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资源简介:
MATLAB程序下载——一基于MATLAB的EMD算法的仿真程序。
% license plate recognition - car plate location based on color model
% modified by KouLiangzhi, Oct 10th,2007
clc;
clear;
close all
I=imread('Car.jpg');
[y,x,z]=size(I);
myI=double(I);
%%%%%%%%%%% 统计分析 %%%%%%%%%%%%%%%
%%%%%%%% Y 方向 %%%%%%%%%%
Blue_y=zeros(y,1);
for i=1:y
for j=1:x
if((myI(i,j,1)<=121)&&myI(i,j,1)>=110&&((myI(i,j,2)<=155)&&(myI(i,j,2)>=141))&&((myI(i,j,3)<=240)&&(myI(i,j,3)>=210)))
% 蓝色RGB的灰度范围
Blue_y(i,1)= Blue_y(i,1)+1; % 蓝色象素点统计
end
end
end
[temp MaxY]=max(Blue_y); % Y方向车牌区域确定
PY1=MaxY;
while ((Blue_y(PY1,1)>=5)&&(PY1>1))
PY1=PY1-1;
end
PY2=MaxY;
while ((Blue_y(PY2,1)>=5)&&(PY2<y))
PY2=PY2+1;
end
IY=I(PY1:PY2,:,:);
%%%%%%%% X 方向 %%%%%%%%%%
Blue_x=zeros(1,x); % 进一步确定X方向的车牌区域
for j=1:x
for i=PY1:PY2
if((myI(i,j,1)<=121)&&myI(i,j,1)>=110&&((myI(i,j,2)<=155)&&(myI(i,j,2)>=141))&&((myI(i,j,3)<=240)&&(myI(i,j,3)>=210)))
Blue_x(1,j)= Blue_x(1,j)+1;
end
end
end
PX1=1;
while ((Blue_x(1,PX1)<3)&&(PX1<x))
PX1=PX1+1;
end
PX2=x;
while ((Blue_x(1,PX2)<3)&&(PX2>PX1))
PX2=PX2-1;
end
PX1=PX1+17;
PX2=PX2-1;
PY1=PY1+5;
PY2=PY2-2; % 对车牌区域的修正
Plate=I(PY1:PY2,PX1:PX2,:);
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
figure,imshow(Plate);
m=PX2-PX1;
n=PY2-PY1;
S=ones(n,m);
for j=1:m
for i=1:n
if((Plate(i,j,1)<=121)&&Plate(i,j,1)>=110&&((Plate(i,j,2)<=155)&&(Plate(i,j,2)>=141))&&((Plate(i,j,3)<=240)&&(Plate(i,j,3)>=210)))
S(i,j)=0;
end
end
end
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