Optical Image Addition and Encryption by Multi-Exposure Based on Fractional Fourier Transform Hologram
Linfei Chen, Zhao Dao-Mu · Chinese Physics Letters · 2006
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.