摘要
该文基于QSWT提出了一个数字图像水印的算法,该算法针对水印嵌入子带的选取、子带阀值的计算、QSWT的构造、水印的嵌入和提取都给出了相应的策略。实验证明算法对常用的图像处理攻击如JPEG压缩、低通滤波、剪切、加噪和旋转等攻击具有较好的鲁棒性和不可见性。
In this paper,a digital watermark algorithm based on the qualified significant wavelet tree （QSWT） is proposed.This algorithm presents corresponding strategy to select embedded subband for watermarking,calculate the subband threshold,construct the QSWT,embed and extract the watermark.The experiment results show that the algorithm provides high robustness and imperceptibility against the original image process attacks such as JEPG compression,lowpass filter,cropping,noise and rotating etc.
出处
《计算机工程与应用》
CSCD
北大核心
2006年第2期81-83,共3页
Computer Engineering and Applications
关键词
DWT
QSWT
数字水印
鲁棒性
Discrete Wavelet Transform（DWT）,Qualified Significant Wavelet Tree（QSWT）,digital watermark,robustness
