基于HVS和小波变换的零水印数字图像算法

Zero-Watermark Algorithm Based on HVS and Wavelet Transforming

该文在分析了现有数字水印特点的基础上,提出了一种新的水印方法。该算法利用了零水印和小波变换的特性,并根据图像的视觉特性选择合适的水印嵌入点,在此基础上利用零水印实现信息的隐藏,因为零水印利用图像的重要特征来构造水印信息,而不是修改图像的重要特征,因此能够很好地解决水印鲁棒性和不可见性之间的关系。实验证明,该算法抵抗各种攻击的能力是很好的。

In the paper,after we analyze the digital watermark characters,we propose one new watermark algorithm.The algorithm make use of the characters of wavelet transform and the visual characters of HVS （Human Visual System）, especially we add the zero-watermark to image,because the zero-watermark utilize the important information to construct the watermark,yet do not change the inherence of image.So we can solve the conflict of the watermark robust property and invisible property very well.By experiment,we find the algorithm can resist all kinds of attacks.