%0 Journal Article
%T Research on Image Watermarking Algorithm Based on Wavelet Contrast<br>基于小波对比度的图像水印算法研究*
%A XIAO Na
%A KANG Zhi-wei
%A HE Yi-gang
%A LIU Jin
%A <br>肖娜
%A 康志伟
%A 何怡刚
%A 刘劲
%J 计算机应用研究
%D 2007
%I 
%X According to the characteristic of HVS proposed a adaptive watermarking algorithm based on wavelet contrast.First,the host image was divided into non-overlapped blocks with fixed size.The blocks were then classified into two classes-strong textured block and weak textured block.Then each block was decomposed into wavelet coefficients.The wavelet contrast decided both the position which to be embedded and the strength of the watermark.Due to wavelet contrast's indication of the luminance contrast of the image,this algorithm could achieve adaptively embedding.Experimental results prove that the watermark is imperceptible and is robust enough to filtering,additive noise and JPEG compression.
%K watermarking
%K wavelet transform
%K wavelet contrast
%K visual masking<br>数字水印
%K 小波变换
%K 小波对比度
%K 视觉掩蔽
%K 小波对比度
%K 图像水印
%K 算法研究
%K Contrast
%K Wavelet
%K Based
%K Algorithm
%K Image
%K Watermarking
%K 鲁棒性
%K 压缩
%K JPEG
%K 加性噪声
%K 滤波
%K 抵抗
%K 可见性
%K 实验
%K 自适应
%K 明暗对比度
%K 强度
%K 的选择
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=A9D9BE08CDC44144BE8B5685705D3AED&aid=C793235A4E87B8F652D80E0681997BCE&yid=A732AF04DDA03BB3&vid=B91E8C6D6FE990DB&iid=DF92D298D3FF1E6E&sid=B0EBA60720995721&eid=E22B6B8FE86DD8F9&journal_id=1001-3695&journal_name=计算机应用研究&referenced_num=0&reference_num=7