抗JPEG压缩的半脆弱水印算法研究  

Semi-fragile watermarking algorithm resisting to JPEG

作　　者：尤晶晶[1] 王韶霞[1] 

机构地区：[1]烟台职业学院信息工程系,山东烟台264000

出　　处：《河南科技学院学报（自然科学版）》2012年第6期82-87,共6页Journal of Henan Institute of Science and Technology(Natural Science Edition)

摘　　要：根据JPEG压缩过程中的两个不变性原理设计了一种半脆弱水印算法.该算法可以接受指定质量因子的JPEG有损压缩对水印图像的处理,以满足半脆弱水印的要求,同时不需要原始水印,而是以图像自身的特征作为水印嵌入到图像中,从而达到可盲检测的目的.仿真实验表明,该算法能对水印图像的被篡改位置进行比较精确的定位,同时具有抗JEPG压缩的特性.A algorithm of semi-fragile watermarking is designed based on the two invariance principles of JPEG compression.The algorithm could accept a specified quality factor JPEG lossy compression on the watermark image processing,and could meet the requirements of semi-fragile watermarking.Also,the algorithm does not require original watermarking image because the character of watermark is embedded in the image,then attach to the purpose of blind detection.Simulation results show that,the algorithm could precise location to the tampering position of watermark image and resistant to JEPG compression characteristics.

关 键 词：半脆弱水印 篡改定位 JPEG压缩 盲检测 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]