蓝牌白字车牌识别程序+原始图像+能编译看效果

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % 能测定蓝底白字的车牌 % % 图片格式要设定为640*480的jpg % 测试了一下，稍微模糊的图片识别不出来 % 这是在网上找到的 2007-5-19 leki %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% I=imread('Car.jpg'); [y,x,z]=size(I); myI=double(I); %%%%%%%%%%% RGB to HSI %%%%%%%% tic % 测定算法执行的时间，开始计时 %%%%%%%%%%% 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)<=30)&&((myI(i,j,2)<=62)&&(myI(i,j,2)>=51))&&((myI(i,j,3)<=142)&&(myI(i,j,3)>=119))) % 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)<=30)&&((myI(i,j,2)<=62)&&(myI(i,j,2)>=51))&&((myI(i,j,3)<=142)&&(myI(i,j,3)>=119))) 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=PX1-2; % 对车牌区域的修正 PX2=PX2+2; Plate=I(PY1:PY2,PX1-2:PX2,:); t=toc % 读取计时 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% figure,imshow(I); figure,plot(Blue_y);grid figure,plot(Blue_x);grid figure,imshow(IY); figure,imshow(Plate);