基于Zig-Zag扫描与FCM的多小波域水印算法

A watermarking algorithm based on Zig-Zag scanning and FCM multi-wavelet domain

摘要:

提出了一种安全性高，可自适应嵌入的多小波域水印算法。该算法对水印图像进行Zig-Zag扫描后，对形成的一维向量进行相邻像素异或运算并自换位，从而使置乱达到更好的效果，同时根据模糊C均值聚类(FCM)对二层小波变换的中频区域进行分析，自适应地嵌入水印。仿真实验证明，算法对高斯噪声、中值滤波、椒盐噪声、压缩、剪切攻击具有很好的抗攻击能力，并且兼顾了不可见性，实现水印的盲提取。

Abstract:

A watermarking algorithm with high security based on Zig-Zag scan and Fuzzy C-Means(FCM) wavelet domain is put forward. After the watermark image Zig-Zag scanning, the adjacent pixel XOR and transposition are performed on the formed one-dimensional vector, thereby scrambling to achieve better results. The median frequency region for the two layer wavelet is analyzed according to the FCM. The watermark is embedded adaptively. Experiment results show that the proposed algorithm exhibits good attack-resisting ability for Gaussian noise, median filtering, salt noise, compression and shear attack. It takes account of the invisibility as well to realize the blind watermark extraction.