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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Editor: Franco Gori
  • Vol. 28, Iss. 7 — Jul. 1, 2011
  • pp: 1453–1461

Lensless optical data embedding system using concealogram and cascaded digital Fresnel hologram

Hone-Ene Hwang, Hsuan T. Chang, and Wen-Nung Lie  »View Author Affiliations

JOSA A, Vol. 28, Issue 7, pp. 1453-1461 (2011)

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A robust lensless optical data embedding system using both the computer-generated concealogram and the digital Fresnel hologram (DFH) is proposed. The concealogram and the DFH are cascaded as the input and filter planes, respectively. When the concealogram is illuminated by a plane wave, the hidden data can be extracted at the output plane without using any lenses. The longitudinal positions of the filter and the output planes, as well as the wavelength, can be used as the secret keys to enhance system security. Furthermore, the robustness of the proposed system against noise and distortion is also demonstrated.

© 2011 Optical Society of America

OCIS Codes
(100.3010) Image processing : Image reconstruction techniques
(100.5070) Image processing : Phase retrieval
(060.4785) Fiber optics and optical communications : Optical security and encryption

ToC Category:
Image Processing

Original Manuscript: September 14, 2010
Revised Manuscript: March 26, 2011
Manuscript Accepted: May 14, 2011
Published: June 21, 2011

Hone-Ene Hwang, Hsuan T. Chang, and Wen-Nung Lie, "Lensless optical data embedding system using concealogram and cascaded digital Fresnel hologram," J. Opt. Soc. Am. A 28, 1453-1461 (2011)

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