files?=?dir（‘/media/yann/CAS-Yann/txt/txt1‘）;
lfiles?=?length（files）;
for?i=3:lfiles
????%read?file?information?in?cell?C
????filename?=?files（i）.name;
????jpgfilename?=?strcat（filename（1:end-4）‘.jpg‘）;
????fid=fopen（filename）;
????C=textscan（fid‘%s‘）;
????
????%get?length?of?C?in?l
????l=length（C{11}）;
????
????%get?the?number?of?tank?in?one?image
????numTank=l/5;
????
????%new?txt?file?and?open?file
????newfilename=strcat（‘/media/yann/CAS-Yann/txt2/‘‘output.txt‘）;
????fp=fopen（newfilename‘a‘）;
????for?j=1:numTank
????????%get?coordination?str?and?tank?type
????????xminstr=C{11}（（j-1）*5+11）;
????????yminstr=C{11}（（j-1）*5+21）;
????????xmaxstr=C{11}（（