基于密钥的数字图像水印算法研究

结合二值水印的值及载体图像像素值的奇偶性,采用密钥技术,研究一种有效的小波域数字图像水印算法.采用密钥选择载体图像的嵌入位置,通过对相关系数实施修改,从而达到水印嵌入的目的.仿真实验结果表明,该水印方法具有良好的不可见性,以及具有鲁棒的抗剪切、维纳滤波、不规则色块污染、中值滤波等攻击的能力.

Research on Digital Image Watermarking Algorithm Based on Key

Presents a wavelet domain digital watermarking algorithm by adopting an encryption technology, combining with binary watermarking and parity of original image.The watermarking is achieved by selecting the positions of embedding watermark and modifying the values of the corresponding wavelet coefficients.Experimental results have demonstrated that the watermark is invisible and robust against attack of cutting, wiener filter, interrupted color stain and median filter.