摘要
提出一种基于局部相关匹配的小波变换图像水印方法。该方法利用Arnold变换对水印图像加密,采用相位相关法选取合适的水印嵌入区域,并根据图像纹理的差异在小波的高频和低频系数上分别嵌入水印信息。水印检测时,在嵌入水印的区域提取出多个水印信息,将多个水印信息的加权平均作为检测水印。实验结果表明,该方法嵌入水印的不可见性及抗噪声和压缩的鲁棒性较好。
This paper presented a wavelet transform watermarking method based on local phase correlation.The method used Arnold transform to encrypt the watermark image,and selected proper watermark embedding area with phase correlation method,then embeded watermark information separately to high and low frequency coefficients according to the differences of texture.When checked the watermark,extracted the watermark information from embedding area.The weighted average value of watermark information above as checking watermark.The experimental results demonstrated the good performance of the proposed method in invisibility,anti-noise attacking and anti-compression attacking.
出处
《计算机应用研究》
CSCD
北大核心
2011年第5期1922-1925,共4页
Application Research of Computers
基金
江西省教育厅科技计划资助项目(GJJ08158)
关键词
相位相关
数字水印
ARNOLD变换
小波变换
phase correlation
digital watermarking
Arnold transform
wavelet transform
