收稿日期: 2015-09-06
修回日期: 2016-03-26
网络出版日期: 2016-09-15
基金资助
国家自然科学基金（61575197）资助
Optical image encryption based on Fourier ptychography
Received date: 2015-09-06
Revised date: 2016-03-26
Online published: 2016-09-15
许文慧 , 李拓 , 史祎诗 . 基于傅里叶叠层成像的光学图像加密[J]. 中国科学院大学学报, 2016 , 33(5) : 612 -617 . DOI: 10.7523/j.issn.2095-6134.2016.05.006
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.
[1] Zheng G,Horstmeyer R,Yang C. Wide-field,high-resolution Fourier ptychographic microscopy[J]. Nat Photonics,2013,7(9):739-745.
[2] Ou X,Horstmeyer R,Yang C,et al. Quantitative phase imaging via Fourier ptychographic microscopy[J]. Opt Lett,2013,38(22):4845-4848.
[3] Faulkner H M L,Rodenburg J M. Movable aperture lensless transmission microscopy:A novel phase retrieval algorithm[J]. Phys Rev Lett,2004,93(2):023903.
[4] Zheng G,Ou X,Horstmeyer R,et al. Fourier ptychographic microscopy:a gigapixel superscope for biomedicine[J]. Opt Photon News,2014,25(4):26-33.
[5] Garc1'a J,Zalevsky Z,Fixler D. Synthetic aperture superresolution by speckle pattern projection[J]. Opt Exp,2005,13(16):6073-6078.
[6] Alexandrov S A,Hillman T R,Gutzler T,et al. Synthetic aperture Fourier holographic optical microscopy[J]. Phys Rev Lett,2006,97(16):168102.
[7] Guizar-Sicairos M,Fienup J R. Phase retrieval with transverse translation diversity:a nonlinear optimization approach[J]. Opt Exp,2008,16(10):7264-7278.
[8] Hoppe W,Strube G. Diffraction in inhomogeneous primary wave fields. 2. Optical experiments for phase determination of lattice interferences[J]. Acta Crystallogr,1969,A 25:502-507.
[9] Shi Y S,Wang Y L,Zhang S G. Generalized ptychography with diverse probes[J]. Chin Phys Lett,2013,30(5):054203.
[10] Dong S,Shiradkar R,Nanda P,et al. Spectral multiplexing and coherent-state decomposition in Fourier ptychographic imaging[J]. Biomed Opt Express,2014,5(6):1757-1767.
[11] Zheng G. Fourier ptychographic imaging[J]. IEEE Photonics Journal,2014,6(2):0701207.
[12] Horstmeyer R,Yang C. A phase space model of Fourier ptychographic microscopy[J]. Opt Exp,2014,22(1):338-358.
[13] Javidi B. Securing information with optical technologies[J]. Physics Today,1997,50(3):27-32.
[14] Refregier P,Javidi B. Optical image encryption based on input plane and Fourier plane random encoding[J]. Opt Lett,1995,20(7):767-769.
[15] Liu S,Yu L,Zhu B. Optical image encryption by cascaded fractional Fourier transforms with random phase filtering[J]. Opt Commun,2001,187(1):57-63.
[16] Situ G H,Zhang J J. Multiple-image encryption based on wavelength multiplexing[J]. Opt Lett,2005,30(11):1306-1308.
[17] Shi Y S,Li T,Wang Y L,et al. Optical image encryption via ptychography[J]. Opt Lett,2013,38(9):1425-1427.
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