一种基于DCT系数特征的图像盲水印算法

A Blind Watermarking Algorithm Based on Property of DCT Coefficients

利用DCT中频系数接近于0的特征,提出了一种在DCT中频系数中嵌入二值图像水印,以实现盲检的水印方案。实验结果表明,该算法对于常见的图像处理具有较好的鲁棒性。

Through using Property of DCT intermediate coefficients approximately equal to zero, this paper proposes a 2-bit image watermarking embedding algorithm on block DCT intermediate coefficient. The cover image is not needed when extracting watermarking data. The experimental results show that the alporithn has good robustess on conventinal image processing.