基于非均匀B样条小波的图像水印算法  

Digital image watermarking algorithm based on non-uniform B-spline wavelets transformation

作　　者：穆国旺[1] 陈甜甜[1] 赵罡[2] 李彦红[1,3] 

机构地区：[1]河北工业大学理学院,天津300130 [2]北京航空航天大学机械学院,北京100083 [3]河北建筑工程学院,河北张家口075024

出　　处：《计算机工程与应用》2007年第30期79-82,共4页Computer Engineering and Applications

基　　金：国家自然科学基金(the National Natural Science Foundation of China under Grant No.60603089)。

摘　　要：提出了一种基于非均匀B样条小波变换的数字水印嵌入与提取算法,并通过实验分析了其鲁棒性。由于利用非均匀B样条小波对图像进行分解可以得到小于原图的任意大小的低分辨子图,因而利用方法可以方便地嵌入小于载体图像的任意大小的二值水印,并可以盲提取。实验结果表明,该算法具有较强的抗各种常见攻击的鲁棒性。An algorithm for embedding and extracting watermark into digital images based on non-uniform B-spline wavelet transformation is presented,and the robustness is discussed by experiment.Because low resolution sub-image of arbitrary size that is smaller than original image can be acquired by non-uniform B-spline wavelet decomposition,any binary watermark image which is smaller than carrier one can be embedded conveniently,and can be extracted blindly.Experiments show that the algorithm is robust against common attacks.

关 键 词：计算机应用 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]