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Optical Engineering

Practical image encryption scheme by real-valued data
Author(s): Hoon-Gee Yang; Eun-Soo Kim
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Paper Abstract

An image encryption and corresponding decoding method applicable to security verification are presented. This method exploits a holographic process in that an encoded image can be regarded as a hologram pattern resulting from interferences between two waves transmitted through a primary identification image and a reference image serving as an encryption key. We show that the proposed method produces a real-valued encoded image, which facilitates card manufacturing. Moreover, due to the fact that data to be used as the encryption key are real, the decoding system is also easily realized with an amplitude type SLM. The proposed method is justified with various simulation results obtained with data of real-positive or phase-only type for encoded image and encryption key.

Paper Details

Date Published: 1 September 1996
PDF: 6 pages
Opt. Eng. 35(9) doi: 10.1117/1.600851
Published in: Optical Engineering Volume 35, Issue 9
Show Author Affiliations
Hoon-Gee Yang, Kwangwoon Univ. (South Korea)
Eun-Soo Kim, Kwangwoon Univ. (South Korea)

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