Three-dimensional image sensing, encryption, compression, and transmission using digital holography


Naughton, Thomas J. and Tajahuerce, Enrique and McDonald, John and Javidi, Bahram (2004) Three-dimensional image sensing, encryption, compression, and transmission using digital holography. SPIE Proceedings, 5611. pp. 24-32.

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Abstract

We present the results of applying data compression techniques to encrypted three-dimensional (3D) objects. The objects are captured using phase-shift digital holography and encrypted using a random phase mask in the Fresnel domain. Both the amplitude and the phase of our 3D objects are encrypted using this technique. The advantage of a digital representation of the optical wavefronts is that they can be processed and transmitted using conventional means. Arbitrary views of the 3D objects are decrypted and reconstructed using digital propagation. Compression is applied to the encrypted digital holograms prior to transmission. Degradation due to lossy quantization compression is measured in the reconstruction domain. Finally, we use a speedup metric to validate that our compression techniques are viable for time-critical 3D imaging applications. Our techniques are suitable for a range of secure 3D object storage and transmission applications.

Item Type: Article
Additional Information: Copyright 2004 Society of Photo-Optical Instrumentation Engineers. This paper was published in [add journal or proceedings bibliographic information] and is made available as an electronic reprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Keywords: three-dimensional image processing; digital holography; optical image encryption; image compression; optical information processing;
Academic Unit: Faculty of Science and Engineering > Computer Science
Item ID: 398
Identification Number: 10.1117/12.580685
Depositing User: Thomas Naughton
Date Deposited: 08 Sep 2006
Journal or Publication Title: SPIE Proceedings
Publisher: SPIE Press
Refereed: Yes
URI:

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