Multiple-image authentication based on the single-pixel correlated imaging and multiple-level wavelet transform
Multiple-image authentication based on the single-pixel correlated imaging and multiple-level wavelet transform
复制标题
基于单像素相关成像和多级小波变换的多图像认证
DOI：
10.1016/j.optlaseng.2020.106102
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发表时间：
2020-07
影响因子：
4.6
通讯作者：
Asundi An
中科院分区：
文献类型：
--
作者：
Liansheng Sui;Liwen Zhang;Qiang Wang;Ailing Tian;Asundi An
单像素相关成像技术是近几十年来发展起来的最有前途的成像技术之一。针对多幅图像的认证问题，设计了一种新的单像素相关成像机制。物波被嵌入两个级联空间光调制器中的一系列纯相位掩模对顺序调制。调制波穿过位于物平面的输入图像，其强度通过使用没有空间分辨率的单像素桶检测器被记录为密文值之一。该方法利用多尺度小波变换得到明文图像的稀疏数据，并利用二值幅度模板构造中间图像。该方法将比明文图像尺寸小的中间图像作为单像素相关成像的输入，保证了测量次数的减少。同时，利用一种有效的迭代相位恢复算法，从由空间正交Hadamard矩阵的行向量构成的二维图案中恢复纯相位掩模对。由于利用这些纯相位掩模对产生的散斑图之间的冗余被极大地抑制，因此可以进一步减少测量的数量。此外，相关的二进制幅度掩码被用作密钥，使安全级别也得到了广泛的提高。因此，该方法可以有效地实现多图像认证的目的，为基于单像素相关成像的光学认证提供了一种新的研究思路。
Single-pixel correlated imaging has been developed as one of the most promising techniques in the past decades. In this paper, a new mechanism of single-pixel correlated imaging is designed for multiple-image authentication. The object wave is sequentially modulated by a series of phase-only mask pairs embedded into two cascaded spatial light modulators. The modulated wave passes through the input image located in the object plane, and its intensity is recorded as one of the ciphertext values by using a single-pixel bucket detector without spatial resolution. The sparse data of plaintext images are obtained with the multiple-level wavelet transform and used to construct an interim image with the help of binary amplitude masks. The interim image with a smaller size than that of plaintext images is considered as the input of single-pixel correlated imaging, which can guarantee the number of measurements reduced. Simultaneously, the phase-only mask pairs are retrieved from the 2D patterns formed with the row vectors of the spatially orthogonal Hadamard matrix by using an efficient iterative phase retrieval algorithm. Because the redundancy between speckle patterns generated with these phase-only mask pairs is greatly restrained, the number of measurements can be further reduced. Moreover, the related binary amplitude masks are employed as the secret keys so that the security level is also extensively enhanced. Given the above, the proposed method can significantly achieve the goal of multiple-image verification and provide a different research approach for optical authentication based on single-pixel correlated imaging.
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影响因子：
2.4
作者：
Yi Qin;Yingying Zhang
通讯作者：
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DOI：
10.1016/j.jisa.2019.01.004
发表时间：
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期刊：
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影响因子：
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作者：
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