matlab答题卡识别程序课件

1、clear allclose allwarning off allfilecounter=input(请输入开始的文件序号：);students=(请输入文件数或学生数：);classscore=;path=C:UsersMBENBENDesktop2016年6月月考答题卡检测195IMG_20160618_;filetype=input(请输入文件类型：,s);questiontotal=30;answer=2,4,3,2,1,2,2,4,1,3,3,4,3,3,1,4,1,2,3,4,4,2,4,1,3,1,4,2,2,2;while filecounter=studentsscore=0

2、;filename=num2str(filecounter);file=strcat(path,filename,.,filetype);answercounter=1;p=imread(file);f=rgb2gray(p);f1=im2bw(f,0.8);fvertical=imrotate(f1,-90,bicubic );fvertical=fvertical(:,1:end-25);biglong,bigwide=size(fvertical);fdownprojection=sum(fvertical);fdownprojectionsmooth=smooth(fdownproje

3、ction,30);verticalfz=max(fdownprojectionsmooth)*9/10;fdownprojectionsmooth(fdownprojectionsmooth=verticalfz-1)=100;plot(fdownprojectionsmooth)verticalruler=;verticalrulercounter=1;while verticalrulercounter bigwide;if fdownprojectionsmooth(verticalrulercounter)=fdownprojectionsmooth(verticalrulercou

4、nter+1)verticalruler=verticalrulercounter,verticalruler;endverticalrulercounter=verticalrulercounter +1;endverticalrulerarray=fvertical(:,verticalruler(2):verticalruler(1);verticalprojection=sum(verticalrulerarray,2);verticalrulerfz=(max(verticalprojection)+min(verticalprojection)/2;verticalprojecti

5、on (verticalprojection=verticalrulerfz-1)=100;verticalcounter=1;verticalruler2=;while verticalcounterbiglongif verticalprojection(verticalcounter)= verticalprojection(verticalcounter+1)verticalruler2=verticalruler2,verticalcounter;endverticalcounter=verticalcounter+1;endrulerarray4=fvertical(vertica

6、lruler2(1):verticalruler2(22),1:verticalruler(2)-40);rulerarray4level=sum(rulerarray4);rulerarray4smooth=smooth(rulerarray4level,30);plot(rulerarray4smooth)rulerarray4fz=max(rulerarray4smooth)*2/3;rulerarray4smooth(rulerarray4smooth=rulerarray4fz-1)=100;ruler4=;ruler4counter=1;ruler4x,ruler4y=size(r

7、ulerarray4);while ruler4counterruler4yif rulerarray4smooth(ruler4counter)=rulerarray4smooth(ruler4counter+1)ruler4=ruler4,ruler4counter;elseruler4=ruler4;endruler4counter=ruler4counter+1;endrulerarray4wide=ruler4(end)-ruler4(1);ruler5=ruler4-rulerarray4wide;ruler6=ruler5,ruler4;verticalruler3= verti

8、calruler2(29:98);ruler3counter=1;r3=0;socre=;while ruler3counter70smalllineoption=fvertical(verticalruler3(ruler3counter):verticalruler3(ruler3counter+1),:); r3=r3+1;if rem(r3,5)=0ruler3counter=ruler3counter+4;elseruler3counter=ruler3counter+2;endoptioncounter6=1;smalloptionarray=;while optioncounte

9、r65optionarray=smalllineoption(:,ruler6(optioncounter6):ruler6(optioncounter6+1);optionvalue=mean2(optionarray);smalloptionarray=smalloptionarray,optionvalue;optioncounter6=optioncounter6+1;endrightoption=max(smalloptionarray);optionm,goal,optionl=find(smalloptionarray=rightoption);if goal=answer(an

10、swercounter)score=score+1;elsescore=score;endanswercounter= answercounter+1;endstudentscore=filecounter*100+score;classscore=classscore, studentscore;jdtleft1=ones(50,1000);jdtleft(:,:,1)=jdtleft1*255;jdtleft(:,:,2)=jdtleft1*0;jdtleft(:,:,3)=jdtleft1*0;jdtright(:,:,1)=jdtleft1*255;jdtright(:,:,2)=jdtleft1*255;jdtright(:,:,3)=jdtleft1*255;jdtred=jdtleft(:,1:1000*filecounter/students,:);jdtwhite=jdtright(:,1000*filecounter/students:1000,:);j