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Proceedings Paper

Optical coding for storing confidential data
Author(s): Qizhong Huang; Jinglei Du; Yongkang Guo; Ding Wang
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Paper Abstract

Two cryptographic methods for storing graphic information are presented in this paper. The information is encoded by phase modulation or the angular coding. The information are read out by means of holographic interference. Without decoding card, no one can read out the information stored in the informational card.

Paper Details

Date Published: 24 October 1997
PDF: 5 pages
Proc. SPIE 3159, Algorithms, Devices, and Systems for Optical Information Processing, (24 October 1997); doi: 10.1117/12.279452
Show Author Affiliations
Qizhong Huang, Sichuan Univ. (China)
Jinglei Du, Sichuan Univ. (China)
Yongkang Guo, Sichuan Univ. (China)
Ding Wang, ChongQing Univ. (China)


Published in SPIE Proceedings Vol. 3159:
Algorithms, Devices, and Systems for Optical Information Processing
Bahram Javidi; Demetri Psaltis, Editor(s)

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