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Optical Engineering

Hybrid optical encryption of a 3-D object using a digital holographic technique
Author(s): Takanori Nomura; Kaoru Uota; Yoshiharu Morimoto
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Paper Abstract

An encryption method of a 3-D object based on the phase modulation of an object wave is proposed. The phase of the object wave is modulated by a virtual optical random phase mask using a digital holographic technique. The keys of an encryption step are both a phase distribution and a position of the virtual optical phase mask. If either of them is not correct, we cannot decrypt the 3-D object. Owing to a characteristic of a hologram, we can see some parallax of a reconstructed 3-D object. Experimental results are presented to confirm the proposed method.

Paper Details

Date Published: 1 October 2004
PDF: 5 pages
Opt. Eng. 43(10) doi: 10.1117/1.1789991
Published in: Optical Engineering Volume 43, Issue 10
Show Author Affiliations
Takanori Nomura, Wakayama Univ. (Japan)
Kaoru Uota, Wakayama Univ. (Japan)
Yoshiharu Morimoto, Wakayama Univ. (Japan)

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