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Asian Journal of Physics Vol. 30 Nos 8 & 9 (2021) 1387-1396

An eagle eye view: Three-dimensional (3D) imaging based optical encryption

Inbarasan Muniraj1, Sunil Chinnadurai1, and John T Sheridan2

Abstract

Recent advancements in communication systems together with the development of sophisticated opto-electronic devices made voluminous data transfer possible. Owing to growth of the Internet of Things (IoT), approximately 2.5 quintillion bytes of data is being generated every day and shared across the internet [1]. Our “digitized and datafied era” demands effective methods to protect information, systems, and networks. Over the past few decades, a variety of digital, optical, and optically inspired digital techniques have been developed to achieve security. Some of the most popular approaches are Steganography, Watermarking, Cryptography, and Optical Signal Processing (OSP) based approaches, which include various encryption and authentication schemes. Conventionally, OSP based image encryption approaches have been developed for only two-dimensional (2D) images as the development of three-dimensional (3D) imaging systems was underdeveloped. However, in recent years, the implementation and applications of 3D imaging systems have been greatly discussed. This article aims to review some of the recent implementations of OSP based encryption systems designed for 3D imaging systems such as Computational Integral Imaging, Digital Holography and Microscopic Imaging. In general, most of these systems record the 3D complex amplitude by capturing encrypted diffraction patterns. By properly utilising the decryption keys together with numerical reconstruction algorithms, 3D scene reconstruction is possible. © Anita Publications. All rights reserved.
Keywords: 3D Optical Image Encryption, Integral Imaging, Digital Holography, Microscopic Imaging.

Peer Review Information
Method: Single- anonymous; Screened for Plagiarism? Yes
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