Monaghan, David S. and Gopinathan, Unnikrishnan and Situ, Guohai and Naughton, Thomas J. and Sheridan, John T. (2008) Cost Function Statistical Analysis in Double Random Phase Encoding. Proceedings of SPIE, 7072. 70720Z-1-70720Z-8. ISSN 0277-786X

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Abstract

We examine the Amplitude-Encoding (AE) case of the Double Random Phase Encoding (DRPE) technique. A cost function is the function we use to evaluate an attempted decryption with our original input image. For systems with a relatively small key-space we can evaluate the output of every key to get an overall idea of the spread of these keys in key-space. However for larger systems this is not practical. Based on a normalised root mean squared cost function we wish to identify expressions for the mean and variance of the output (decrypted) intensity for a sample set of keys in a large system (256x256 pixels).

Item Type:	Article
Additional Information:	Cite as: David S. Monaghan ; Unnikrishnan Gopinathan ; Guohai Situ ; Thomas J. Naughton and John T. Sheridan "Cost function statistical analysis in double random phase encoding", Proc. SPIE 7072, Optics and Photonics for Information Processing II, 70720Z (September 03, 2008); doi:10.1117/12.798202; http://dx.doi.org/10.1117
Keywords:	Optical processing; Digital image processing; Fourier optics; Numerical approximation and analysis;
Academic Unit:	Faculty of Science and Engineering > Computer Science
Item ID:	8452
Identification Number:	https://doi.org/10.1117/12.798202
Depositing User:	Thomas Naughton
Date Deposited:	12 Jul 2017 15:54
Journal or Publication Title:	Proceedings of SPIE
Publisher:	SPIE
Refereed:	Yes
Funders:	Enterprise Ireland, Science Foundation Ireland, Irish Research Council for Science Engineering and Technology (IRCSET), International Society for Optical Engineering SPIE
URI:	http://proceedings.spiedigitallibrary.or...
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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