SVD_DWT水印的嵌入和提取

SVD奇异值分解 DWT小波变换 水印嵌入和提取 Arnold置乱

function wa=arnold（wwrowkey）
wa=w;
for k=1:key
    for x=1:wrow
        for y=1:wrow
             x1=x+y;
             y1=x+2*y;
             if x1>wrow
                 x1=mod（x1wrow）;
             end
             if y1>wrow
                 y1=mod（y1wrow）;
             end
             if x1==0
                 x1=wrow;
             end
             if y1==0
                 y1=wrow;
             end
             wa（x1y1）=w（xy）;
        end
    end
     w=wa;
end
    

 属性            大小     日期    时间   名称
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     文件        505  2009-11-07 10:26  SVD_DWTimage\arnold.m

     文件       3404  2009-11-08 13:23  SVD_DWTimage\attackf.jpg

     文件        256  2009-11-07 10:26  SVD_DWTimage\check_arnold.m

     文件        961  2009-11-08 12:51  SVD_DWTimage\extract.asv

     文件        961  2009-11-08 13:04  SVD_DWTimage\extract.m

     文件      32087  2009-11-07 21:14  SVD_DWTimage\Lena.jpg

     文件        223  2009-11-07 10:26  SVD_DWTimage\nc.m

     文件        650  2009-11-07 10:26  SVD_DWTimage\psnr.m

     文件        574  2009-11-07 10:26  SVD_DWTimage\suda64.bmp

     文件       3627  2010-04-16 20:20  SVD_DWTimage\svddwt.asv

     文件       3615  2010-03-25 22:17  SVD_DWTimage\svddwt.m

     目录          0  2010-04-11 15:56  SVD_DWTimage

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