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http://dx.doi.org/10.3807/KJOP.2002.13.1.079

Optical image encryption by use of double random phase mask and analysis of its encryption level  

김병철 (강원대학교 물리학과)
차성도 (강원대학교 물리학과)
신승호 (강원대학교 물리학과)
Publication Information
Korean Journal of Optics and Photonics / v.13, no.1, 2002 , pp. 79-83 More about this Journal
Abstract
We present a method to improve encryption level by use of a rotational term in the double random-phase-mask(RPM) encryption system. Encrypted optical images are recorded in a photorefractive LiNbO$_3$:Fe crystal and reconstructed by using a phase conjugated reading beam. The encryption level for the analog image is analyzed by use of visibility function.
Keywords
optical information processing(IP.010);
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