摘要
:本文提出了一种隐藏数字水印的新方法 ,该方法所隐藏的不是传统的序列码或比特流 ,而是将水印作为一幅二值图像来处理 ;并结合人眼视觉模型 (HVS)和图像的DWT多尺度分解来隐藏水印。实验表明这种新方法在降低原始图像变换后视觉失真和提取出的被隐藏水印图像失真两方面都达到较好的效果 ,鲁棒性也较好。
Watermarking is a technique for labeling digital pictures by hiding secret information into the images In this paper,a new method is proposed to hide watermark image in images by multi resolution wavelet decomposition techniques in conjunction with the visual model(HVS) the watermark image are decomposed into multi resolution subband images,the sub band watermarks were embedded into the corresponding sub band host images The simulation experiments show that this robustness method can survive image cropping and image compression,and get better results
出处
《通信学报》
EI
CSCD
北大核心
2000年第6期37-41,共5页
Journal on Communications
基金
国家自然科学基金资助项目! (6 99730 18)
湖北省自然科学基金资助项目!(99J0 0 9)
关键词
数字水印
多尺度分解
小波分解
digital watermark
HVS model
DWT transform
radial frequency
