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Recent Patents on Signal Processing
ISSN (Print): 2210-6863
ISSN (Online): 1877-6124
VOLUME: 2
ISSUE: 1
DOI: 10.2174/2210686311202010023









Challenges for Practical Optical Information Security Systems

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Author(s): Guohai Situ
Pages 23-32 (10)
Abstract:
Optical systems as information processing systems have become quite impressive recently in optical image encryption and watermarking. Benefits of optical systems over the electronic counterparts are that optical processing provides the maximum number of degrees of freedom, and that optical encryption is ideal for information stored in holographic media. Various schemes have been proposed in the last decade. In this article, we review the recent progress and patents in this field, and point out some challenges that might lead to practical optical information security systems
Keywords:
Double random phase encoding, holography, information security, Optical encryption, phase retrieval, Optical systems, multidimensional information s, spatial coherence, polarization, Optical image encryption, cryptosystem, discrete fractional fourier transform, encoding technique, micro-optics system, decryption method
Affiliation:
Department of Electrical Engineering, Princeton University, Princeton, NJ 08544, USA.