function?lpr_loc（）
%?license?plate?recognition?-?car?plate?location?based?on?color?model
%?modified?by?ZHAO?Hui?April?30th2005
I=imread（‘Car.jpg‘）;
[yxz]=size（I）;
myI=double（I）;
%%%%%%%%%%%?RGB?to?HSI??%%%%%%%%
tic???%?測(cè)定算法執(zhí)行的時(shí)間，開始計(jì)時(shí)

%%%%%%%%%%%?統(tǒng)計(jì)分析?%%%%%%%%%%%%%%%
%%%%%%%%?Y?方向?%%%%%%%%%%
Blue_y=zeros（y1）;
for?i=1:y
????for?j=1:x
????????????if（（myI（ij1）<=121）&&myI（ij1）>=110&&（（myI（ij2）<=155）&&（myI（ij2）>=141））&&（（myI（ij3）<=240）&&（myI（ij3）>=210）））?
%?藍(lán)色RGB的灰度范圍
???????????????Blue_y（i1）=?Blue_y（i1）+1;?????%?藍(lán)色象素點(diǎn)統(tǒng)計(jì)??????????
???????????end??
????end???????
end
[temp?MaxY]=max（Blue_y）;????????%?Y方向車牌區(qū)域確定
PY1=MaxY;
while?（（Blue_y（PY11）>=5）&&（PY1>1））
???????PY1=PY1-1;
end????
PY2=MaxY;
while?（（Blue_y（PY21）>=5）&&（PY2???????PY2=PY2+1;
end
IY=I（PY1:PY2::）;

%%%%%%%%?X?方向?%%%%%%%%%%?
Blue_x=zeros（1x）;?????????????%?進(jìn)一步確定X方向的車牌區(qū)域
for?j=1:x
????for?i=PY1:PY2
????????????if（（myI（ij1）<=121）&&myI（ij1）>=110&&（（myI（ij2）<=155）&&（myI（ij2）>=141））&&（（myI（ij3）<=240）&&（myI（ij3）>=210）））?
???????????????Blue_x（1j）=?Blue_x（1j）+1;???????????????
???????????end??
????end???????
end

PX1=1;
while?（（Blue_x（1PX1）<3）&&（PX1???????PX1=PX1+1;
end????
PX2=x;
while?（（Blue_x（1PX2）<3）&&（PX2>PX1））
???????PX2=PX2-1;
end
PX1=PX1-2;?%?對(duì)車牌區(qū)域的修正
PX2=PX2+2;

Plate=I（PY1:PY2PX1-2:PX2:）;
t=toc?%?讀取計(jì)時(shí)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
figureimshow（I）;
figureplot（Blue_y）;grid
figureplot（Blue_x）;grid
figureimshow（IY）;
figureimshow（Plate）;

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????文件??????108279??2004-01-15?05:14??車牌定位\Car.JPG
?????文件????????1605??2014-10-18?11:21??車牌定位\test.m
?????文件??????732379??2014-10-18?11:24??車牌定位\車牌定位.exe
?????目錄???????????0??2015-02-17?09:38??車牌定位\