Optical Image Addition and Encryption by Multi-Exposure Based on Fractional Fourier Transform Hologram

Chin. Phys. Lett.

2006, Vol. 23

Issue (3): 603-606 DOI:

Original Articles

Optical Image Addition and Encryption by Multi-Exposure Based on Fractional Fourier Transform Hologram

CHEN Lin-Fei;ZHAO Dao-Mu

Department of Physics, Zhejiang University, Hangzhou 310027

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CHEN Lin-Fei, ZHAO Dao-Mu 2006 Chin. Phys. Lett. 23 603-606

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Abstract We propose a new method to add different images together by optical implementation that is realized by the multi-exposure based on fractional Fourier transform hologram. Partial image fusion is proposed and realized by this method. Multiple images encryption can also be implemented by the multi-exposure of the hologram based on fractional Fourier transform. Computer simulations prove that this method is valid.

Keywords: 42.30.Kq 42.30.-d

Published: 01 March 2006

PACS:	42.30.Kq	(Fourier optics)
	42.30.-d	(Imaging and optical processing)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2006/V23/I3/0603

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