摘要
提出了一种以数字全息为基础的数字水印技术,实现了在原始图像中嵌入数字全息水印.考虑到传统的数字全息水印提取过程简单、易受攻击,为了提高水印信息的安全性,对传统的方法进行了改进.采用了图像部分加入的方法,将水印添加位置、水印图像大小和水印添加位置边缘像素作为水印提取密钥.实验证明,运用这种方法添加的水印具有较高的安全性.
A new Hologram Watermarks Technique Based on Image Partly Embedding is presented. The digital holographic watermark is embedded into an original image. As the tradition hologram watermark technique is easy to be picked up and be attacked, in order to enhance its security, some improvements were made to the tradition method, the watermark is embedded in part of the image. And the position of the watermark embedded, the size of the watermark, the pixel of edge of the digital holograph are used as security lock. The experimental results indicate that this method is safer.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2008年第4期740-744,共5页
Acta Photonica Sinica
关键词
数字全息
数字水印
傅里叶变换
信息安全
Digital holograph
Digital watermark
Fourier transform
Information security
