一种有效的DCT域盲水印算法

本文介绍了一种隐藏二值图像的数字水印算法。在算法中，采用置乱的方法增强了水印的安全性，采用纠错编码的方法增强水印的鲁棒性。该算法在图像的DCT域中完成，在很好的保证了水印的透昵性的前提下，可以很好的抵御JPEG压缩、噪声干扰和中值滤波等攻击。水印嵌入时通过一种类似奇偶量化的方法来完成的，因此可以很好的实现水印的盲提取。

An Effective Blind Watermark Algorithm Based on DCT

This paper presents a novel digital watermarking algorithm for hiding binary image.In this algorithm,shuffle and error-correcting codes are used to strengthen the security and robust of watermark.Based on DCT transform, this algorithm can effectively guarantee the transparent of watermark and endure the attack of JPEG compression, noise and filter, etc.The method used to embed the watermark is like the oddeven quantization method,so the watermark can be extracted without the original image.