A kind of multilevel authentication system for multiple-image by modulated real part synthesis and iterative phase multiplexing
A kind of multilevel authentication system for multiple-image by modulated real part synthesis and iterative phase multiplexing
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一种基于调制实部合成和迭代相位复用的多图像多级认证系统
DOI：
10.1080/09500340.2015.1088585
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发表时间：
2016-04
影响因子：
1.3
通讯作者：
Hongyi Chen
中科院分区：
文献类型：
--
作者：
Xiang Peng;Wenqi He;Guoyan Dong;Hongyi Chen
提出了一种基于调制实部合成和菲涅耳域迭代相位复用的多图像多级认证系统。在低级别认证系统的设计过程中，利用菲涅耳域的相位恢复算法迭代生成一系列归一化实部信息，并通过二进制幅度调制、叠加、合成、采样等方法生成不同个体低级认证图像的最终私钥；而在高级认证系统的设计过程中，通过迭代相位信息编码和复接生成不同个体高级别认证图像的最终私钥。在高层认证过程中，利用对应的正确私钥通过反菲涅耳变换重构有意义的认证图像，同时利用相关系数作为判断标准；而在底层认证中，利用正确的密钥可以恢复出无意义信息的类噪声图像，但会在非线性相关系数中产生一个显著的峰值，以此作为判断底层认证成功与否的标准。理论分析和数值仿真均验证了该方法的可行性。
A kind of multilevel authentication system for multiple-image based on modulated real part synthesis and iterative phase multiplexing in the Fresnel domain is proposed. In the design process of the low-level authentication system, a series of normalized real part information are iteratively generated by phase retrieval algorithm in the Fresnel domain, and the final private keys for different individual low-level certification images can be fabricated by binary amplitude modulation, superposition, synthesis, and sampling; while in the design process of the high-level authentication system, the final private keys for different individual high-level certification images can be generated by iterative phase information encoding and multiplexing. During the high-level authentication, the meaningful certification image can be reconstructed by the inverse Fresnel transform with the corresponding correct private keys, meanwhile, the correlation coefficient is utilized as judgment criterion; while in the low-level authentication, with the help of correct keys, the noise-like image with meaningless information can be recovered, but a remarkable peak output in the nonlinear correlation coefficient can be generated, which is adopted as the criterion to judge whether the low-level authentication is successful or not. Theoretical analysis and numerical simulations both verify the feasibility of the proposed method.
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