remove the problem by postprocessing of the POMs, which increased the computation time or led to digital inverse computation in decryption. Here we propose a new method for image encryption based on optical interference and analytical algorithm that can be directly used for image encryption. The information of the target image is hidden into three POMs, and the silhouette problem that exists in the method with two POMs can be resolved during the generation procedure of POMs based on the interference principle. Simulation results are presented to verify the validity of the proposed approach.

© 2012 Optical Society of America

OCIS Codes
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(100.0100) Image processing : Image processing
(100.4998) Image processing : Pattern recognition, optical security and encryption

ToC Category:
Fourier Optics and Signal Processing

Original Manuscript: October 5, 2011
Revised Manuscript: November 9, 2011
Manuscript Accepted: November 10, 2011
Published: February 13, 2012

Xiaogang Wang and Daomu Zhao, "Optical image hiding with silhouette removal based on the optical interference principle," Appl. Opt. 51, 686-691 (2012)

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