中文说明：实现抗各种攻击的matlab数字水印，尤其是几何攻击，包括剪切、旋转。有嵌入，提取，攻击，检测过程。
English Description：
Matlab digital watermarking is implemented to resist all kinds of attacks, especially geometric attacks, including cutting and rotation. There are embedding, extraction, attack, detection process.