function??binary_image=binary_test（gray_image）
%image=imread（‘test10.bmp‘）;
%clear?all;
%[fnpn]=uigetfile（‘*.bmp‘‘選擇圖片‘）;
%image=imread（[pnfn]）;
%gray_image=rgb2gray（image）;
[yx]=size（gray_image）;
threshold=graythresh（gray_image）;
%figure（1）imhist（gray_image）;
%I=im2bw（gray_imagethreshold）;
%figure（2）imshow（I）;
%pix=sum（sum（I））;

%[yx]=size（gray_image）;
%threshold=graythresh（gray_image）;
for?i=1:100
????binary_image=im2bw（gray_imagethreshold）;
????pixel_value=sum（sum（binary_image））;
if（pixel_value/（x*y）<0.2||pixel_value/（x*y）>0.3）
????threshold=threshold+0.01;
else
????return
end
end
%figure（3）imshow（binary_image）;
???????????

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2016-04-28?13:34??基于bp和maltab的車牌識別\
?????文件?????????190??2016-06-14?22:54??基于bp和maltab的車牌識別\1.bmp
?????文件?????????190??2016-06-14?22:54??基于bp和maltab的車牌識別\2.bmp
?????文件???????27826??2016-06-14?22:54??基于bp和maltab的車牌識別\20character.mat
?????文件?????????190??2016-06-14?22:54??基于bp和maltab的車牌識別\3.bmp
?????文件?????????190??2016-06-14?22:54??基于bp和maltab的車牌識別\4.bmp
?????文件?????????190??2016-06-14?22:54??基于bp和maltab的車牌識別\5.bmp
?????文件?????????190??2016-06-14?22:54??基于bp和maltab的車牌識別\6.bmp
?????文件???????19519??2016-04-25?19:11??基于bp和maltab的車牌識別\64_bphanzinet.mat
?????文件?????????190??2016-06-14?22:54??基于bp和maltab的車牌識別\7.bmp
?????文件?????????729??2016-04-25?19:11??基于bp和maltab的車牌識別\binary_test.asv
?????文件?????????677??2016-04-25?19:11??基于bp和maltab的車牌識別\binary_test.m
?????文件???????16124??2016-04-25?19:11??基于bp和maltab的車牌識別\bp_net.asv
?????文件????????6444??2016-04-25?19:11??基于bp和maltab的車牌識別\bp_net.fig
?????文件???????16123??2016-04-25?19:11??基于bp和maltab的車牌識別\bp_net.m
?????文件????????2252??2016-04-25?19:11??基于bp和maltab的車牌識別\find_threshold.asv
?????文件????????2216??2016-04-25?19:11??基于bp和maltab的車牌識別\find_threshold.m
?????文件?????????791??2016-04-25?19:11??基于bp和maltab的車牌識別\first_locate.m
?????文件????????1128??2016-04-25?19:11??基于bp和maltab的車牌識別\hanzi.asv
?????文件????????1249??2016-04-25?19:11??基于bp和maltab的車牌識別\hanzi.m
?????文件????????1155??2016-04-25?19:11??基于bp和maltab的車牌識別\hanzitest.asv
?????文件???????33842??2016-04-25?19:11??基于bp和maltab的車牌識別\helpmygui.htm
?????文件???????18176??2016-04-25?19:11??基于bp和maltab的車牌識別\hs_err_pid4596.log
?????文件??????204399??2016-04-25?19:11??基于bp和maltab的車牌識別\IMG_0049.JPG
?????文件??????208103??2016-04-25?19:11??基于bp和maltab的車牌識別\IMG_0054.JPG
?????文件??????230044??2016-04-25?19:11??基于bp和maltab的車牌識別\IMG_0055.JPG
?????文件??????202821??2016-04-25?19:11??基于bp和maltab的車牌識別\IMG_0058.JPG
?????文件??????257520??2016-04-25?19:11??基于bp和maltab的車牌識別\IMG_0063.JPG
?????文件??????198646??2016-04-25?19:11??基于bp和maltab的車牌識別\IMG_0064.JPG
?????文件??????259720??2016-04-25?19:11??基于bp和maltab的車牌識別\IMG_0066.JPG
?????文件??????212706??2016-04-25?19:11??基于bp和maltab的車牌識別\IMG_0068.JPG
............此處省略27個文件信息