Role of phase key in the double random phase encoding technique : an error analysis

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Title: Role of phase key in the double random phase encoding technique : an error analysis
Authors: Monaghan, David S.
Situ, Guohai
Gopinathan, Unnikrishnan
Naughton, Thomas J.
Sheridan, John T.
Permanent link: http://hdl.handle.net/10197/3391
Date: 20-Jul-2008
Abstract: We perform a numerical analysis of the double random phase encryption–decryption technique to determine how, in the case of both amplitude and phase encoding, the two decryption keys (the image- and Fourier-plane keys) affect the output gray-scale image when they are in error. We perform perfect encryption and imperfect decryption. We introduce errors into the decrypting keys that correspond to the use of random distributions of incorrect pixel values. We quantify the effects that increasing amounts of error in the image-plane key, the Fourier-plane key, and both keys simultaneously have on the decrypted image. Quantization effects are also examined
Funding Details: Science Foundation Ireland
Irish Research Council for Science, Engineering and Technology
Type of material: Journal Article
Publisher: Optical Society of America
Copyright (published version): 2008 Optical Society of America
Subject LCSH: Numerical analysis
Data encryption (Computer science)
Optical data processing
Fourier transform optics
DOI: 10.1364/AO.47.003808
Language: en
Status of Item: Not peer reviewed
Appears in Collections:Electrical and Electronic Engineering Research Collection

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