function?feature?=?feature_lattice（img）
%?輸入:黑底白字的二值圖像。輸出：35維的網格特征
%?======提取特征，轉成5*7的特征矢量把圖像中每10*10的點進行劃分相加，進行相加成一個點=====%
%======即統計每個小區域中圖像象素所占百分比作為特征數據====%
for?i=1:length（img）;
bw2=im2bw（img{i}graythresh（img{i}））;
bw_7050=imresize（bw2[7050]）;
for?cnt=1:7
????for?cnt2=1:5
????????Atemp=sum（bw_7050（（（cnt*10-9）:（cnt*10））（（cnt2*10-9）:（cnt2*10））））;%10*10box
????????lett（（cnt-1）*5+cnt2）=sum（Atemp）;
????end
end
lett=（（100-lett）/100）;
lett=lett‘;
feature（:i）=lett;
end

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

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_1.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_10.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_100.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_101.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_102.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_103.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_104.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_105.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_106.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_107.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_108.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_109.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_11.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_110.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_111.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_112.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_113.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_114.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_115.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_116.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_117.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_118.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_119.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_12.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_120.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_121.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_122.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_123.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_124.bmp

?????文件???????1862??2006-10-13?18:31??mnist-bp\data\0\0_125.bmp

............此處省略5010個文件信息