改进的动态图水印技术编码方案

Improved encoding scheme of dynamic graph watermarking

针对动态图水印性能评测指标之间相互制约的关系,寻找指标之间的平衡点,满足理想水印图的特征条件,结合现有的动态图水印技术编码方案,改进了一种编码方案。该改进方案利用二维PPCT编码纠错能力强、抗攻击性能好的特点以及K基数链表编码率高的优点,引入混合编码的思想,添加指针域,构造多个水印图,对真实水印起到混淆的作用。理论分析和实验结果表明,该改进方案提高了数据率、抗攻击能力和鲁棒性,是一种不错的水印编码方案。

In terms of the restrictions among the performance criteria of dynamic graph-based watermarks,looking for the balance of these criteria,satisfying the characteristics of an ideal watermarking graph,this paper summarized the encoding technique of software watermarking,proposed an improved encoding scheme.It took advantage of the two dimensional PPCT：high error correction capability,good resistance to attack and high date-rate of Radix-K,through importing mix encoding and add point area.The experimental results show that this scheme has high date rate and robustness,optimal overall performance,it＇s a good scheme.