Multiple-image authentication with a cascaded multilevel architecture based on amplitude field random sampling and phase information multiplexing.
Multiple-image authentication with a cascaded multilevel architecture based on amplitude field random sampling and phase information multiplexing.
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DOI：
10.1364/ao.54.003204
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发表时间：
2015-04
期刊：
影响因子：
1.9
通讯作者：
Desheng Fan;Xiangfeng Meng;Yurong Wang;Xiulun Yang;Xuemei Pan;Xiang Peng;W. He;G. Dong;Hongyi Ch
中科院分区：
文献类型：
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作者：
Desheng Fan;Xiangfeng Meng;Yurong Wang;Xiulun Yang;Xuemei Pan;Xiang Peng;W. He;G. Dong;Hongyi Ch
提出了一种菲涅耳域级联多级架构的多图像认证方法，首先构造合成编码复振幅，对低级认证图像通过迭代振幅编码、随机采样和空间复用生成其真实振幅分量，而对高级认证图像通过迭代相位信息编码和复用构造合成编码复振幅的相位分量。然后，将合成编码的复振幅迭代编码为位于两个不同变换平面中的两个相位型密文。在高级认证过程中，当将两个阶段型密文和高级解密密钥呈现给系统，然后进行菲涅尔变换时，可以在输出平面中恢复出具有良好质量且与原始认证图像具有高相关系数的有意义的图像。与高级认证的过程类似，在借助低级解密密钥进行低级认证的情况下，不会检索到重要或有意义的信息，但会导致输出图像和相应的原始认证图像的非线性相关系数中出现显着的峰值输出。因此，该方法通过相同的级联多级架构实现了不同权限级别对原始认证图像的不同级别的可访问性。
A multiple-image authentication method with a cascaded multilevel architecture in the Fresnel domain is proposed, in which a synthetic encoded complex amplitude is first fabricated, and its real amplitude component is generated by iterative amplitude encoding, random sampling, and space multiplexing for the low-level certification images, while the phase component of the synthetic encoded complex amplitude is constructed by iterative phase information encoding and multiplexing for the high-level certification images. Then the synthetic encoded complex amplitude is iteratively encoded into two phase-type ciphertexts located in two different transform planes. During high-level authentication, when the two phase-type ciphertexts and the high-level decryption key are presented to the system and then the Fresnel transform is carried out, a meaningful image with good quality and a high correlation coefficient with the original certification image can be recovered in the output plane. Similar to the procedure of high-level authentication, in the case of low-level authentication with the aid of a low-level decryption key, no significant or meaningful information is retrieved, but it can result in a remarkable peak output in the nonlinear correlation coefficient of the output image and the corresponding original certification image. Therefore, the method realizes different levels of accessibility to the original certification image for different authority levels with the same cascaded multilevel architecture.