中文说明：基于空域的脆弱水印算法，该方法最具代表性的是最低有效位（LSB）法，也就是文件中的方法，两个文件分别给出了水印的生成和检测。
English Description：
The most representative of this method is the least significant bit (LSB) method, which is the method in the file. The two files give the generation and detection of watermark respectively.