基于数据隐私保护机制的光学图像加密研究  

Optical image encryption based on data privacy protection mechanism

作　　者：王雪飞[1] 王鹏[1] WANG Xuefei;WANG Peng(Suihua University,Suihua Heilongjiang 152000,China)

机构地区：[1]绥化学院,黑龙江绥化152000

出　　处：《激光杂志》2023年第2期102-107,共6页Laser Journal

基　　金：黑龙江省科研业务费项目(No.KYYWF1023618010)。

摘　　要：为提高光学图像信息的安全性,研究基于数据隐私保护机制的光学图像加密方法。采用Logistic映射的输出序列生成光学图像的混沌掩码,将其与螺旋相位掩码相结合,形成混合相位掩码,经希尔伯特变换和波带片相位模型调和后获取调和掩码,校正光学装置光轴;采用相位复用算法中的杨-顾算法,依据调和掩码将光学图像加密成实值光学图像,将线性滤波引入到解密光学图像中,提高解密光学图像质量与加密光学图像的数量,实现高容量的多光学图像加密。实验表明,该方法可压缩加密光学图像,并提高解密光学图像质量,加密质量系数为0.9,加密信息熵值平均为8.999 6。In order to improve the security of optical image information, the optical image encryption method based on data privacy protection mechanism is studied. The chaotic mask of optical image is generated by the output sequence of Logistic mapping, which is combined with the spiral phase mask to form a mixed phase mask. The harmonic mask is obtained after Hilbert transform and the phase model of zone plate harmonic, and the optical axis of the optical device is corrected. Yang-Gu algorithm in phase multiplexing algorithm is used to encrypt optical images into real-valued optical images according to harmonic mask, and linear filtering is introduced into decrypted optical images to improve the quality of decrypted optical images and the number of encrypted optical images, thus realizing high-capacity multi-optical image encryption. Experiments show that this method can compress encrypted optical images and improve the quality of decrypted optical images. The encryption quality coefficient is 0. 9, and the average encryption information entropy value is 8. 999 6.

关 键 词：数据隐私保护 光学图像加密 LOGISTIC映射 混合相位掩码 光轴校准 解密光学图像 

分 类 号：TN918[电子电信—通信与信息系统]