摘要
充分利用遗传算法的优点,寻找一个最佳的水印嵌入强度,利用离散余弦变换进行水印的嵌入;并根据遗传算法和水印算法的特点,提出了适应度函数值的选择和遗传算法的终止准则方法.实验结果表明,利用遗传算法优化嵌入强度,可以较好地解决鲁棒性和不可见性的矛盾,实现水印的优化嵌入.
An optimal watermark embedding strength is obtained to use the optimization of genetic algorithm, and the watermark is embedded with using DCT. According to the characteristics of genetic algorithm and digital watermark, the methods of selecting fitness function value and ending rule of genetic algorithm are proposed. Experimental results indicate that optimizing the embedding strength based on genetic algorithm can solve the contradiction of robustness and imperceptibility, and implement the optimization embedding of watermark.
出处
《武汉工程大学学报》
CAS
2008年第1期95-97,共3页
Journal of Wuhan Institute of Technology
关键词
数字水印
遗传算法
适应度
优化
digital watermark
genetic algorithms
fitness
optimization
