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Proceedings Paper

Optical security based on three-dimensional phase object
Author(s): O. Matoba; T. Sawasaki; K. Nitta; T. Yoshimura
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Paper Abstract

An optical identification system based a three-dimensional (3D) phase object is presented. The identification is implemented by the correlation between a speckle pattern of the 3D phase object and stored speckle patterns. To achieve a high level of recognition, we use two speckle patterns of the 3D object obtained by illuminating two wavelengths. Experimental and numerical results are presented to show the effectiveness of the proposed system.

Paper Details

Date Published: 30 August 2006
PDF: 8 pages
Proc. SPIE 6311, Optical Information Systems IV, 63110O (30 August 2006); doi: 10.1117/12.680145
Show Author Affiliations
O. Matoba, Kobe Univ. (Japan)
T. Sawasaki, Kobe Univ. (Japan)
K. Nitta, Kobe Univ. (Japan)
T. Yoshimura, Kobe Univ. (Japan)


Published in SPIE Proceedings Vol. 6311:
Optical Information Systems IV
Bahram Javidi; Demetri Psaltis; H. John Caulfield, Editor(s)

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