基于可逆数字水印的图像认证新方法  

On a New Image Authentication Method Based on Reversible Watermarking

作　　者：高晓琴[1] 晏勇 唐琦[3] 

机构地区：[1]四川工商职业技术学院,四川都江堰611830 [2]阿坝师范高等专科学校电子信息工程系,四川阿坝623002 [3]西南交通大学远程与继续教育学院,成都610031

出　　处：《西南师范大学学报（自然科学版）》2015年第7期119-123,共5页Journal of Southwest China Normal University(Natural Science Edition)

摘　　要：针对传统算法不能在提取水印后完全地对原始图像进行复原的问题,提出了一种基于可逆数字水印技术的图像认证新方法.该算法将图像分成2个部分,其中一部分用来提取图像特征,而另外一部分则用基于差数扩展的可逆水印算法,将自身块和其他各块的特征嵌入其中.仿真实验结果表明,所提出的水印算法能够完全精确恢复图像,而且在图像信息受到攻击时,该算法可以实现对图像信息恶意攻击的精确定位.To solve the original image restored traditional problems, in which extraction algorithm can＇t be solved very well, a new method for image authentication reversible watermarking technology has been pro- posed. The algorithm divides an image into two parts; one part for extracting image features, while the other part embedded the self-block and other features of each block is used based on the difference between the numbers of extended reversible watermarking algorithm. Simulation experiment results show that the proposed watermarking algorithm can recover completely accurate picture. When the image information is under attack, the algorithm can achieve accurate positioning of the image information to malicious attacks.

关 键 词：图像认证算法 差数扩展 可逆水印 图像复原 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]