基于小波变换的静态图像数字水印matlab的实现最低有效位方法(LSB) ：这是一种典型的空间域数据隐藏算法，L. F. Tumer 与R. G. Van Schyadel等先后利用此方法将特定的标记隐藏于数字音频和数字图像内。该方法是利用原始数据的最低几位来隐藏信息。LSB 方法的优点是有较大的信息隐藏量，但采用此方法实现的数字水印是很脆弱的，无法经受一些无损和有损的信息处理，而且如果确切地知道水印隐藏在几位LSB中，数字水印很容易被擦除或绕过。
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