Peer-Reviewed Journal Details
Mandatory Fields
Liu, S;Hennelly, BM;Sheridan, JT
2012
December
Optical Engineering
Numerical simulation of double random phase encoding
Published
7 ()
Optional Fields
OPTICAL-IMAGE ENCRYPTION FRACTIONAL FOURIER-TRANSFORM FRESNEL DOMAIN PLAINTEXT ATTACK PLANE ENCRYPTION SECURITY INFORMATION ALGORITHM MEMORY KEY
51
In this paper, we propose a method for the numerical simulation of optical double random phase encoding (DRPE). This method is based on a discrete model of the DRPE system that retains the properties of its optical counterpart and takes into account the capacity of DRPE to spread a signal's energy in both the space and the spatial frequency domains. Discrete versions of two narrowband lossless diffusers are created to simulate their analogue optical counterparts and their bandwidths control how much the energy of the input signal is spread in both the space and spatial frequency domains as it passes through the system. The limiting case, when complete aliasing (maximum overlap) takes place, is also discussed in relation to our method. In this case, we show our method reduces to a purely numerical encryption procedure which can, nonetheless, be decrypted perfectly. Simulation results are presented to demonstrate the feasibility of the proposed technique. (C) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.OE.51.12.128201]
BELLINGHAM
0091-3286
10.1117/1.OE.51.12.128201
Grant Details