Abstract

A new image encoding and identification scheme is proposed for security verification by us-ing a CGH(computer generated hologram), random phase mask, and a correlation technique. The encrypted image, which is attached to the security product, is made by multiplying a QP- CGH(quadratic phase CGI) with a random phase function. The random phase function plays a key role when the encrypted image is decrypted. The encrypted image can be optically recovered by a 2-f imaging system and automatically verified for personal identification by a 4-f correlation system. Simulation results show the proposed method can be used for both the reconstruction of an original image and the recognition of an encrypted image.

© 2000 Optical Society of Korea

Experimental study on optical image encryption with asymmetric double random phase and computer-generated hologram

Sixing Xi, Xiaolei Wang, Lipei Song, Zhuqing Zhu, Bowen Zhu, Shuai Huang, Nana Yu, and Huaying Wang
Opt. Express 25(7) 8212-8222 (2017)

Learning-based attacks for detecting the vulnerability of computer-generated hologram based optical encryption

Lina Zhou, Yin Xiao, and Wen Chen
Opt. Express 28(2) 2499-2510 (2020)

Three-dimensional scene encryption and display based on computer-generated holograms

Dezhao Kong, Liangcai Cao, Guofan Jin, and Bahram Javidi
Appl. Opt. 55(29) 8296-8300 (2016)

An optimized watermarking scheme using an encrypted gyrator transform computer generated hologram based on particle swarm optimization

Jianzhong Li
Opt. Express 22(8) 10002-10016 (2014)

Robust multidepth object encryption based on a computer-generated hologram with a cascaded structure

Mei-Lan Piao, Shi-Gang Wang, Yan Zhao, Jian Wei, Yu Zhao, and Nam Kim
Appl. Opt. 58(36) 9921-9930 (2019)