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Proceedings Paper

A new image crypto-system
Author(s): Yi C. Chang; Hsuan T. Chang; Chung J. Kuo
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Paper Abstract

Dyadic displacements of an image can be regarded as a special type of permutations of pixel addresses. This property can be used to encrypt an image without information loss, damage, or addition. In this paper, a new optical image encryption technique based on dyadic permutations and holographic interference is proposed. First, we adopt holographic interference to record both the phase and amplitude of the Fourier transform of an input image as the intensity information. Then the recorded phase is processed through dyadic permutations based on exclusive-OR (XOR) operations. The original image can be successfully recovered by using the inverse procedure.

Paper Details

Date Published: 23 October 2003
PDF: 12 pages
Proc. SPIE 5202, Optical Information Systems, (23 October 2003); doi: 10.1117/12.501309
Show Author Affiliations
Yi C. Chang, Wu-Feng Institute of Technology (Taiwan)
National Chung Cheng Univ. (Taiwan)
Hsuan T. Chang, Wu-Feng Institute of Technology (Taiwan)
National Yunlin Univ. of Science and Technology (Taiwan)
Chung J. Kuo, Wu-Feng Institute of Technology (Taiwan)

Published in SPIE Proceedings Vol. 5202:
Optical Information Systems
Bahram Javidi; Demetri Psaltis, Editor(s)

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