extract
代码说明：
一种新的水印提取方法，用MATLAB实现，对于做水印的同志们很有帮助哦(A new watermark extraction method, using MATLAB realize, for a watermark to do Oh comrades helpful)
文件列表：
extract
.......\BModule.mat
.......\brightness.raw
.......\brightness1.raw
.......\CA.mat
.......\CB.mat
.......\DeBug.asv
.......\DeBug.m
.......\EmbeddedImage.mat
.......\EmbeddedImage1.mat
.......\embedding.m
.......\extracting.m
.......\GenerateV.m
.......\jpeg50.raw
.......\jpeg75.raw
.......\ModifiedQT.mat
.......\openfile.asv
.......\openfile.m
.......\qimage.raw
.......\QTable.mat
.......\RecoverImage.asv
.......\RecoverImage.m
.......\sample.raw
.......\SetQT.m
.......\ShowPicture.m
.......\VectorMatrix.mat
.......\watermark.raw
.......\watermark1.raw
.......\watermarkold.raw
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