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全光学压缩光学图像隐藏技术

A Fully Optical Method for Compressive Optical Image Hiding

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摘要

近年来,三维(3D)成像技术因其逼真的观感而广受关注,随之而来的3D图像的安全问题也逐渐被重视。由于3D图像的数据量非常庞大,导致数据传输处理速度缓慢,因此如何快速并安全地传输处理3D图像成为了首要的问题。提出了一种凭借全光学手段实现压缩光学图像隐藏技术,利用光学技术的并行性以及压缩感知理论大大减少了采集时间和采集数据量,为未来实现3D图像安全传输提供可能。首先通过使用改进的马赫-曾德尔干涉仪将秘密图像嵌入到宿主图像中实现图像隐藏,再利用单像素相机实现全息压缩成像,将隐藏图像的采集数据压缩到更小。在接收端,通过压缩感知理论和指定的全息重建算法,很好地恢复了秘密图像。仿真和初步实验结果表明,使用全光学手段并应用压缩感知理论能够大大减少全息图数据采集量,证明了本方案可安全高效地在全光网络中实现光学图像传输。

Abstract

Recently, because of its realistic perception, the three-dimensional (3D) imaging technology has attracted more and more attention, and the consequent security issues of 3D image are gradually being taken seriously. Because of the huge data volume of 3D image, the speed of data transmission and processing is very slow. The safety and speed of 3D images transmission has become the primary problem. An optical image hiding technique using fully optical means is proposed, which utilizes the parallelism of optical technology and the theory of compressive sensing to greatly reduce the acquisition time and data volume, it provides the possibility of future 3D image secure transmission. Firstly a secret scene or image is embedded into a host image to perform optical image hiding by using a modified Mach-Zehnder interferometer. Then the hidden image is compressed to a much smaller signal data using single-pixel holographic compression imaging. At the received terminal, the hidden image is reconstructed well via compressive sensing theory and a specified holographic reconstruction algorithm. The preliminary experimental results and numerical simulations show that it is effective and suitable for optical image security transmission in the coming all-optical network for the reason of the completely optical implementation and largely decreased holograms data volume.

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中图分类号:TN26

DOI:10.3788/aos201737.1110003

所属栏目:图像处理

基金项目:广东省自然科学基金(2015A030313384)、广州市科技计划项目(201607010275)

收稿日期:2017-05-18

修改稿日期:2017-06-26

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李 军:华南师范大学物理与电信工程学院, 广东 广州 510006
陈思佳:华南师范大学物理与电信工程学院, 广东 广州 510006
雷 苗:华南师范大学物理与电信工程学院, 广东 广州 510006
李娇声:华南师范大学物理与电信工程学院, 广东 广州 510006
李 榕:华南师范大学物理与电信工程学院, 广东 广州 510006
唐志列:华南师范大学物理与电信工程学院, 广东 广州 510006

备注:李 军(1972-),男,硕士,副教授,主要从事光学图像安全、压缩成像、全息成像等方面的研究。

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引用该论文

Li Jun,Chen Sijia,Lei Miao,Li Jiaosheng,Li Rong,Tang Zhilie. A Fully Optical Method for Compressive Optical Image Hiding[J]. Acta Optica Sinica, 2017, 37(11): 1110003

李 军,陈思佳,雷 苗,李娇声,李 榕,唐志列. 全光学压缩光学图像隐藏技术[J]. 光学学报, 2017, 37(11): 1110003

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