function?bp（）
%use?for?bp?training
I0=pretreatment（imread（‘A.jpg‘））;
I1=pretreatment（imread（‘B.jpg‘））;
I2=pretreatment（imread（‘C.jpg‘））;
I3=pretreatment（imread（‘D.jpg‘））;
I4=pretreatment（imread（‘E.jpg‘））;
I5=pretreatment（imread（‘F.jpg‘））;
I6=pretreatment（imread（‘G.jpg‘））;
I7=pretreatment（imread（‘H.jpg‘））;
I8=pretreatment（imread（‘I.jpg‘））;
I9=pretreatment（imread（‘J.jpg‘））;
I10=pretreatment（imread（‘K.jpg‘））;
I11=pretreatment（imread（‘L.jpg‘））;
I12=pretreatment（imread（‘M.jpg‘））;
I13=pretreatment（imread（‘N.jpg‘））;
I14=pretreatment（imread（‘O.jpg‘））;
I15=pretreatment（imread（‘P.jpg‘））;
I16=pretreatment（imread（‘Q.jpg‘））;
I17=pretreatment（imread（‘R.jpg‘））;
I18=pretreatment（imread（‘S.jpg‘））;
I19=pretreatment（imread（‘T.jpg‘））;
I20=pretreatment（imread（‘U.jpg‘））;
I21=pretreatment（imread（‘V.jpg‘））;
I22=pretreatment（imread（‘W.jpg‘））;
I23=pretreatment（imread（‘X.jpg‘））;
I24=pretreatment（imread（‘Y.jpg‘））;
I25=pretreatment（imread（‘Z.jpg‘））;
P=[I0‘I1‘I2‘I3‘I4‘I5‘I6‘I7‘I8‘I9‘I10‘I11‘I12‘I13‘I14‘I15‘I16‘I17‘I18‘I19‘I20‘I21‘I22‘I23‘I24‘I25‘];
%輸出樣本%
T=eye（2626）;
%%bp神經(jīng)網(wǎng)絡(luò)參數(shù)設(shè)置
net=newff（minmax（P）[8002326]{‘logsig‘‘logsig‘‘logsig‘}‘trainrp‘）;
net.inputWeights{11}.initFcn?=‘randnr‘;
net.layerWeights{21}.initFcn?=‘randnr‘;
net.trainparam.epochs=5000;
net.trainparam.show=50;
net.trainparam.goal=0.0000000001;
net=init（net）;
%%%訓(xùn)練樣本%%%%
[nettr]=train（netPT）;
save（‘ym‘‘net‘）;

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

?????文件????????967??2015-05-13?10:27??A.jpg

?????文件?????221760??2012-11-29?16:35??1.png

?????文件???????1461??2012-12-07?22:06??bp.m

?????文件???????7220??2015-05-13?10:27??chepai.m

?????文件????????538??2015-05-12?16:34??pretreatment.m

?????文件???13733302??2012-12-07?21:50??ym.mat

?????文件???????4674??2015-05-13?10:27??dw.jpg

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

?????????????13969922????????????????????7