一种新的关系数据库水印算法  

A NEW RELATIONAL DATABASE WATERMARKING ALGORITHM

作　　者：范萌萌[1] 李建民[1] 林振荣[1] 

机构地区：[1]南昌大学信息工程学院,江西南昌330031

出　　处：《计算机应用与软件》2015年第6期249-251,303,共4页Computer Applications and Software

基　　金：江西省科技计划项目(20122BBE500049);江西省教育厅科技项目(GJJ12048)

摘　　要：在数据库中嵌入水印信息是实现对数据库版权保护的一种有效手段。提出一种基于混沌序列的数据库水印算法。首先将可证明数据库版权的图像进行预处理,提取图像的边缘信息,形成二进制比特流的水印信息等待嵌入。然后记算法标记元组,使数据库元组具有唯一的标识,通过混沌序列根据元组标识选择水印信息在数据库中的嵌入位置,从而提高水印的隐蔽性与分散性。最后,通过Matlab进行仿真实验,证明了此算法具有良好的不可见性和鲁棒性。To embed watermark information into database is an effective means for implementing the copyrights protection on database.We present a chaotic sequence-based database watermarking algorithm.First,it preprocesses the images with provable database copyrights,and extracts the edge information of the image to form a binary bit stream as the watermark information to be embedded;Secondly,it marks the tu-ple by labelling algorithm and this makes the database tuple have unique identity.Then it selects the embedding position of the watermark in-formation in database through chaotic sequence and according to tuple identifier,thus the concealment and dispersive property of the watermark are improved.Finally,simulation experiment is done through Matlab,it proves that this algorithm has good invisibility and robustness.

关 键 词：数据库水印 版权保护 标记算法 混沌序列 边缘信息 鲁棒性 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]