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Proceedings Paper

Fractional Fourier transform-based optical encryption with treble random phase-encoding
Author(s): Yi Xin; Ran Tao; Yue Wang
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Paper Abstract

We propose a new architecture of optical encryption technique using the fractional Fourier transform with three statistically independent random phase masks. Compared with the existing double-phase encoding method in the fractional Fourier-domain, the proposed extra phase mask in the last fractional Fourier domain makes the architecture symmetrical, and additive processing to the encrypted image can be turned into complex stationary white noise after decryption, and enlarge the key space without any degradation of its robustness to blind decryption. This property can be utilized to improve the quality of the recover image. Simulation results have verified the validity.

Paper Details

Date Published: 19 February 2008
PDF: 9 pages
Proc. SPIE 6625, International Symposium on Photoelectronic Detection and Imaging 2007: Related Technologies and Applications, 662518 (19 February 2008); doi: 10.1117/12.791204
Show Author Affiliations
Yi Xin, Beijing Institute of Technology (China)
Ran Tao, Beijing Institute of Technology (China)
Yue Wang, Beijing Institute of Technology (China)


Published in SPIE Proceedings Vol. 6625:
International Symposium on Photoelectronic Detection and Imaging 2007: Related Technologies and Applications

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