Journal ArticleDOI
Encrypting three-dimensional information with digital holography
Enrique Tajahuerce,Bahram Javidi +1 more
TLDR
A method for optical encryption of three-dimensional (3D) information by use of digital holography using a phase-shifting interferometer and an intensity-recording device.Abstract:
A method for optical encryption of three-dimensional (3D) information by use of digital holography is presented. A phase-shifting interferometer records the phase and amplitude information generated by a 3D object at a plane located in the Fresnel diffraction region with an intensity-recording device. Encryption is performed optically by use of the Fresnel diffraction pattern of a random phase code. Images of the 3D object with different perspectives and focused at different planes can be generated digital or optically after decryption with the proper key. Experimental results are presented.read more
Citations
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Journal ArticleDOI
Security of virtual-optics-based cryptosystem
Xiang Peng,Xiang Peng,Peng Zhang +2 more
TL;DR: A security analysis to the virtual optics (VO)-based cryptosystems is presented, in which several aspects affecting security strength of the algorithm involved in such systems are considered.
Journal ArticleDOI
Hierarchical multilevel authentication system for multiple-image based on phase retrieval and basic vector operations
Xianye Li,Xiangfeng Meng,Yongkai Yin,Xiulun Yang,Yurong Wang,Xiang Peng,Wenqi He,Xuemei Pan,Guoyan Dong,Hongyi Chen +9 more
TL;DR: A hierarchical multilevel authentication system for multiple-image based on phase retrieval and basic vector operations in the Fresnel domain is proposed, by which more certification images are iteratively encoded into multiple cascaded phase masks according to different hierarchical levels.
Journal ArticleDOI
Realistic modeling of digital holographic microscopy
TL;DR: A self-contained platform for realistic modeling of digital holographic microscopy (DHM) that can be modeled to produce numerical DHM holograms that include all the parameters that are present in real experiments, providing an accessible way for newcomers to have a first approach to this research field.
Book ChapterDOI
Applications of Digital Holography for Information Security
TL;DR: Secure optical storage based on a configuration of a joint transform correlator (JTC) using a photorefractive material is presented and a key code designed by an optimized algorithm so that its Fourier transform has a uniform amplitude distribution and a uniformly random phase distribution is introduced.
Journal ArticleDOI
Robust multidepth object encryption based on a computer-generated hologram with a cascaded structure.
TL;DR: A robust, asymmetric, multidepth, three-dimensional object encryption scheme based on a computer-generated Fresnel hologram in the cascaded fractional Fourier domain that possesses high resistance against various potential attacks, such as brute-force, chosen-plain text, known-plaintext, and ciphertext-only attacks is proposed.
References
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Journal ArticleDOI
An algorithm for the machine calculation of complex Fourier series
J.W. Cooley,John W. Tukey +1 more
TL;DR: Good generalized these methods and gave elegant algorithms for which one class of applications is the calculation of Fourier series, applicable to certain problems in which one must multiply an N-vector by an N X N matrix which can be factored into m sparse matrices.
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Optical image encryption based on input plane and Fourier plane random encoding.
Philippe Réfrégier,Bahram Javidi +1 more
TL;DR: A new optical encoding method of images for security applications is proposed and it is shown that the encoding converts the input signal to stationary white noise and that the reconstruction method is robust.
Journal ArticleDOI
Phase-shifting digital holography
Ichirou Yamaguchi,Tong Zhang +1 more
TL;DR: A new method is proposed in which the distribution of complex amplitude at a plane is measured by phase-shifting interferometry and then Fresnel transformed by a digital computer, which can reconstruct an arbitrary cross section of a three-dimensional object with higher image quality and a wider viewing angle than from conventional digital holography using an off-axis configuration.
Journal ArticleDOI
Direct recording of holograms by a CCD target and numerical reconstruction.
Ulf Schnars,W. Jüptner +1 more
TL;DR: The principle of recording holograms directly on a CCD target is described and a real image of the object is reconstructed from the digitally sampled hologram by means of numerical methods.
Journal Article
Digital wavefront measuring interferometer for testing optical surfaces and lenses
TL;DR: In this article, a self-scanned 1024 element photodiode array and a minicomputer are used to measure the phase (wavefront) in the interference pattern of an interferometer to lambda/100.
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Optical image encryption based on input plane and Fourier plane random encoding.
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