基于小波域的灰度图像盲水印算法

A Gray Image Blind Watermarking Algorithm Based on DWT Domain

提出了一种有效的静止图像的自适应盲水印算法。该算法首先对水印图像进行置乱处理,再利用邻居特征平均值法和奇偶判决法将置乱后的水印图像嵌入到DWT变换后的原始图像中,最后对该算法进行了滤波、多种噪声、压缩和灰度转换等抗攻击测试。试验结果表明该算法具有较好的不可见性和抗攻击能力。

In this paper, an effective adaptive watermarking algorithm for still images is porposed. Firstly, the watermark is scrambled in the algorithm, and then it was embedded into the original image transformed in DWT domain by the neighboring symbol＇s mean value method and parity adjugement rule. At the last, the antiattacking test is performed for the algorithm by the filtering, various noise, compression and gray transforming. The experimental results show that the watermarks is found in good invisibility and anti-attack ability.