up=imread（‘6.bmp‘）;???????????%讀圖像?
low=imread（‘5.bmp‘）;
[low_R]=double（low（::1））;?
[low_G]=double（low（::2））;?
[low_B]=double（low（::3））;?

[MNcolor]=size（up）;?
low_Mx=0;?
for?i?=?1?:?M?
????for?j?=?1?:?N?
?????????low_S?=?[low_R（ij）low_G（ij）low_B（ij）]‘;???%?生成由R，G，?B組成的三維列向量
?????????low_Mx?=?low_Mx?+?low_S;?
????end?
end?

low_Mx?=?low_Mx?/?（M*N）;?%?計算三維列向量的平均值
?
low_Cx=0;?

for?i?=?1?:?M?
????for?j?=?1?:?N?
?????????low_S?=?[low_R（ij）low_G（ij）low_B（ij）]‘;?
?????????low_Cx?=?low_Cx?+?low_S*low_S‘;?
????end?
end

low_Cx?=?low_Cx?/?（M?*?N）-?low_Mx*low_Mx‘;??%?計算協(xié)方差矩陣
[low_Alow_latent]?=?eigs（low_Cx）;?%PCA變換的系數(shù)矩陣特征值
?
for?i?=?1?:?M?
????for?j?=?1?:?N
???????low_X?=?[low_R（ij）low_G（ij）low_B（ij）]‘;?%?生成由R，G，?B組成的三維列?
???????low_Y?=?low_A

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

?????文件?????196662??2010-12-20?21:37??PCA\PCA\5.bmp

?????文件?????196662??2010-12-20?21:37??PCA\PCA\6.bmp

?????文件???????1843??2010-12-27?20:39??PCA\PCA\pca.m

????..A.SH.?????13824??2011-03-30?20:00??PCA\PCA\Thumbs.db

?????目錄??????????0??2011-03-30?20:00??PCA\PCA

?????目錄??????????0??2011-03-30?19:59??PCA

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

???????????????408991????????????????????6