Modified computational integral imaging-based double image encryption using fractional Fourier transform

Abstract

a b s t r a c tIn this paper, we propose an image encryption technique to simultaneously encrypt double or multiple images into one encrypted image using computational integral imaging (CII) and fractional Fourier transform (FrFT). In the encryption, each of the input plane images are located at different positions along a pickup plane, and simultaneously recorded in the form of an elemental image array (EIA) through a lenslet array. The recorded EIA to be encrypted is multiplied by FrFT with two different fractional orders. In order to mitigate the drawbacks of occlusion noise in computational integral imaging reconstruction (CIIR), the plane images can be reconstructed using a modified CIIR technique. To further improve the solution of the reconstructed plane images, a block matching algorithm is also introduced. Numerical simulation results verify the feasibility and effectiveness of the proposed method.

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

“…However, the method is only applied to encrypt a 2D image. 3D image encryption techniques based on computational integral imaging were proposed [31]. In the method, computational integral imaging is applied to pick up double images to generate EIA; then the EIA is encrypted by a cryptographic technology.…”

Asymmetric multiple-image encryption based on the cascaded fractional Fourier transform

“…During the past two decades, a large number of image encryption systems have been proposed after Refregier and Javide encrypted a primary image into stationary white noise using the double random phase encoding (DRPE) in the Fourier domain [1]. Due to the capability of the DRPE to ensure the security of the data transmission and communication, this algorithm has been developed based on different transforms, such as the general fractional Fourier transform [2][3][4][5], the vector power multiple-parameter fractional Fourier transform [6], the Fresnel transform [7], and the Gyrator transform [8][9][10][11]. However, most cryptosystems are linear, which makes them vulnerable to potential attacks such as the chosen plaintext attack.…”

Color image encryption by using Yang-Gu mixture amplitude-phase retrieval algorithm in gyrator transform domain and two-dimensional Sine logistic modulation map

“…Generally, Chen et al [24] provided a detailed description on the current and future development. Recently, researchers developed novel schemes based on other optics techniques such as coherent diffractive imaging [25], polarized light encoding [26], interference [27][28][29], holography [30] and integral imaging [31].…”