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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 1 — Jan. 1, 2013
  • pp: A26–A32

Intensity image-embedded binary holograms

Peter Wai Ming Tsang, Ting-Chung Poon, and Wai Keung Cheung  »View Author Affiliations


Applied Optics, Vol. 52, Issue 1, pp. A26-A32 (2013)
http://dx.doi.org/10.1364/AO.52.000A26


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Abstract

Past research has demonstrated that, by downsampling the source object scene in multiple directions, a binary Fresnel hologram can be generated to preserve favorable quality on the reconstructed image. In this paper, we will show that a binary hologram generated with such an approach is also insensitive to noise contamination. On this basis, we propose a method to embed an intensity image into the binary hologram. To prevent the embedded information from being tampered or retrieved with unauthorized means, scrambling is applied to relocate each pixel to a unique position in the binary hologram according to a random assignment that is only known with the availability of a descrambling key. Experimental results demonstrate that our proposed method is capable of embedding an intensity image that is one quarter the size of the binary hologram without causing observable degradation on the reconstructed image. In addition, the embedded image can be retrieved with acceptable quality even if the binary hologram is damaged and contaminated with noise.

© 2013 Optical Society of America

OCIS Codes
(090.0090) Holography : Holography
(090.1760) Holography : Computer holography
(090.1995) Holography : Digital holography

History
Original Manuscript: July 20, 2012
Revised Manuscript: September 12, 2012
Manuscript Accepted: September 12, 2012
Published: October 11, 2012

Citation
Peter Wai Ming Tsang, Ting-Chung Poon, and Wai Keung Cheung, "Intensity image-embedded binary holograms," Appl. Opt. 52, A26-A32 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-1-A26


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