基于DCT域的数字盲水印技术

提出一种鲁棒性较好的DCT域数字盲水印方案。该方案将汉明编码应用于二值水印图像,同时,采用混沌调制序列伪随机选取嵌入区域,提高水印算法的安全性。通过分析DCT中频特定系数关系,实现水印的盲提取。实验结果表明,该算法对于常见的图像攻击具有较好的鲁棒性,是一种有效的盲水印。

Blind Watermarking Technology Based on DCT Domain

A digital watermarking program of good robustness was presented.The Hamming code was applied to binary watermark image,and chaotic pseudo-random modulation sequence was embedded in selected areas to improve the security of watermarking algorithm.By analyzing the relationship between DCT coefficients of a specific intermediate frequency,the blind watermark extraction was achieved.The experimental results showed that the algorithm was an effective blind watermark which had good robustness against the common i...