基于小波变换的零水印算法

A Wavelet-Based Method of Zero-Watermark

为了实施图像的版权保护,提出了一种基于小波变换的零水印算法。该算法采用经典密码学中的方法嵌入水印。为验证该算法的性能,还对该算法进行了一系列的实验,并且与另一种水印算法的实验结果进行了比较。通过比较发现,该算法对剪切、涂抹、压缩等攻击的鲁棒性远远超过了另一种水印算法。最后对该算法进行了推广,它可以用来隐藏任何数字图像的信息,不仅仅是水印。因此该算法可用于数字图像信息的隐藏。

In order to protect the copyright of the image, this paper brings forward a image non-watermarking method based on DWT, where methods of classical Cryptology is employed. A series of experiments have been cavried out and the results proved that the presented method has much better robustness comparing with another watermark method, and the method is further broaden to hide any other digital image information besides watermark.