Image Processing

Design of input phase mask for the space bandwidth of the optical encryption system

[+] Author Affiliations
Takanori Nomura

Wakayama University, Department of Opto-Mechatronics, 930 Sakaedani, Wakayama 640-8510, Japan

Eiji Nitanai

Wakayama University, Department of Opto-Mechatronics, 930 Sakaedani, Wakayama 640-8510, Japan

Takuhisa Numata

Wakayama University, Department of Opto-Mechatronics, 930 Sakaedani, Wakayama 640-8510, Japan

Bahram Javidi

University of Connecticut, Electrical and Computer Engineering Department, 371 Fairfield Road, Unit 1157, Storrs, Connecticut 06269-1157

Opt. Eng. 45(1), 017006 (January 10, 2006). doi:10.1117/1.2158409
History: Received February 17, 2005; Revised May 31, 2005; Accepted June 04, 2005; Published January 10, 2006
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A method to design an input phase mask for double-random phase-encoding optical encryption is proposed. The input phase mask is iteratively designed so that the extent of the Fourier spectrum of the product of an input image and the input phase mask correspond to the space bandwidth of the optical system. By using the designed input phase mask, we show that the bit-error rate is improved. We also discuss the number of phase levels of the designed input phase mask.

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© 2006 Society of Photo-Optical Instrumentation Engineers

Citation

Takanori Nomura ; Eiji Nitanai ; Takuhisa Numata and Bahram Javidi
"Design of input phase mask for the space bandwidth of the optical encryption system", Opt. Eng. 45(1), 017006 (January 10, 2006). ; http://dx.doi.org/10.1117/1.2158409


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