基于有限脊波变换的抗几何攻击图像水印

根据脊波变换在方向识别上的优越性,提出了一种基于有限脊波变换的抗几何攻击图像水印方法。该方法先将原始图像进行一级脊波分解,再将经过三级小波分解后的水印嵌入到图像脊波系数中,以实现图像重构。实验结果表明,该方法能够抵抗旋转、缩放和平移、剪切类几何攻击,同时对JPEG压缩、中值滤波、高斯噪声、椒盐噪声等常见的攻击具有良好的鲁棒性。

Image Watermarking Against Geometric Attack Based On Finite Ridgelet Transform

According to the advantage of orientation recognition in finite ridgelet transform domain.A method about image watermarking against geometric attack based on finite ridgelet transform was proposed.First the original image has 1D ridgelet decomposition.Second,after doing 3D wavelet decomposition,the watermarking was embedded to the ridgelet transform coefficience.Then finish the image reconstruction.Experimental results demonstrate the good robustness against rotation,scaling,translation,shearing of geometric attack and JPEG compression,median filter,gaussian noise,salt & pepper noise of common attack.