A Recovery Method of Double Random Phase Encoding System With a Parallel Phase Retrieval

A Recovery Method of Double Random Phase Encoding System With a Parallel Phase Retrieval
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一种并行相位检索的双随机相位编码系统恢复方法

DOI:
10.1109/jphot.2016.2527699
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发表时间:
2016-02
影响因子:
2.4
通讯作者:
Liu Shutian
Liu Shutian
中科院分区:
工程技术4区
文献类型:
--
作者:
Liu Zhengjun;Shen Cheng;Tan Jiubin;Liu Shutian

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为了精确恢复双随机相位编码系统的相位分布,提出了一种相位恢复的新方法。该系统采用点光源照明,在其输出端记录了多个有序的衍射光强图案。在系统的输出平面处的相位通过与所记录的图像的并行迭代相位恢复算法来计算。在重构相位的帮助下,可以通过逆傅里叶变换来确定两个相位掩模。作为一种选择明文攻击,该方法可以恢复出高质量的秘密图像。
A novel method composed of phase retrieval is proposed to precisely recover the phase distribution in the double random phase encoding system. The model of a point light source is employed to illuminate the system, in the output side of which several diffracted intensity patterns are recorded in an orderly way. The phase at the output plane of the system is calculated by a parallel iterative phase retrieval algorithm with the recorded images. With the help of the reconstructed phase, the two phase masks can be determined by inverse Fourier transform. As a kind of chosen-plaintext attack, the secret image with high quality can be recovered with the proposed method.
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