Conference Publication Details
Mandatory Fields
Hennelly, BM;McDonald, JB;Sheridan, JT;Goplnathan, U;Kelly, DP;Javidi, B;Naughton, TJ
6TH INTERNATIONAL WORKSHOP ON INFORMATION OPTICS (WIO '07)
Spread space spread spectrum technique for secure multiplexing
2007
January
Published
1
1 ()
Optional Fields
OPTICAL-IMAGE ENCRYPTION STORAGE MEMORY SYSTEMS
138
144
A novel technique of multiplexing complex images is proposed in which each image may be demultiplexed only if a set of random encryption keys is known. The technique utilizes the ability of the double random phase encoding method to spread a signals' energy in both the space and spatial frequency domains in a controlled manner. To multiplex, images are independently encrypted with different phase keys, and then superimposed by recording sequentially on the same material. Each image is extracted using the particular key associated with it. During decryption the energy from the other images is further spread making it possible to minimize their effects using suitable filters. Wigner analysis is applied to the technique, and numerical results, supporting the results, are presented.
Grant Details