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Security and Communication Networks
Volume 2018 (2018), Article ID 2658318, 9 pages
Research Article

Two-Step Integral Imaging Coding Based Three-Dimensional Information Encryption Approach

School of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China

Correspondence should be addressed to Qiong-Hua Wang

Received 26 October 2017; Accepted 14 November 2017; Published 16 January 2018

Academic Editor: Muhammad R. Abuturab

Copyright © 2018 Min Zhao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We propose a two-step integral imaging coding based three-dimensional (3D) information encryption approach in this paper. In this approach, a synthetic aperture integral imaging system is applied to acquire a set of parallax images including spatial and angular information of 3D scene. In the encryption process, two-step coding is performed. In the first step, the acquired parallax images are encrypted firstly by double random-phase coding in the Fresnel domain. In the second step, these encrypted parallax images are encoded into a cipher image by mapping algorithm which is used to generate elemental image array of integral imaging. In the decryption process, an inverse operation is performed. The experimental results demonstrate the feasibility, security, and robustness of the proposed approach.