摘要
为实现图像完整性认证,在分析现有各种脆弱水印算法的基础上,一种新的变换域脆弱水印算法被提出.该算法利用离散余弦变换(DCT)系数查表生成水印,嵌入的水印不可见性好,水印图像能有效检测各种攻击,具有良好的认证效果.此外该算法适用于硬件实现,且能方便地嵌入到现有的JPEG压缩器中,具有速度快、面积小的特点.
In order to authenticate the image integrality,a new and effective fragile watermarking algorithm is proposed based on the analysis of previous watermarking algorithm.Watermark in this algorithm is generated by using DCT coefficients via a look-up table.By using this algorithm,invisibility feature of watermark and anti-attack ability of the marked image are both greatly improved.Moreover,the proposed algorithm can not only be easily embedded into JPEG,but is very suitable for the hardware implementation.
出处
《电子器件》
CAS
2007年第2期546-549,共4页
Chinese Journal of Electron Devices
