Optical encryption of unlimited-size images based on ptychographic scanning digital holography.

The ptychographic scanning operation is introduced into digital holography to expand the field-of-view (FOV). An optical image encryption method based on this technique is further proposed and analyzed. The plaintext is moved sequentially in the way of ptychographic scanning and corresponding pairs of phase-shifted interferograms are recorded as ciphertexts. Then the holographic processing and the ptychographic iterative reconstruction are both employed to retrieve the plaintext. Numerical experiments demonstrate that the proposed system possesses high security level and wide FOV. The proposed method might also be used for other potential applications, such as three-dimensional information encryption and image hiding.

[1]  Yi-Shi Shi,et al.  Ptychographical Imaging Algorithm with a Single Random Phase Encoding , 2013 .

[2]  B Javidi,et al.  Optical image encryption based on input plane and Fourier plane random encoding. , 1995, Optics letters.

[3]  Yan Zhang,et al.  Optical image encryption with spatially incoherent illumination. , 2013, Optics letters.

[4]  L Z Cai,et al.  Two-step phase-shifting interferometry and its application in image encryption. , 2006, Optics letters.

[5]  B. Javidi,et al.  Encrypting three-dimensional information with digital holography. , 2000, Applied optics.

[6]  A. G. Cullis,et al.  Hard-x-ray lensless imaging of extended objects. , 2007, Physical review letters.

[7]  B Javidi,et al.  Securing information by use of digital holography. , 2000, Optics letters.

[8]  D. Sampson,et al.  High-resolution, wide-field object reconstruction with synthetic aperture Fourier holographic optical microscopy. , 2009, Optics express.

[9]  G. Unnikrishnan,et al.  Optical encryption by double-random phase encoding in the fractional Fourier domain. , 2000, Optics letters.

[10]  Yujing Han,et al.  Optical image encryption based on two beams' interference , 2010 .

[11]  Zhengjun Liu,et al.  Double image encryption by using iterative random binary encoding in gyrator domains. , 2010, Optics express.

[12]  Walter Hoppe,et al.  Trace structure analysis, ptychography, phase tomography , 1982 .

[13]  Osamu Matoba,et al.  Optical Techniques for Information Security , 2009, Proceedings of the IEEE.

[14]  Wen Chen,et al.  High-flexibility optical encryption via aperture movement. , 2013, Optics express.

[15]  Zhengjun Liu,et al.  Double image encryption based on iterative fractional Fourier transform , 2007 .

[16]  Jesús Lancis,et al.  Optical encryption based on computational ghost imaging. , 2010, Optics letters.

[17]  B Javidi,et al.  Optoelectronic information encryption with phase-shifting interferometry. , 2000, Applied optics.

[18]  Ayman Alfalou,et al.  Optical image compression and encryption methods , 2009 .

[19]  Li Yu,et al.  Optical image encryption by cascaded fractional Fourier transforms with random phase filtering , 2001 .

[20]  Jianlin Zhao,et al.  High resolution digital holographic microscopy with a wide field of view based on a synthetic aperture technique and use of linear CCD scanning. , 2008, Applied optics.

[21]  J. Rodenburg.  Ptychography and Related Diffractive Imaging Methods , 2008 .

[22]  S Liu,et al.  Optical image encryption with multistage and multichannel fractional Fourier-domain filtering. , 2001, Optics letters.

[23]  Lilong Cai,et al.  Multidimensional data encryption with digital holography , 2003 .

[24]  Linfei Chen,et al.  Optical image encryption with Hartley transforms. , 2006, Optics letters.

[25]  Tuo Li,et al.  Application of diffractive optical elements for controlling the light beam in ptychography , 2013 .

[26]  Yeon H. Lee,et al.  Encryption of digital hologram of 3-D object by virtual optics. , 2004, Optics express.

[27]  Ting-Chung Poon,et al.  Multiple-image encryption by compressive holography. , 2012, Applied optics.

[28]  J. Rodenburg,et al.  Movable aperture lensless transmission microscopy: a novel phase retrieval algorithm. , 2004, Physical review letters.

[29]  Yongtian Wang,et al.  Optical image encryption based on interference of polarized light. , 2009, Optics express.

[30]  John T. Sheridan,et al.  A review of optical image encryption techniques , 2014 .

[31]  Xudong Chen,et al.  Optical image encryption based on diffractive imaging. , 2010, Optics letters.

[32]  Wen Chen,et al.  Structured-illumination-based lensless diffractive imaging and its application to optical image encryption , 2012 .

[33]  Shi Yi-Shi,et al.  Generalized Ptychography with Diverse Probes , 2013 .

[34]  Sanguo Zhang,et al.  Optical image encryption via ptychography. , 2013, Optics letters.

[35]  Bo Wang,et al.  Optical image encryption based on interference. , 2008, Optics letters.

[36]  John T. Sheridan,et al.  Optical image encryption by random shifting in fractional Fourier domains. , 2003, Optics letters.

[37]  Jingjuan Zhang,et al.  Double random-phase encoding in the Fresnel domain. , 2004, Optics letters.