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一种抗几何攻击的数字图像零水印方案
引用本文:张伟东,端木春江,李均波.一种抗几何攻击的数字图像零水印方案[J].计算机与现代化,2011(2):14-17,36.
作者姓名:张伟东  端木春江  李均波
作者单位:浙江师范大学数理与信息工程学院,浙江,金华,321004
基金项目:浙江省自然科学基金,钱江人才计划基金
摘    要:提出一种基于时间戳和图像整体特征的零水印方案。该方案根据原始图像生成图像特征矩阵,再将水印图像拓展为图像特征矩阵大小,并将拓展与混沌加密后的水印图像与图像特征矩阵执行异或操作。然后,保存异或操作的结果以作为密钥来检测水印。同时,采用水印拓展嵌入与图像归一化检测的方法,使得图像水印具有较强的抗旋转与剪切攻击的能力。实验表明,所提出的方案在对图像的常规处理及几何变换下具有良好的鲁棒性,具有可行性和实用性。

关 键 词:图像水印  零水印  归一化

A Digital Image Zero-watermarking Scheme for Resisting Geometric Attacks
ZHANG Wei-dong,DUANMU Chun-jiang,LI Jun-bo.A Digital Image Zero-watermarking Scheme for Resisting Geometric Attacks[J].Computer and Modernization,2011(2):14-17,36.
Authors:ZHANG Wei-dong  DUANMU Chun-jiang  LI Jun-bo
Affiliation:(College of Mathematics Physics and Information Engineering,Zhejiang Normal University,Jinghua 321004,China)
Abstract:This paper presents a zero-watermarking scheme based on the overall features of the image and timestamp.Firstly,an image feature matrix is generated according to the original image.Then the watermark image is expanded to the size of the image feature matrix.After that,the XOR operation is carried out for the image feature matrix and the expanded,and encrypted watermark image.This operation result is saved as a key to detect the watermark.At the same time,the scheme employs the techniques of the watermark embedding with image expansion,and the normalized image detection,so that the image has a strong resilience for rotation and shearing attacks.Experiments result show that the proposed scheme is robust to the attacks of normal image processing ways and geometric transforms,and thus this schme is feasible and practical.
Keywords:image watermarking  zero-watermarking  normalized
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