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Proceedings Paper

Visual cryptography based on optical interference encryption technique
Author(s): Dong-Hoan Seo; Jong-Yun Kim; Sang-Su Lee; Se-Joon Park; Woong Ho Cho; Soo-Joong Kim
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Paper Abstract

In this paper, we proposed a new visual cryptography scheme based on optical interference that can improve the contrast and signal to noise ratio of reconstructed images when compared to conventional visual cryptography methods. The binary image being encrypted is divided into any number of n slides. For encryption, randomly independent keys are generated along with another random key based on a XOR process of random keys. The XOR process between each divided image and each random key produces the encryption of n encrypted images. These encrypted images are then used to make encrypted binary phase masks. For decryption, the phase masks are placed on the paths of a Mach-Zehnder interferometer.

Paper Details

Date Published: 26 July 2001
PDF: 9 pages
Proc. SPIE 4386, Photonic and Quantum Technologies for Aerospace Applications III, (26 July 2001); doi: 10.1117/12.434217
Show Author Affiliations
Dong-Hoan Seo, Kyungpook National Univ. (South Korea)
Jong-Yun Kim, Kyungdong Univ. (South Korea)
Sang-Su Lee, Electronics and Telecommunications Research Institute (South Korea)
Se-Joon Park, Kyungpook National Univ. (South Korea)
Woong Ho Cho, Taegu Technical College (South Korea)
Soo-Joong Kim, Kyungpook National Univ. (South Korea)

Published in SPIE Proceedings Vol. 4386:
Photonic and Quantum Technologies for Aerospace Applications III
Andrew R. Pirich; Eric Donkor; Eric Donkor; Andrew R. Pirich; Edward W. Taylor, Editor(s)

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