基于对角占优矩阵的数字水印算法

Digital Watermarking Algorithm Based on Diagonally Dominant Matrix

提出了一种基于对角占优矩阵的数字水印算法.该算法利用数字图像所对应的非负矩阵,构造了对角占优矩阵,采用伪随机序列作为数字水印,利用对角占优矩阵的性质,使用量化函数的方法进行数字水印的嵌入,恢复水印时不需要原始图像.实验结果表明,这种方法运算速度快,并且具有很好的鲁棒性.

A new digital watermarking algorithm based on diagonally dominant matrix is proposed. The diagonally dominant matrix is constructed by the corresponding nonnegative matrix of the original image. A pseudo-random sequence as digital watermarking is embedded into the built matrix of especial properties by using the scale quantization function. The original image is not needed in the recover progress. Experimental results show that this new algorithm is robust and easy to embed and extract.