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Monaghan, David S., Gopinathan, Unnikrishnan, Situ, Guohai, 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: | 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 |
| Related URLs: | |
| URI: | https://mural.maynoothuniversity.ie/id/eprint/8452 |
| 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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