Abstract
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.
© 2016 Optical Society of America
Full Article | PDF ArticleMore Like This
Carlos Vargas-Castrillón, Alejandro Velez-Zea, and John Fredy Barrera-Ramírez
Opt. Lett. 48(3) 672-675 (2023)
Joseph Rosen
Appl. Opt. 37(32) 7538-7544 (1998)
Cecilia La Mela and Claudio Iemmi
Opt. Lett. 31(17) 2562-2564 (2006)