一种新的基于非均匀B样条小波变换的数字水印算法  

A New Digital Watermarking Algorithm Based on Non-Uniform B-spline Wavelets Transformation

作　　者：陈甜甜[1] 穆国旺[1] 李彦红[1] 

机构地区：[1]河北工业大学理学院,天津300130

出　　处：《河北工业大学学报》2007年第4期80-85,共6页Journal of Hebei University of Technology

摘　　要：基于非均匀B样条小波变换的特性,提出了一种在图像的中频部分嵌入和提取数字水印的算法.利用该算法可以方便地在图像中嵌入小于原图的任意形状的二值水印,并可实现盲提取.实验表明,该算法具有较强的抗各种常见攻击的鲁棒性.A new algorithm for embedding and extracting watermark in the domain of middle frequency of the carrier images is presented which is based on non-tmiform B-spline wavelet transformation. Using the algorithm binary watermark image of any shape can be embedded into the carrier image, and can be extracted blindly. Examples show that the algorithm is robust against common attacks.

关 键 词：图像处理 数字水印 非均匀B样条小波 鲁棒性 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]