chepaishibie.rar_交通标识_智能交通管理_智能停车诱导_汽车 交通_车辆调度系统

clc clear filename='car.jpg'; I=rgb2gray(filename); tic [height,width]=size(I); I_edge=zeros(height,width); for i=1:width-1 I_edge(:,i)=abs(I(:,i+1)-I(:,i)); end I_edge=(255/(max(max(I_edge))-min(min(I_edge))))*(I_edge-min(min(I_edge))); [I_edge,y1]=select(I_edge,height,width); BW2=I_edge; SE=stre1('rectangle',[10,10]); IM2=imerode(BW2,SE); IM2=bwareaopen(IM2,20); IM3=imdilate(IM2,SE); p_h=projection(double(IM3),'h'); if(p_h(1)>0) p_h=[0,p_h]; end p_v=projection(double(IM3),'v'); if(p_v(1)>0) p_v=[0,p_v]; end p_h=double((p_h>5)); p_h=find(((p_h(1:end-1)-p_h(2:end))~=0)); len_h=length(p_h)/2; k=1; for i=1:len_h for j=1:len_v s=IM3(p_h(2*i-1):p_h(2*i),p_v(2*j-1):p_v(2*j)); if(mean(mean(s))>0.1) p{k}=[p_h(2*i-1),p_h(2*i)+1,p_v(2*j-1),p_v(2*j)+1]; k=k+1; end end end k+k-1; for i=1:k edge_IM3=double(edge(double(IM3(p{i}(1):p{i}(2):p{i}(3):p{i}(4))),'canny')); [x,y]=find(edge_IM3==1); p{i}=[p{i}(1)+min(x),p{i}(2)-(p{i}(2)-p{i}(1)+1-max(x)),... p{i}(3)+min(y),p{i}(4)-(p{i}(4)-p{i}(3)+1-max(y))]; p_center{i}=[fix((p{i}(1)+p{i}(2))/2),fix((p{i}(3)+p{i}(4))/2)]; p_ratio(i)=(p{i}(4)-p{i}(3))/(p{i}(2)-p{i}(1)); end if k>1 n=0; ncount=zeros(1,k); for i=1:k-1 if(abs(p{i}(1)+p{i}(2)-p{i+1}(2))<height/30&&abs(p{i+1}(3)-p{i}(4))<=width/15) p{i+1}(1)=min(p{i}(1),p{i+1}(1)); p{i+1}(2)=max(p{i}(2),p{i+1}(2)); p{i+1}(3)=min(p{i}(3),p{i+1}(3)); p{i+1}(4)=max(p{i}(4),p{i+1}(4)); n=n+1; ncount(n)=i+1; end end if(n>0) d_ncount=ncount(2:n+1)-ncount(1:n); index=find(d_ncount~=1); m=length(index); for i=1:m pp{i}=p{ncount(index(i))}; pp_ratio(i)=(pp{i}(4)-pp{i}(3))/(pp{i}(2)-pp{i}(1)); end p=pp; p_ratio=pp_ratio; clear pp;clear pp_ratio; end end k=length(p); m=1;T=0.6*max(p_ratio); for i=1:k if(p_ratio(i)>=T&p_ratio(i)<20) p1{m}=p{i}; m+m+1; end end p=p1;clear p1; k=m-1; toc clear edge_IM3;clear x;clear y; figure(1) imshow(I);title('原始图像') figure(2) imshow(IM3);title('灰度膨胀后图像') figure(4) for i=1:k subplot(1,k,i); index=p{i}; imshow(I(index(1)-2:index(2),index(3):index(4)));title('车牌图像') end if(k==1) imwrite(I(index(1)-2:index(2),index(3):index(4)),'cp.jpg'); end