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 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.
Journal ArticleDOI
Digital recording and numerical reconstruction of holograms
Ulf Schnars,Werner Jüptner +1 more
TL;DR: The principles and major applications of digital recording and numerical reconstruction of holograms (digital holography) are described, which are applied to measure shape and surface deformation of opaque bodies and refractive index fields within transparent media.
Journal ArticleDOI
Optical image compression and encryption methods
Ayman Alfalou,Christian Brosseau +1 more
TL;DR: Optical processing methodologies, based on filtering, are described that are applicable to transmission and/or data storage and the advantages and limitations of a set of optical compression and encryption methods are discussed.
Journal ArticleDOI
Resistance of the double random phase encryption against various attacks
TL;DR: A technique to recover the exact keys with only two known plain images is described, and this technique is compared to other attacks proposed in the literature.
Journal ArticleDOI
Optical encryption based on computational ghost imaging
TL;DR: This Letter shows how computational ghost imaging can be used to encrypt and transmit object information to a remote party and important features, such as key compressibility and vulnerability to eavesdropping, are experimentally analyzed.
References
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Book
Combined Optical and Neural Network Fingerprint Matching
TL;DR: Initial results with real- time images suggest that the difficulties resulting from finger deformation can be avoided by combining many different distorted images when the hologram is constructed in the correlator.
Proceedings ArticleDOI
Digital volume holographic data storage using phase-coded multiplexing
TL;DR: A first realization of digital data storage by means of phase-coded multiplexing for volume holographic memories and data encryption of the stored data using an additional random phase key is discussed and experimental results are shown.
Related Papers (5)
Optical image encryption based on input plane and Fourier plane random encoding.
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