車牌檢測程序及報(bào)告實(shí)驗(yàn)報(bào)告.doc

車 牌 檢 測班級： 姓名： 學(xué)號：一、實(shí)驗(yàn)?zāi)康能嚺茩z測的數(shù)字識別二、實(shí)驗(yàn)過程1、先將車輛圖片讀入。2、將圖片進(jìn)行預(yù)處理，手動(dòng)輸入車牌位置坐標(biāo)。3、提取車牌圖像，進(jìn)行自動(dòng)閾值和二值化處理。4、圖像按字符分割，并且寫入到固定的文件夾中。5、將車牌中的數(shù)字信息重新讀入，進(jìn)行模版匹配。6、利用最小距離法，識別車牌的數(shù)字信息并輸出。三、具體程序clear;clc; im=imread(c:usersccjdesktop1.jpg);im_gray=rgb2gray(im);imagesc(im_gray);colormap(gray); m0=input(請輸入左頂角車牌x坐標(biāo)：);n0=input(請輸入左頂角車牌y坐標(biāo)：);m1=input(請輸入右下角車牌x坐標(biāo)：);n1=input(請輸入左頂角車牌y坐標(biāo)：); im_plate=im_gray;top=m0;bottom=m1;left=n0;right=n1;im_plate=im_gray(top:bottom,left:right);figure;imshow(im_plate); %imwrite(im_plate,d:program files圖像/plateplate3.bmp,bmp); %i=imread(d:program files圖像plateplate3.bmp);%i=rgb2gray(i);i=im_plate;x y=size(i);s=sum(sum(i);s=s/(x*y);im_bi=is;for k=1:5; im1=double(im_bi).*double(i); im2=double(abs(1-im_bi).*double(i); s1=sum(sum(im1)/sum(sum(im_bi); s2=sum(sum(im2)/sum(sum(abs(1-im_bi); s=(s1+s2)/2 endi=is;figure;imshow(i); mask=ones(1,3);p=imclose(i,mask);%標(biāo)記l,num=bwlabel(p);t=100;%設(shè)定面積閾值參數(shù)for i=1:num r,c=find(l=i); if length(r)t p(r,c)=0; endendfigure(2);imshow(p)title(size filtering,fontsize,18) for y=1:y s(y)=sum(i(1:x,y);endy=1:y;figureplot(y,s(y); figure(3);title(character segmentation,fontsize,18)j=1;%分割的字符個(gè)數(shù)索引t=100;%設(shè)定面積閾值參數(shù)for i=1:num r,c=find(l=i); if length(r)t%閾值t取100 continue; else top=min(r);bottom=max(r); left=min(c);right=max(c); tempj=p(top:bottom,left:right); subplot(1,num,j) imshow(tempj) j=j+1; endend imwrite(temp1,d:program files圖像/data1.bmp,bmp);imwrite(temp2,d:program files圖像/data2.bmp,bmp);imwrite(temp3,d:program files圖像/data3.bmp,bmp);imwrite(temp4,d:program files圖像/data4.bmp,bmp);imwrite(temp5,d:program files圖像/data5.bmp,bmp);imwrite(temp6,d:program files圖像/data6.bmp,bmp);imwrite(temp7,d:program files圖像/data7.bmp,bmp); %模版匹配識別（最小距離法） ibm1=imread(d:program files圖像/data3.bmp); ibm2=imread(d:program files圖像/data4.bmp); ibm3=imread(d:program files圖像/data5.bmp); ibm4=imread(d:program files圖像/data6.bmp); ibm5=imread(d:program files圖像/data7.bmp); %歸一化 row=40; col=30; for j=1:5 digitj=imresize(ibmj,row col,bilinear); d=zeros(1,10); for num=1:10 str=c:usersniudesktoptemplate,num2str(num),.bmp; i=imread(str); temp=imresize(i,row col,bilinear);