一种基于虹膜水印的数字图像内容认证系统  

An image content authentication system based on iris feature watermarking

作　　者：范科峰[1] 莫玮[2] 裴庆祺[1] 王占武[3] 赵新华[2] 

机构地区：[1]西安电子科技大学计算机网络与信息安全教育部重点实验室,陕西西安710071 [2]中国电子技术标准化研究所,北京100007 [3]北京信息工程学院,北京100101

出　　处：《西安电子科技大学学报》2007年第1期115-121,共7页Journal of Xidian University

基　　金：国家信息产业部电子发展基金资助(fz2004-07);西安电子科技大学研究生创新基金资助课题(创05001);北京市教委科技发展计划项目(KM200610772008)

摘　　要：提出了基于虹膜水印的图像内容认证系统,其基本思想是先进行用户虹膜图像的预处理操作,再将提取出的虹膜代码与噪声可见度函数进行运算生成水印,然后基于人眼视觉系统模型与小波变换方法进行水印自适应嵌入,采用独立分量分析方法进行水印盲提取,经过反变换可得虹膜代码,经过匹配算法实现图像内容所有权人的身份认证.为了更客观地评价水印系统,提出了改进的自适应峰值信噪比度量方法,对图像处理操作具有稳健性.An efficient scheme is presented for protecting the ownership of the digital image content by applying iris feature watermarking. The main idea is as follows. Iris image preprocessing is conducted firstly, which includes iris image de-noising based on wavelet analysis, a coarse- to- precise iris localization, normalization and wavelet-based feature codes extraction, with the watermark generated by the operation between the iris codes and NVF. The second and third steps deal with adaptive iris-based watermark embedding and detecting using the human visual system （HVS） and independent component analysis （ICA）. The final step is authentication between the iris codes transformed from the extracted watermark and the iris database. An adaptive PSNR metric is proposed for the more objective evaluation of the watermarking system. Experimental results show that the algorithm has good performance in dealing with various kinds of attack.

关 键 词：虹膜识别 虹膜水印 图像内容 认证 版权保护 

分 类 号：TN391.41[电子电信—物理电子学]