Naughton, Thomas J. and Tajahuerce, Enrique and McDonald, John and Javidi, Bahram
Three-dimensional image sensing, encryption, compression,
and transmission using digital holography.
SPIE Proceedings, 5611.
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.
||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.
||three-dimensional image processing; digital holography; optical image encryption; image compression; optical information processing;
||Faculty of Science and Engineering > Computer Science
||08 Sep 2006
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