Optical Encryption Based on 3-D Sphere and Phase Retrieval in Gyrator Transform Domain
IEEE TENCON 2013——With the rapid development of modern technologies, information security has attracted more and more current attention. In this talk, we present optical image encryption based on 3-D sphere and phase retrieval in gyrator transform domain. The plaintext is divided into a series of small quadratic blocks, and each block is treated as a particle. The series of particles is distributed in 3-D spheres, and is encrypted into one phase-only mask based on an iterative phase retrieval algorithm. During image decryption, the extracted phase-only mask is rotated and illuminated to sequentially extract a series of focused particles. Subsequently, a decrypted image can be obtained by incorporating all the decoded particles in the transverse domain. Numerical experiment is conducted to demonstrate feasibility and effectiv eness of the presented method.
关键词： 信息安全 光学图像加密 3-D球体 相位恢复 图像解密 IEEE TENCON 2013
主讲人：Wen Chen 机构：National University of Singapore
时长：0:08:49 年代：2013年
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