Optical image hiding with a modified Mach-Zehnder interferometer
Optical image hiding with a modified Mach-Zehnder interferometer
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DOI：
10.1016/j.optlaseng.2013.12.002
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发表时间：
2014-04-01
影响因子：
4.6
通讯作者：
Li, Rong
中科院分区：
文献类型：
--
作者：
Li, Jun;Li, Jiaosheng;Li, Rong
提出了一种基于菲涅耳域的光学图像隐藏方法。在我们改进的Mach-Zehnder干涉仪（MZI）架构中，将物光束插入待隐藏的物像中;参考光束由激光照射通过相位板和主图像产生。之后，参考光不仅可以在全息记录过程中提供相移，而且可以添加宿主图像以实现图像隐藏功能。在两个图像经历菲涅耳衍射之后，衍射波被记录为CCD平面上的干涉图案，其类似于主图像的菲涅耳衍射图案。目标图像被嵌入到菲涅尔域内部的宿主图像中。在这里，我们提出了这种方法的理论分析和初步的实验结果。它可以广泛应用于图像在互联网上的高速安全传输和图像水印。(C)2013爱思唯尔有限公司保留所有权利。
A method for optical image hiding in a Fresnel domain is proposed. In our modified Mach-Zehnder interferometer (MZI) architecture, an object beam is inserted into the object image to be hidden; the reference beam is produced by laser illumination through the phase plates and the host image. Afterwards, the reference beam is not only restricted to providing phase shifts in the hologram-recording process, but it can also add host image to engage the image hiding function. After two images experience Fresnel diffraction, the diffraction waves are registered as interference patterns on a CCD plane, which resembles a Fresnel diffraction pattern of the host image. The object image is embedded in the host image inside the Fresnel domain. Here, we present a theoretical analysis and preliminary experimental results for this method. It can be widely applied to secure image transmissions at a high speed over the internet and for image watermarking. (C) 2013 Elsevier Ltd. All rights reserved.