Monaghan, David S. and Situ, Guohai and Gopinathan, Unnikrishnan and Naughton, Thomas J. and Sheridan, John T. (2008) Role of phase key in the double random phase encoding technique: an error analysis. Applied Optics, 47 (21). pp. 3808-3816. ISSN 0003-6935

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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.

Item Type:	Article
Keywords:	phase key; double random phase encoding technique; error analysis;
Academic Unit:	Faculty of Science and Engineering > Computer Science
Item ID:	8632
Identification Number:	https://doi.org/10.1364/AO.47.003808
Depositing User:	Thomas Naughton
Date Deposited:	17 Aug 2017 15:33
Journal or Publication Title:	Applied Optics
Publisher:	Optical Society of America
Refereed:	Yes
Funders:	Enterprise Ireland, Science Foundation Ireland, Irish Research Council for Science Engineering and Technology (IRCSET), International Society for Optical Engineering (SPIE)
URI:	https://www.osapublishing.org/
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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