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Proceedings Paper

Binary phase-based optical encryption system using interferometer
Author(s): Dong-Hoan Seo; Chang-Mok Shin; Jong-Yun Kim; Chul-Soo Kim; Jeong-Woo Kim; Soo-Joong Kim
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Paper Abstract

In this paper, we propose a new image encryption and decryption system using a phase-modulated random key and the principle of interference. This optical system makes an encrypted image by the multiplication of a random phase key and a phase-modulated image. The random key and an image consist of only binary values. Thereafter a phase value of every pixel of the encrypted image is 0 or pi. The reconstructed pattern of the original image is simply performed by interfering between reference wave and a direct pixel to pixel mapping image of the encrypted image with the same random phase key. In optical experiment, both computer simulation and optical experiment show a good performance of the proposed optical method as encryption scheme.

Paper Details

Date Published: 6 March 2002
PDF: 8 pages
Proc. SPIE 4734, Optical Pattern Recognition XIII, (6 March 2002); doi: 10.1117/12.458402
Show Author Affiliations
Dong-Hoan Seo, Kyungpook National Univ. (South Korea)
Chang-Mok Shin, Kyungpook National Univ. (South Korea)
Jong-Yun Kim, Kyungdong Univ. (South Korea)
Chul-Soo Kim, Kyongju Univ. (South Korea)
Jeong-Woo Kim, Dongyang Univ. (South Korea)
Soo-Joong Kim, Kyungpook National Univ. (South Korea)


Published in SPIE Proceedings Vol. 4734:
Optical Pattern Recognition XIII
David P. Casasent; Tien-Hsin Chao, Editor(s)

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