基于图像特征区域的加密全息水印算法

孙刘杰; 李晨璐

引用本文:

【打印本页】【下载PDF全文】【查看/发表评论】【EndNote】【RefMan】【BibTex】

←前一篇|后一篇→

过刊浏览高级检索

本文已被：浏览 2457次下载 82次	码上扫一扫！
分享到：微信更多字体:加大+\|默认\|缩小-
基于图像特征区域的加密全息水印算法
孙刘杰, 李晨璐
上海理工大学, 上海200093

摘要:

针对图像的特征区域,提出了一种变换域的加密全息水印算法。根据K-均值聚类思想,将图像分为前、后景区特征区域,用双随机相位调制为全息水印加密,提高水印的安全性;通过DCT 变换,在变换域中将加密的全息水印嵌入中频系数,兼顾了人眼的视觉特性和水印的鲁棒性,且属于盲水印算法。实验结果表明,该水印算法能够抵抗常见的各种攻击,重建水印清晰、有效,水印具有极强的隐蔽性、鲁棒性和安全性。

关键词: 加密全息 K-均值聚类特征区域离散余弦变换

DOI：

分类号:TS853+ . 6; TS865

基金项目:新闻出版总署“数字印刷工程研究中心冶开放基金项目:印刷品防伪标识技术研究(10-00-309-000)

Encrypted Holographic Watermark Algorithm Based on Image Feature Area

SUN Liu-jie, LI Chen-lu

University of Shanghai for Science and Technology, Shanghai 200093, China

Abstract:

A new encrypted holographic watermark algorithm based on image feature area in transform domain was proposed. The host image was separated into foreground and background areas based on K-means clustering, and the safety of watermark was improved by using double random phase encryption. Through DCT, the encrypted holographic watermark was embedded into middle frequency coefficients, which both suits the HVS and robustness, and it is a blind watermark algorithm. Results showed that this algorithm can resist all kinds of attacks; the reconstructed watermark is clear. It was concluded that the watermark has strong invisibility, robustness and safety.

Key words: encrypted hologram K-means clustering feature area DCT