利用Arnold变换和纠错编码实现盲数字水印

提出了一种新的图像数字水印算法．利用纠错编码和Arnold变换对二值水印图像进行预处理，将其作为水印嵌入到原始灰度图像的位平面中，提高了算法的安全性．在嵌入位置的选择上，通过在Arnold置乱过程中对最佳置乱度的计算，生成密钥Key，生成和再现水印嵌入位置，实现了水印的盲提取．仿真和攻击检测试验表明，该算法对常见的噪声干扰和图像处理方法，如高斯噪声、椒盐噪声、JPEG压缩、剪切等具有鲁棒性．

Blind Watermarking Using the Arnold Transform and the Error Correcting Coding

A novel image blind digital watermark algorithm is proposed. When using error correcting coding and Arnold transform, the binary image watermark is processed before embedded into the bitplane of the original gray image. It is effective to improve the security of traditional least significant bits (LSB ) watermarking algorithm. The embed position is chosen by the secret key which is obtained during the course of the best scrambling degree calculation in Arnold transform. This algorithm can also realize blind extraction of digital image watermark. The experimental results show that the watermarks are invisible and robust against noise and commonly used image-processing methods such as Gaussian’s noise, Salt Pepper noise, joint photographic experts group (JPEG) compressing, and crop procession etc