小波域图像水印技术

Digital watermark based on DWT

首先讨论小波变换的原理和算法,然后重点研究小波域图像水印技术,并分别介绍灰度水印预处理和自适应小波域图像水印技术。通过观察分析得到,小波域图像水印的可视性强,并具有良好的鲁棒性。

It discusses the little wave region DWT after introducing the principle and algorithm of little wave. Then it introduces little wave region image watermark technology. Through observation and analysis, a conclusion is made that the little wave region image watermark＇s visual effect is obdvions with good robustness.