Optical image conversion and encryption by diffraction, phase retrieval algorithm and incoherent superposition
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- 作者：Linfei Chena ; chenlinfei2004@163.com" class="auth_mail" title="E-mail the corresponding author ; Guojun Changa ; Bingyu Hea ; Haidan Maoa ; Daomu Zhaob
- 关键词：Optical image encryption ; Fresnel diffraction ; Phase retrieval algorithm ; Incoherent superposition
- 刊名：Optics and Lasers in Engineering
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：88
- 期：Complete
- 页码：221-232
- 全文大小：8873 K
文摘
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The proposed method can achieve the conversion of a color image to another gray image.
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By phase iterative algorithms, six phase masks can be cleverly designed in encryption process.
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By incoherent superposition, the correct information can be recovered with all the required keys.
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Finally, numerical simulations are shown to prove the possibility and safety of the method.