李军, 王尚媛, 李娇声, 雷苗, 尹振兴, 唐志列. 一种具有安全特性的压缩全息成像方法[J]. 华南师范大学学报(自然科学版), 2019, 51(3): 1-7. doi: 10.6054/j.jscnun.2019037
引用本文: 李军, 王尚媛, 李娇声, 雷苗, 尹振兴, 唐志列. 一种具有安全特性的压缩全息成像方法[J]. 华南师范大学学报(自然科学版), 2019, 51(3): 1-7. doi: 10.6054/j.jscnun.2019037
LI Jun, WANG Shangyuan, LI Jiaosheng, LEI Miao, YIN Zhenxing, TANG Zhilie. Compressive Holographic Imaging with Security Features[J]. Journal of South China Normal University (Natural Science Edition), 2019, 51(3): 1-7. doi: 10.6054/j.jscnun.2019037
Citation: LI Jun, WANG Shangyuan, LI Jiaosheng, LEI Miao, YIN Zhenxing, TANG Zhilie. Compressive Holographic Imaging with Security Features[J]. Journal of South China Normal University (Natural Science Edition), 2019, 51(3): 1-7. doi: 10.6054/j.jscnun.2019037

一种具有安全特性的压缩全息成像方法

Compressive Holographic Imaging with Security Features

  • 摘要: 本文提出一种具有安全特性的压缩全息成像技术来解决当下存在于全息成像方面的安全问题.该方法可以在全息成像场景过程中实现光学加密、光学隐藏和光学压缩功能,能够在保护图像信息安全的同时,实现对数据的压缩.该方法将主对象引入经典Mach-Zehnder干涉仪的参考路径中,实现参考波的空间调制,形成参考光场的二维空间分布.之后,对象信息被加密并隐藏到菲涅耳域中目标光束和参考光束的相干成像过程中的主目标信息中,实现对图像的安全保护;同时,安全物体全息图被进一步压缩采样,单像素检测器只需记录较少数据,就可表示原始成像对象.该技术大大减少了对象的数据采集量,可以在纯光系统下安全地获得压缩对象,这是全息成像方法的一大突破,也有望突破全息影像在3DTV、医学诊断、实时全息TV等领域中,影像数据量受限的瓶颈.凭借全光学手段实现光学安全的可行性,本文提出的方法对实现全光网络、近地和星际激光通信链路等方面也有重要参考意义.

     

    Abstract: This paper proposes a compressed holographic imaging technology with security features to solve the security challenges currently in holographic imaging. The method can simultaneously complete optical encryption, optical hiding and optical compression in the holographic imaging process. It can realize the compression of data while protecting the image information security. we first introduce host object into reference path of the classical Mach-Zehnder interferometer to achieve spatial modulation of reference wave, which forms a two-dimensional spatial distribution of reference beam field. The object information is then encrypted and hidden into the main target information in the process of coherent imaging of the target and reference beams in the Fresnel domain for image security; at the same time, the safety object hologram is further compressed and sampled by a single-pixel detector Fewer data to represent the original imaging object. This technology greatly reduces the amount of data collected by the object and can be safely obtained in a pure light system. This is a major breakthrough in holographic imaging methods.Moreover,it is expected to break through the limit of large data volume of the huge size of large-scale holograms such as 3DTV, medical diagnostics, and real-time holographic TV. This article is due to the all-optical means to achieve the feasibility of optical security, and also has important reference significance for future realization of all-optical networks, near-earth and interstellar laser communications links.

     

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