1 October 2004 Compression of encrypted three-dimensional objects using digital holography
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Optical Engineering, 43(10), (2004). doi:10.1117/1.1783280
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.
Thomas J. Naughton, Bahram Javidi, "Compression of encrypted three-dimensional objects using digital holography," Optical Engineering 43(10), (1 October 2004). http://dx.doi.org/10.1117/1.1783280
JOURNAL ARTICLE
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KEYWORDS
Digital holography

Holograms

Quantization

Image compression

Data compression

Holography

3D image processing

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