DCT水印算法在抗剪切攻击方面的研究  

Shearing Attack Research Based on DCT Watermarking Algorithm

作　　者：白伟[1] 

机构地区：[1]太原广播电视大学教学处,山西太原030002

出　　处：《太原师范学院学报（自然科学版）》2014年第3期63-66,共4页Journal of Taiyuan Normal University:Natural Science Edition

摘　　要：基于中频系数替换的水印算法在抵抗JEPG压缩攻击以及多种噪声攻击方面表现出较好的鲁棒性,但在抵抗剪切攻击方面表现不足.文章采用两组相同的水印,通过位置变换使得水印信息具有一定的互补性,通过重构,保证图像在水印信息的提取过程中的完整性.通过归一化值的测评,实验结果表现出了较好的性能.Based on intermediate frequency coefficient of replacement watermarking algo- rithm show stronger robustness in resistance to jpeg compression attack and kinds of noise at- tack, but poor performances in terms of resistance to shear attack. Two sets of the same water- mark are adopted in this paper. Through position transformation makes the watermark has a cer- tain complementarity. Through refactoring to ensure the integrity in the process of the extraction of the watermark information. By the normalized value assessment, the experimental results show a good performance.

关 键 词：数字水印 剪切攻击 完整性 鲁棒性 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]