一种基于zigzag扫描的DCT鲁棒数字盲水印算法  

Robust digital blind watermarking algorithm using discrete cosine transform based on zigzag scanning

作　　者：杨战旗 高玉龙[2] 张亚萍[2] 汤永利[2] Yang Zhanqi;Gao Yulong;Zhang Yaping;Tang Yongli(Dept.of Information Engineering,Henan College of Industry&Information Technology,Jiaozuo Henan 454000,China;College of Computer Sciences&Technology,Henan Polytechnic University,Jiaozuo Henan 454000,China)

机构地区：[1]河南工业和信息化职业学院信息工程系,河南焦作454000 [2]河南理工大学计算机科学与技术学院,河南焦作454000

出　　处：《计算机应用研究》2018年第5期1555-1557,共3页Application Research of Computers

基　　金：国家自然科学基金资助项目(61300216);河南省科技厅资助项目(152102410048;142300410147);河南省教育厅资助项目(12A520021;16A520013);河南理工大学博士基金资助项目(B2013-043;B2014-044)

摘　　要：针对提高水印算法的鲁棒性进行研究,提出一种基于zigzag扫描的DCT鲁棒数字盲水印算法。算法对分块后DCT域的中、低频系数进行zigzag扫描得到一维数列,利用每个数列数学范数比值和量化索引调制原理实现数字水印的嵌入,然后通过最小距离公式对水印进行提取。与其他算法相比,实验结果显示该算法能够抵抗多种攻击,具有较好的透明性与鲁棒性。水印提取过程不需要原载体图像,能实现水印信息盲提取。In order to improve the robustness of digital watermarking algorithm,this paper proposed a DCT robust blind digital watermarking algorithm based on zigzag scan.The algorithm performed zigzag scanning on the block DCT low and middle frequency coefficients to obtain one-dimensional sequence,embedded the digital watermarks by the similarity of the mathematical norm ratio and the quantization index modulation principle and extracted by using minimum Euclidean distance.Experimental results confirm the superiority of the proposed technique against common attacks in comparison with other algorithms.Watermarking extraction does not need the host image.

关 键 词：离散余弦变换 量化索引调制 量化步长 数字水印 

分 类 号：TP309.2[自动化与计算机技术—计算机系统结构] TP301.6[自动化与计算机技术—计算机科学与技术]