【摘要】 提出了一种基于图像内容的彩色图像水印嵌入算法,嵌入过程在小波变换域进行,置乱后的二值水印嵌入人眼感觉最不敏感的蓝色分量经三级离散小波变换(DWT)后的第三级小波子带系数中,根据不同小波系数对图像内容的贡献不同分别计算每一嵌入位置的嵌入强度因子,使水印的嵌入最大限度地适应宿主图像的内容特征。实验结果证明,算法对常见图像处理攻击具有较强的鲁棒性,可用于图像版权保护。更多还原

【Abstract】 An image content-based watermarking algorithm for color image is proposed.The embedding process is implemented in the wavelet transformation domain.The scrambled binary watermark is embedded into the third DWT sub-band of blue component,which is the least sensitive spectrum for human eyes.The scaling parameter for each DWT coefficient is calculated according to its contribution to the image content.So,the embedded watermark is adaptive to the host image content completely.Experimental results show that this algorithm has good robustness to resist the general image transaction.It can be used to protect the copyright of digital images.更多还原