摘要
文章分析了图像内容认证方式和常用篡改检测定位方法,设计出基于图像四叉树分解的认证水印算法,以四叉树分解的图形信息作为水印图像用于篡改定位。实验证明,该方法在保持图像视觉质量的前提下,能够有效抵抗常规的图像处理操作,对恶意攻击进行多区域篡改检测和准确定位。
Analyzed the manners of content-based image authentication and methods of tamper location, and proposed a watermarking algorithm for image authentication based on image quad-tree decomposition. The graphical result ofquad-tree decomposition has been used to be watermark image and .help to find out the tampered areas. Experiment result shows that this method can resist common image processing and also detect and locate evil intentioned attacks on the precondition of holding the visual quality of images.
出处
《信息网络安全》
2012年第11期13-16,共4页
Netinfo Security
基金
国家自然科学基金项目[61062002
61064011]
甘肃省自然科学基金项目[0803RJZA024]
关键词
图像认证
数字水印
四叉树分解
篡改定位
image authentication
digital watermarking
Quad-tree decomposition
tamper location
