【摘要】 论文给出一种新的基于离散余弦变换和图像置乱的数字图像水印算法。先将要嵌入到数字图像中的水印图像进行置乱,然后用基于离散余弦变换的算法将其嵌入到数字图像中。试验结果证明,这种算法具有很好的鲁棒性,可以有效地抵抗剪切和JPEG压缩等攻击。更多还原

【Abstract】 The paper gives a new digital image watermarking algorithm based on discrete cosine transform and image scrambling.Firstly,it introduces how to realize digital image scrambling.Secondly,the watermark is embedded.in digital images based on the discrete cosine transforms.Moreover the results of the experiment have proved that the method is enough robust to some image degradation processes such as cropping and JPEG compressing etc.更多还原