摘要
该文提出了一种基于多变换域的多功能水印算法。首先通过量化DCT系数嵌入鲁棒水印以保护版权,然后在提升小波域的最低有效位嵌入脆弱水印以检测篡改。仿真实验结果表明,算法具有良好的不可见性。对于加噪、滤波、JPEG压缩等常规攻击,剪切、缩放等几何攻击有较强的抗攻击能力,并能较好地检测出对图像的细微篡改。
This paper proposes a kind of multifunction watermarking algorithm based on mult-transform-domain. Firstly quantify DCT coefficients to embedding robust watermarking to protect copyright, then embed fragile watermarking in least significant bit （LSB） to detect tampering. Simulation results show that the algorithm has good invisibility. For normal attacks, such as adding noise, filtering, JPEG, etc. , and geometric attacks, such as shear, scaling, etc. , the algorithm has good robustness and can detect the subtle alteration.
出处
《杭州电子科技大学学报（自然科学版）》
2013年第5期130-133,共4页
Journal of Hangzhou Dianzi University：Natural Sciences
关键词
离散余弦变换
提升小波变换
多功能水印
discrete cosine transform
lifting wavelet transform
multifunetlon watermarking
