基于双重零水印的数据库版权保护

Database Copyright Protection Based on Dual Zero-watermark

数据库零水印具有二义性,可能引起数据库的版权纠纷。为此,提出一种数据库版权图像零水印算法。以零宽度不可见字符作为水印符号,将版权图像嵌入宿主数据库,构造一重数据库零水印,同时使用字符型数据Unicode编码提取二重数据库零水印。实验结果表明,该算法可以提高数据库版权保护能力。

The database zero-watermark has ambiguous, which may lead up to database copyright dispute. Aiming at this problem, this paper presents a novel database copyright image zero-watermark algorithm. The algorithm uses zero width and invisible character as the watermark character, embeds the copyright image into the host database, and establishes a database zero-watermark. At the same time, the Unieode value in character fields is used to extract the other database zero-watermarks. Experimental results show that the dual database zero-watermark can improve the database copyright protection ability.