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Optical Engineering

Compression of encrypted three-dimensional objects using digital holography
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Paper Abstract

We present the results of applying data compression techniques to encrypted three-dimensional objects. The objects are captured using phase-shift digital holography and encrypted using a random phase mask in the Fresnel domain. Lossy quantization is combined with lossless coding techniques to quantify compression ratios. Lossless compression alone applied to the encrypted holographic data achieves compression ratios lower than 1.05. When combined with quantization and an integer encoding scheme, this rises to between 12 and 65 (depending on the hologram chosen and the method of measuring compression ratio), with good decryption and reconstruction quality. Our techniques are suitable for a range of secure three-dimensional object storage and transmission applications.

Paper Details

Date Published: 1 October 2004
PDF: 6 pages
Opt. Eng. 43(10) doi: 10.1117/1.1783280
Published in: Optical Engineering Volume 43, Issue 10
Show Author Affiliations
Thomas J. Naughton, National Univ. of Ireland/Maynooth (Ireland)
Bahram Javidi, Univ. of Connecticut (United States)


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