Therefore, problems of the multi-watermark method applied to increase the anti-attack robustness of the watermarking are discussed in this paper.
单个的数字水印算法或方案难以应付多种攻击方法的攻击，为此，文章对应用多水印方法提高水印抗攻击鲁棒性问题进行探讨。
We test the algorithm performance in the cases of single watermark, double watermarks and multi watermarks when different distortions such as JPEG compression, image resizing and cropping are applied.
该文就单水印，双水印以及多水印情形进行了仿真并进行JPEG压缩、图像缩放、剪切等失真测试。
The watermark algorithm based on information substitution can be used to the information hiding of single or multi watermark images.
基于信息替代的水印算法分别可以对单幅和多幅水印图像进行信息隐藏。
Based on the grid multi-scroll Chua's chaotic attractors and Discrete Cosine Transform (DCT) algorithm, a novel digital image watermark algorithm is proposed in this paper.
基于网格状多涡卷蔡氏混沌系统和离散余弦变换(DCT)理论，提出一种改进的数字水印算法。
Based on the grid multi-scroll Chua's chaotic attractors and Discrete Cosine Transform (DCT) algorithm, a novel digital image watermark algorithm is proposed in this paper.
基于网格状多涡卷蔡氏混沌系统和离散余弦变换(DCT)理论，提出一种改进的数字水印算法。
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