function?NC=nc（wv）
%------------------------計算兩個矩陣的相似度系數----------------------------
%------------------------NOTES---------------------------------------------
%?Written????:??30/04/07
%?Contact????:?zxxyj0506@sina.com
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
[wrowwcol]=size（w）;
[vrowvcol]=size（v）;
if?wrow<1||wcol<1||vrow<1||vcol<1
????error（‘輸入有誤--------維數不能小于一‘）;
elseif?wrow~=vrow||wcol~=vcol
????error（‘輸入矩陣維數不相等！‘）;
end
NC=sum（sum（w.*v））./（sqrt（sum（sum（w.*w）））.*sqrt（sum（sum（v.*v））））;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2019-03-08?22:48??DCT\
?????文件??????148534??2019-03-06?08:29??DCT\gaussian.bmp
?????文件????????2678??2019-05-20?21:01??DCT\getmark.bmp
?????文件??????148534??2002-11-13?13:53??DCT\lena.bmp
?????文件?????????382??2010-05-05?17:35??DCT\mark.bmp
?????文件?????????576??2010-05-09?11:15??DCT\NC.m
?????文件?????????964??2010-05-11?14:35??DCT\PSNR.m
?????文件???????28160??2010-05-11?15:06??DCT\Thumbs.db
?????文件??????148534??2019-05-20?21:01??DCT\whitenoise.bmp
?????文件??????148534??2019-05-20?21:00??DCT\withmark.bmp
?????文件????????4150??2019-03-06?08:28??DCT\zongchengxu.m