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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 10 — May. 15, 2006
  • pp: 1414–1416

Two-step phase-shifting interferometry and its application in image encryption

X. F. Meng, L. Z. Cai, X. F. Xu, X. L. Yang, X. X. Shen, G. Y. Dong, and Y. R. Wang  »View Author Affiliations

Optics Letters, Vol. 31, Issue 10, pp. 1414-1416 (2006)

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Conventional phase-shifting interferometry (PSI) needs at least three interferograms. A novel algorithm of two-step PSI, with an arbitrary known phase step, by which a complex object field can be reconstructed with only two interferograms is proposed. This algorithm is then applied to an information security system based on double random-phase encoding in the Fresnel domain. The feasibility of this method and its robustness against occlusion and additional noise attacks are verified by computer simulations. This approach can considerably improve the efficiency of data transmission and is very suitable for Internet use.

© 2006 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(090.2880) Holography : Holographic interferometry
(100.2000) Image processing : Digital image processing
(100.3010) Image processing : Image reconstruction techniques

ToC Category:
Image Processing

Original Manuscript: January 10, 2006
Manuscript Accepted: February 10, 2006

X. F. Meng, L. Z. Cai, X. F. Xu, X. L. Yang, X. X. Shen, G. Y. Dong, and Y. R. Wang, "Two-step phase-shifting interferometry and its application in image encryption," Opt. Lett. 31, 1414-1416 (2006)

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