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Three-dimensional joint transform correlator cryptosystem
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DOI：10.1364/OL.41.000599.png)
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Abstract
En 中文
We introduce for the first time, to the best of our knowledge, a three-dimensional experimental joint transform correlator (JTC) cryptosystem allowing the encryption of information for any 3D object, and as an additional novel feature, a second 3D object plays the role of the encoding key. While the JTC architecture is normally used to process 2D data, in this work, we envisage a technique that allows the use of this architecture to protect 3D data. The encrypted object information is contained in the joint power spectrum. We register the key object as a digital off-axis Fourier hologram. The encryption procedure is done optically, while the decryption is carried out by means of a virtual optical system, allowing for flexible implementation of the proposal. We present experimental results to demonstrate the validity and feasibility of the method. (C) 2016 Optical Society of America
Keywords:
OPTICAL SECURITY SYSTEMS
DIGITAL HOLOGRAPHY
NUMERICAL RECONSTRUCTION
ENCRYPTION
INFORMATION
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