摘要： 提出了一种基于信息互补的小波域图像水印算法，该算法结合人类视觉系统特性在图像小波域的两个子频带中以互逆的顺序分别嵌入水印信息。水印提取时通过阈值判别选取两个小波子频带的水印信息进行互补。实验结果表明，该算法对常见的信号处理具有良好的鲁棒性。

关键词: 数字水印, 小波变换, 人类视觉系统

Abstract: An image watermarking method in wavelet domain based on information complementation is presented. According to the characteristics of human visual system, this method embeds watermark into the image's wavelet coefficients of horizontal and vertical sub-bands in a reciprocal order. During the extraction of watermark, a threshold is used to select the information of the tow sub-bands. The experimental results show that the method has a good robustness to resist normal signal processing.

Key words: Digital watermark, Wavelet transformation, Human visual system

中图分类号: 

• TP391.41