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Proceedings Paper

Three-dimensional image security
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Paper Abstract

In this work we describe a method for optoelectronic encryption of 3D images based in digital holography. Phase-shift digital holography is used to record the complex ampli-tude distribution of the Fresnel diffraction patterns generated by a 3D object illuminated with coherent light. First, we review a technique to encrypt optically the information contained in a 2D object by using digital holography. The method is then extended to encrypt 3D information. In both cases encryption is performed by using random phase codes as key functions. Decryption can be carried out optical or digitally. We also show that, after decryption, 3D objects can be reconstructed digitally with different perspec-tives by performing simple operations on the decrypted hologram. Experimental results are presented.

Paper Details

Date Published: 28 February 2001
PDF: 14 pages
Proc. SPIE 10298, Three-Dimensional Video and Display: Devices and Systems: A Critical Review, 102980G (28 February 2001); doi: 10.1117/12.419787
Show Author Affiliations
Enrique Tajahuerce, Univ. Jaume I (Spain)
Bahram Javidi, Univ. of Connecticut (United States)

Published in SPIE Proceedings Vol. 10298:
Three-Dimensional Video and Display: Devices and Systems: A Critical Review
Bahram Javidi; Fumio Okano, Editor(s)

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