基于图像小波矩特征调制的鲁棒水印

为了提高水印抵抗旋转、剪切等攻击的能力，提出了一种新的基于小波矩特征调制的鲁棒性水印算法。小波矩具有旋转、平移、缩放不变性，且具有小波的多分辨率特性，可以利用水印信息调制载体的低阶小波矩实现信息的隐藏，并且对各阶矩的隐藏能力进行比较。实验表明该算法对剪切、旋转等几何攻击具有很强的抵抗能力，且水印检测不需要原载体的参与。

Digital watermarking algorithm based on wavelet moment modulating

To enhance the capacity to resist attacks such as rotation and cropping,an algorithm based on wavelet moment modulation was proposed.Wavelet moments are invariant to rotation,translation and scaling change of the host image,and they also have wavelet's ability:to observe signal with multi-resolution.An imperceptible watermarking was hidden in a host image by modulating the wavelet moments of the host image.The experimental results in section 3 and section 4 show that this algorithm can effectively resist signal processing attacks,such as filtering,compression,especially rotation and cropping,and the detection does not need the host image.