全光学压缩光学图像隐藏技术

发布时间：2018-11-18 22:29

【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]:In recent years, 3D imaging technology has attracted much attention because of its lifelike perception, and the security of 3D images has been paid more and more attention. Because the data amount of 3D image is very large, the speed of data transmission and processing is very slow, so how to transmit and process 3D image quickly and safely has become the most important problem. A compression optical image hiding technique based on all-optical means is proposed. By using the parallelism of optical technology and the theory of compression perception, the acquisition time and data volume are greatly reduced, which provides the possibility for the secure transmission of 3D images in the future. Firstly, the secret image is embedded into the host image by using an improved Mach-Zehnder interferometer to hide the image. Then the holographic compression imaging is realized by using a single pixel camera to compress the data of the hidden image to a smaller extent. At the receiving end, the secret image is restored well by the compression sensing theory and the specified holographic reconstruction algorithm. The simulation and preliminary experimental results show that the hologram data acquisition can be greatly reduced by using all-optical means and compression sensing theory. It is proved that this scheme can realize optical image transmission safely and efficiently in all-optical networks.
【作者单位】：华南师范大学物理与电信工程学院;
【基金】：广东省自然科学基金(2015A030313384) 广州市科技计划项目(201607010275)
【分类号】：TP309;TP391.41

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