一种基于图像置乱变换的频域图像水印算法

Frequency-Domain Digital Image Watermarking Algorithm Based on Image-Scrambling

为了提高图像水印算法的鲁棒性,提出了一种基于图像置乱变换的自适应图像水印算法,该算法首先将水印图像进行置乱,并选择置换的次数作为密钥,然后采用基于块分类的自适应图像水印算法完成水印的嵌入。通过实验验证,该算法具有较好的隐蔽性和鲁棒性,能有效抵抗剪切等各种攻击操作。

Gives a frequency-domain new digital image watermarking algorithm based on DCT and image scrambling in order to improve the robusmess of the image watermarking. The algorithm scrambles the watermark firstly, and chooses the count of the scrambling as the key, then adopts the adaptive image watermarking algorithm of DCT domain based on the block classification. The experimental results demonstrate that the watermarks are invisible and robust against cut and so on.