DCT变换域中的自适应图像水印算法  

Adaptive image watermarking algorithm in DCT domain

作　　者：杨艺敏 

机构地区：[1]厦门工学院电子信息工程系,福建厦门361021

出　　处：《微型机与应用》2015年第16期46-48,共3页Microcomputer & Its Applications

基　　金：福建省自然科学基金计划资助项目(A0610022);国务院侨办科研基金项目(06QZR03)

摘　　要：提出了一种基于DCT变换的数字水印算法,该方法能够自适应地选取水印嵌入位置,依据人类视觉特性,合理地分配不同嵌入位置处嵌入的水印强度。另外,结合混沌序列和置乱技术,增强了水印的抗攻击能力。经实验验证,该方法基本上满足不可见性和鲁棒性要求,尤其具有较强的抗JPEG压缩攻击的能力。The article proposes a digital watermarking algorithm based on DCT transform. The method can adaptively select the watermark embedding position. According to human visual properties, it also reasonably allocates the watermark embedding strength in the different position. In addition, the combination of chaotic sequence and scrambling technology enhances the attackde ability. Verified by the experiment, the method basically meets the demand of invisibility and robustness, and especially has stronger ability to resist JPEG compression attack.

关 键 词：图像水印 DCT变换 自适应 LOGISTIC映射 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]