Fractional Fourier transform-based optical encryption with treble random phase-encoding

Yi Xin; Ran Tao; Yue Wang

doi:10.1117/12.791204

19 February 2008 Fractional Fourier transform-based optical encryption with treble random phase-encoding

Yi Xin, Ran Tao, Yue Wang

Proceedings Volume 6625, International Symposium on Photoelectronic Detection and Imaging 2007: Related Technologies and Applications; 662518 (2008) https://doi.org/10.1117/12.791204
Event: International Symposium on Photoelectronic Detection and Imaging: Technology and Applications 2007, 2007, Beijing, China

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.

Citation Download Citation

Yi Xin, Ran Tao, and Yue Wang "Fractional Fourier transform-based optical encryption with treble random phase-encoding", Proc. SPIE 6625, International Symposium on Photoelectronic Detection and Imaging 2007: Related Technologies and Applications, 662518 (19 February 2008); https://doi.org/10.1117/12.791204

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