Abstract

A multiple-image encryption scheme is proposed based on the phase retrieval process and phase mask multiplexing in the fractional Fourier transform domain. First, each original gray-scale image is encoded into a phase only function by using the proposed phase retrieval process. Second, all the obtained phase functions are modulated into an interim, which is encrypted into the final ciphertext by using the fractional Fourier transform. From a plaintext image, a group of phase masks is generated in the encryption process. The corresponding decrypted image can be recovered from the ciphertext only with the correct phase mask group in the decryption process. Simulation results show that the proposed phase retrieval process has high convergence speed, and the encryption algorithm can avoid cross-talk; in addition, its encrypted capacity is considerably enhanced.

© 2013 Optical Society of America

Multiple-image encryption based on interference principle and phase-only mask multiplexing in Fresnel transform domain

Qu Wang, Qing Guo, Liang Lei, and Jinyun Zhou
Appl. Opt. 52(28) 6849-6857 (2013)

Multi-depth three-dimensional image encryption based on the phase retrieval algorithm in the Fresnel and fractional Fourier transform domains

Mei-Lan Piao, Zi-Xiong Liu, Yan-Ling Piao, Hui-Ying Wu, Zhao Yu, and Nam Kim
Appl. Opt. 57(26) 7609-7617 (2018)

Double image encryption based on random phase encoding in the fractional Fourier domain

Ran Tao, Yi Xin, and Yue Wang
Opt. Express 15(24) 16067-16079 (2007)

Optical image encryption based on the multiple-parameter fractional Fourier transform

Ran Tao, Jun Lang, and Yue Wang
Opt. Lett. 33(6) 581-583 (2008)

Multiple-image encryption scheme based on cascaded fractional Fourier transform

Dezhao Kong, Xueju Shen, Qinzu Xu, Wang Xin, and Haiqiong Guo
Appl. Opt. 52(12) 2619-2625 (2013)