基于提升小波和纠错编码的复合型盲水印技术  

Combined Blind Watermark Scheme Based on Lifting Wavelet and ECC

作　　者：杨厚俊[1] 崔雪英[1] 范延滨[1] 

机构地区：[1]青岛大学信息工程学院,青岛266071

出　　处：《计算机工程》2007年第14期142-144,147,共4页Computer Engineering

摘　　要：提出了一种改进的复合型水印嵌入方法,引入了通信中的纠错编码技术,在很大程度上增强了鲁棒水印的鲁棒性。两类水印均实现了盲提取,且算法是公开的。与改进前的算法相比较,该算法中的鲁棒性水印对图像增强、几何剪切、马赛克等常见攻击,尤其是对局部区域篡改、JPEG压缩的抵抗能力有了明显的改善。同时,脆弱性水印不仅能判断图像的真实性,还能够准确、直观地定位篡改位置。An improved combined watermarking scheme for image authentication and protection is proposed. By utilizing error correction code, the robustness of robust watermark is improved, This algorithm is a public （watermarking scheme） and the two kinds of watermarks can be retrieved without knowing the original image. Compared with others schemes, the ability to resisting all kinds of tamper is improved. Meanwhile, besides telling whether an image has been tampered, the fragile watermark can reflect the distortion status truly and intuitively.

关 键 词：复合型水印 提升小波变换 纠错编码 盲提取 

分 类 号：TP309.2[自动化与计算机技术—计算机系统结构]