基于混沌的图像的数字水印隐藏算法

数字水印技术是进行数字产品版权保护的一种手段。该文提出了一种基于混沌的图像的数字水印隐藏方法。该算法应用混沌系统生成的混沌序列，改变水印的嵌入位置，使得嵌入位置具有随机性，同时综合考虑嵌入水印后的视觉效果，使得像素的改变不会影响图像的不可见性。该方法特征：水印的不可见性好；水印的嵌入和提取过程中需个人的密钥，由于混沌的混沌特性，因此不知该密钥的用户无法正确恢复水印；水印的提取不需要原始图像。计算机仿真结果令人满意。

Digital Watermarking Algorithm of image Based on Chaos

Digital watermarking technology is a kind of method to protect digital products. In this paper, a Digital Watermarking Algorithm of image Based on chaos are proposed. With the approach proposed in this paper , the embedded positions is determined by chaos sequence generated by chaos map, and take into account watermark invisible. The features of this algorithm is: The difference between the watermarked and the original image is invisible; Using a secret key in the procession of retrieving and embedding, The position for embedding is random because the chaos map's chaotic speciality; Retrieval of the embedded watermark does not need the original image. The simulate result is satisfy.