摘要
为提高水印的鲁棒性和安全性,提出了基于图像连通性的自适应水印同步方案.该方案根据图像的连通性得到连通对象,选取较大的连通对象的重心作为水印嵌入的参考点.利用图像的连通性具有拓扑不变性以及图像的重心比较稳定的特性保证水印检测的自适应同步.用作水印嵌入的参考点的高度稳定性,使得该方案不仅对常见图像处理时,而且对全局和局部几何攻击均呈现了较强的鲁棒性.
To improve the robustness and security performances of watermarking, a selfadaptive watermarking synchrorization scheme was proposed. In the scheme, the connected objects are Obtained according to image connectivity, and the gravity centers of bigger objects are selected as the reference points for watermark embedding. Selfadaptive synchronization of watermark detection is ensured by the topological invariability of image connectivity and the stability of its gravity center. The high stablility of the reference points for watermark embedding makes watermarks robust not only under common image processing but also under global and local geometrical attacks.
出处
《西南交通大学学报》
EI
CSCD
北大核心
2005年第6期720-726,共7页
Journal of Southwest Jiaotong University
关键词
水印同步
连通性
鲁棒性
几何攻击
图像处理
重心
watermarking synchrorization
connectivity
robustness
geometrical attack
image processing
gravity center
