计算机应用研究2011，Vol.28Issue(5)：1937-1939,3.DOI:10.3969/j.issn.1001-3695.2011.05.097
具有自适应性的半脆弱数字水印算法
Self-adaptive semi-fragile digital watermarking algorithm
摘要
Abstract
In order to solve the contradiction between robustness and vulnerability of digital watermarking algorithm, this paper proposed a new self-adaptive semi-fragile digital watermarking method, with emphasis on digital watermarking embedding algorithm.By using improved low-pass filter, this algorithm adjusted gray value of middle pixel and changed gray-value differential of two terminal to embed the digital watermark.The experimental results show that this algorithm has strong robustness on all JPEG compression of Photoshop and has vulnerability for all geometric transformation malicious attacks.And from the extracted watermark, it can judge the characteristics of malicious attacks, such as types, extent and region.This algorithm shows good adaptability.关键词
数字水印/半脆弱/低通滤波器/灰度差分/梯度阈值/自适应性Key words
digital watermarking/ semi-fragile/ low-pass filter/ gray-value differential/ gradient threshold/ self-adaptive分类
信息技术与安全科学引用本文复制引用
樊永良,张会敏,张云龙..具有自适应性的半脆弱数字水印算法[J].计算机应用研究,2011,28(5):1937-1939,3.基金项目
河南省教育厅科技攻关资助项目(2010C510016) （2010C510016）
