摘要
提出了一种基于小波分析的盲图像水印方法,本方法利用小波包分解在图像和音频文件中构造信息冗余,嵌入的水印为二值图像,提取时不需原始信息和水印信息。对比试验结果证明,该方法能够抵抗常见的水印攻击,在经过加噪、平滑、缩放和压缩等信号处理后仍能保持稳健。
A new blind algorithm based on wavelet package transform for embedding a watermark into a digital image and audio signal is proposed in this paper. The watermark used in the algorithm is a visually recognizable binary image. The experimental results show that the algorithm is robust to many operations to signal process, such as filter, compression and so on.
出处
《中国医学物理学杂志》
CSCD
2004年第6期355-357,361,共4页
Chinese Journal of Medical Physics
基金
上海市科委基金资助项目(03DZ19712)
关键词
盲水印
小波分析
blind watermark
wavelet transform
