一种改进的DWT-SVD域参考水印方案  

Improved reference watermarking scheme in DWT-SVD domain

作　　者：熊祥光[1] 王力[2] 

机构地区：[1]贵州师范大学数学与计算机科学学院,贵阳550001 [2]贵州大学计算机科学与信息学院,贵阳550025

出　　处：《计算机工程与应用》2014年第7期75-79,共5页Computer Engineering and Applications

基　　金：国家自然科学基金(No.61065010)

摘　　要：针对一类SVD域图像水印方案存在过高虚警概率的问题,提出了一种改进的混合DWT和SVD的图像参考水印算法。算法先对载体图像进行n层的离散小波变换,然后随机选取第n层的部分或全部子带形成参考子带,并对参考子带进行SVD分解;将Arnold置乱处理后的水印嵌入到SVD分解后的奇异值矩阵中。实验表明,提出的算法具有较好的透明性和安全性;与其他方案相比,解决了虚警概率问题,且对于大部分的攻击,具有更好的鲁棒性能。For the problem of high false-positive detection rate of a class of Singular Value Decomposition（SVD）based image watermarking scheme, an improved reference watermarking algorithm hybrid Discrete Wavelet Transform（DWT） and SVD is proposed. The host image is applied n-level DWT and selects any or all sub-bands to make reference image, and then performs SVD transform on the reference image. The gray watermarking is preprocessed by using Arnold trans-form and is embedded into the singular value matrix of SVD of reference image. Experimental results show that the pro-posed algorithm is secure and has good transparency. Compared with other schemes, it indicates that the algorithm can solve the problem of false-positive detection and robust against most common attacks.

关 键 词：参考水印 离散小波变换 奇异值分解 虚警错误 鲁棒性 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]