Journal of University of Chinese Academy of Sciences >
Optical image encryption based on Fourier ptychography
Received date: 2015-09-06
Revised date: 2016-03-26
Online published: 2016-09-15
We propose a method for optical image encryption based on Fourier ptychography (FP).On the basis of 4f double random phase encoding system, the filter aperture (probe) is placed at the Fourier plane, so that the object support constrains for phase retrieval of FP are imposed by the confined optical-transfer-functions in the Fourier domain. Furthermore, we adopt the low numerical aperture objective lens and the variable-angle illumination, which simplifies the device effectively. Numerical simulation results show that the method has the merits of high convergence speed, feasibility, robustness, decryption quality,and security.
XU Wenhui , LI Tuo , SHI Yishi . Optical image encryption based on Fourier ptychography[J]. Journal of University of Chinese Academy of Sciences, 2016 , 33(5) : 612 -617 . DOI: 10.7523/j.issn.2095-6134.2016.05.006
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