摘要
针对云平台下的数据安全和隐私保护问题,提出了一种纯光域下基于马赫-曾德尔干涉仪的具有水印嵌入特征的全息成像方法。当两幅图像(水印图像和宿主图像)在马赫-曾德尔干涉仪中发生菲涅尔衍射时,其产生的衍射波以干涉条纹的形式记录在CCD上,该衍射图案实现了将水印图像隐藏在宿主图像中的目的。由此该全息成像系统可以获得2D/3D场景中经水印处理的图像或视频。数值仿真和初步实验结果表明该方法是有效的,由于采用全光方法实现,所以该方法适用于因特网和未来全光网络中的2D/3D图像或视频的版权保护。
In order to solve the problem of data security and privacy protection in the cloud platform,a holographic imaging method with the watermark-embedded feature in optical domain using a Mach-Zehnder interferometer（ MZI） has been proposed. After two images（ watermark image and host image） experiencing Fresnel diffraction on the MZI,the diffraction waves were registered as interference patterns on the CCD plane,which resembled a Fresnel diffraction pattern of the host image for the goal of the hiding the watermark into the host image,and then the holographic imaging system can get a watermarked image/video for 2D or 3D scenes. Numerical simulations and preliminary experimental results and numerical simulations show that it is effective and suitable for the 2D or 3D image/video copyright protection both in the Internet and the future all-optical network for the reason of the completely optical implementation.
出处
《激光杂志》
北大核心
2017年第3期126-129,共4页
Laser Journal
基金
广东省自然科学基金(2015A030313384)
广州市科技计划项目(201607010275)
关键词
图像水印
全息成像
相移干涉
数据安全
纯光域
image watermarking
holographic imaging
phase-shift interference
data security
full optical domain
