| 摘要: |
| 在研究双随机相位加密和数字水印技术的基础上，提出了一种新的基于菲涅耳变换
的盲信息隐藏方法。该方法将待隐藏水印信息经过透镜组微缩或放大成像后，利用随机相位
板进行随机相位加密,然后离轴记录其像全息图像，通过编码将其以适当强度嵌入到原始宿
主图像中，从而实现盲信息隐藏。理论分析和仿真实验表明：该方法对JPEG有损压缩、图像
剪切、噪声污染、图像旋转、中值滤波等具有一定的抵抗能力，且具有一定安全性
、鲁棒性和不可见性，对于提高传输信息的隐蔽性具有重要意义。 |
| 关键词: 信息光学 信息隐藏 数字水印 菲涅耳变换 |
| DOI： |
|
| 基金项目:江苏省电子产品装备制造工程技术研究开发中心开发课题（SZKT
08-007）；淮安市工业支撑项目(HAGZ2020011) |
|
| Blind information hiding technique based on Fresnel diffraction transforms |
| ZHOU Lei,SHEN Su |
| () |
| Abstract: |
| A new Fresnel holographic watermark hiding method is proposed based o
n the double-random phase encoding method and digital watermark technology. The
hidden information magnified or minified by lens is modulated by a random phase
mask and superposed by a reference wave, which gives us an encrypted Fresnel hol
ogram. The encrypted Fresnel hologram is embedded with proper strength into host
image through code encryption, and thus blind information hiding is realized.
Theoretical analysis and computer simulation show that it is robust to JPEG comp
res
sing, cropping, Gaussian noise, image rotation, median filter and so on. Therefo
re, it not only has the characteristics of security, robustness and invisibility
，but also is significant for improving the transmission of hidden informat
ion. |
| Key words: information optics information hiding digital watermark Fresnel tansform |
