Conference Publication Details
Mandatory Fields
Monaghan D.;Gopinathan U.;Situ G.;Naughton T.;Sheridan J.
Proceedings of SPIE - The International Society for Optical Engineering
Cost function statistical analysis in double random phase encoding
2008
November
Published
1
0 ()
Optional Fields
Digital image processing Fourier optics Numerical approximation and analysis Optical processing
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).
10.1117/12.798202
Grant Details