摘要
应用光学图像加密的思想,将离散四元数傅里叶变换(DQFT)与双随机相位加密技术相结合,提出了一种应用于彩色图像的双随机相位加密新技术.基于DQFT的双随机相位加密技术可将彩色图像作为一个整体进行加密,从而在保持了系统的保密性能的同时,有效地降低了复杂性.阐述了加密和解密的原理,并通过实验对其鲁棒性进行了验证.
In this paper,a new method for color-image encryption using discrete quaternion fourier-transforms（DQFT） combined with doubled random-phase encryption as used in the optical implementation is proposed,by which color images can be processed as a whole,rather than as separated color components in three channels,so that the complexity of the encryption system can be effectively reduced without any reduction in its security.The principle of both encryption and decryption is detailed and the robustness of the system has been examined experimentally.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2008年第11期6955-6961,共7页
Acta Physica Sinica
基金
国家自然科学基金(批准号:60577017
60777007)资助的课题~~
作者简介
通讯联系人．E-mail：zhai@nankai．edu．cn
