Peer-Reviewed Journal Details
Mandatory Fields
Hennelly, BM;Naughton, TJ;McDonald, J;Sheridan, JT;Unnikrishnan, G;Kelly, DP;Javidi, B
2007
May
Optics Letters
Spread-space spread-spectrum technique for secure multiplexing
Published
44 ()
Optional Fields
OPTICAL-IMAGE ENCRYPTION STORAGE MEMORY SYSTEMS
32
1060
1062
A novel technique for 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 the 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 by using the particular key associated with. it. During decryption the energy from the other images is further spread, making it possible to minimize its effects by using suitable filters. Wigner analysis is applied to the technique, and numerical results are presented. (c) 2007 Optical Society of America.
WASHINGTON
0146-9592
Grant Details