项目名称: 变换域可逆关系数据库水印研究
项目编号: No.61262076
项目类型: 地区科学基金项目
立项/批准年度: 2013
项目学科: 自动化技术、计算机技术
项目作者: 姜传贤
作者单位: 桂林理工大学
项目金额: 43万元
中文摘要: 数据库作为信息领域的基础设施,数据库存储信息蕴藏着巨大的潜在应用价值,如何保护这些关系数据库数据的版权和完整性是至关重要的。为了增强可逆水印的鲁棒性和不可见性,我们以关系数据库的各种常见操作和特定数据库本身的特殊要求为出发点,利用变换域技术的优势,研究变换域可逆关系数据库水印。通过评估水印对关系数据库属性值和变换域的影响,我们建立适合变换域的关系数据库溢出预防机制,保证算法的可逆性;建立可逆关系数据库水印隐藏模型,实现变换域技术与关系数据库的有机结合;最后我们将集成阶段性研究成果,设计一种鲁棒性和不可见性好的,适合特定关系数据库特点和应用背景的版权及完整性保护机制及其实现算法,并对算法的性能进行建模分析与评价。
中文关键词: 数据库水印;可逆数据库水印;整数小波变换;数值型属性;可逆水印
英文摘要: Database as the field of information infrastructure, it has a huge potential value, and how to protect copyright and integrity of the relational database data is crucial. On the basis of the common database operation and database special requirements, we present a novel transform domain reversible relational database watermarking scheme to improve the robustness and invisibility of the reversible watermarking, by using the advantages of transform domain technology in multimedia watermarking field. By evaluating the change of database transform domain coefficients on attribute value of relational database,the overflow prevention mechanism of a suitable relational database based on transform domain technology is established to obtain the reversibility of watermarking.The reversible relational database watermarking hiding model is proposed to achieve the organic combination of the transform domain technology and relational database.By the above achevements, the reversible relational database watermarking algorithm based on transform domain technology and vector space model is proposed. Finally,We uses a combination of simulation and experimental methods to evaluate the proposed model, the algorithms and mechanisms.
英文关键词: database watermarking;reversible database watermarking;integer wavelet transform;Numeric attribute;reversible watermarking