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
????

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????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

?????目錄??????????0??2010-04-11?15:56??SVD_DWTimage

-----------?---------??----------?-----??----

????????????????46863????????????????????12