摘要
数字水印技术作为一门有效的多媒体版权保护技术受到越来越多的关注,提出了一种基于小波变换的图像数字水印算法。依据人眼视觉特性,将数字水印信息嵌入到经过小波变换后的图像的高频子带纹理区内,人眼不易察觉,再利用含水印图像和原始图像提取出嵌入的水印。采用多幅图进行实验,结果表明,该数字水印算法具有较好的隐蔽性,而且对常见的图像处理操作攻击具有较好的鲁棒性。
As an effective technique for multimedia copyright protection, digital watermarking technique has drawn more and more attention. An algorithm of image digital watermarking which based on wavelet transformation is proposed. According to the characters of human vision, this algorithm puts the information of digital watermarking into the high frequency district of the image which has been wavelet transformed, so the watermarking can＇t be easily found, then distills the digital watermarking with the help of the original image and the watermarking image. According to the experiment of several images, this watermarking scheme is invisible and has good robustness for some common image processing operations.
出处
《计算机工程与设计》
CSCD
北大核心
2008年第4期1004-1006,1010,共4页
Computer Engineering and Design
基金
江苏省高技术产业发展基金项目(苏发改投资发[2004]674号)
关键词
数字水印
小波变换
人眼视觉
高频子带
纹理子块
digital watermarking
wavelet transformation
human vision
high frequency land
streak block
