郑州大学学报（工学版）2012，Vol.33Issue(2)：10-13,18,5.DOI:10.3969/j.issn.1671-6833.2012.02.003
基于分块的小波域图像半脆弱水印认证算法
A Semi-fragile Watermarking Authentication Algorithm Based on Block and Wavelet Domain of Image
摘要
Abstract
A new semi-fragile watermarking authentication algorithm is proposed, the algorithm first divides the image into four blocks, then the feature of each block of image is extracted from low frequency coefficient of three level wavelet transform, and then the feature as the watermark is embedded into corresponding block of image, the four blocks embedded into watermark were combined into a new image. The watermark can be extracted without involving either the host image or the original watermark. Theoretical analysis and experimental results show that the algorithm can be carriers of images of any size, and with good transparency, and it can not only resist non-malicious attacks, such as noise and lossy compression, it can also effectively detect and locate the cut, replaced, and other malicious attacks.关键词
半脆弱水印/分块/小波变换/图像认证Key words
semi-fragile watermark/ block/ wavelet transform/ image authentication分类
信息技术与安全科学引用本文复制引用
武凤翔,岳晓丽,徐江峰..基于分块的小波域图像半脆弱水印认证算法[J].郑州大学学报（工学版）,2012,33(2):10-13,18,5.基金项目
国家自然科学基金资助项目(61071211) （61071211）
