matlab识别简单字符串（7个字符）.

clc; clf; clear all; imaqmem(30000000); %申请内存空间 %ADAPTOR:MATLAB与视频设备之间的接口，主要的目的是传递信息 vid = videoinput('winvideo', 1, 'YUY2_640x480'); set(vid,'ReturnedColorSpace','rgb'); %preview(vid); %start(vid); h=figure('NumberTitle','off','Name','视频',... 'MenuBar','none',... 'Position', [0.1, 0.1, 0.5, 0.5], 'Visible', 'on'); %新建窗口 set(h,'doublebuffer','on','position',[400 250 900 600]); h1=axes('Position', [0.3, 0.2, 0.5, 1],... %新建显示窗口 'Parent',h); hold on; axis off; b=1; while b==1 %判断是否有效的图像对象句柄 a=getsnapshot (vid); % 捕获图像 flushdata(vid); %清除数据获取引擎的所有数据、置属性SamplesAvailable为0 imshow(a); %显示图像 imwrite(a,'snap1.jpg','jpg'); b=b-1; I=imread('snap1.jpg'); figure,imshow(I);title('原始图像'); gray=rgb2gray(I);%%figure,imshow(gray);title('Grayscale image'); bw=edge(gray,'canny'); theta=1:180; [R,xp]=radon(bw,theta); [I0,J]=find(R>=max(max(R)));%J记录了倾斜角 qingxiejiao=90-J I=imrotate(I,qingxiejiao,'bicubic','crop'); figure,imshow(I);title('几何校正'); imwrite(I,'correct.jpg','jpg'); L=imfilter(I,ones(5,5)/25)%第一次滤波 figure,imshow(L);title('第一次滤波'); %K=rgb2gray(I) %figure,imhist(K,255) M=im2bw(L,0.3)%二值化 figure,imshow(M);title('二值化'); %%L=imfilter(L,ones(5,5)/25); %%figure,imshow(L);title('第二次滤波'); N=im2bw(L,0.013) figure,imshow(N);title('去掉校正图的前景'); P=imadd(M,~N); P=imfilter(P,ones(5,5)/25); P=imfilter(P,ones(5,5)/25); figure,imshow(P);title('留下校正图的前景'); figure,imshow(P) P=im2bw(P,0.35); figure,imshow(P) imwrite(P,'jietujieguo.jpg','jpg'); [x,y]=size(P) P=imcrop(P,[10 10 y-20 x-20]) figure(9),imshow(P); imwrite(P,'qiege.jpg','jpg'); [m,n]=size(P); top=1;bottom=m;left=1;right=n; % init while ((sum(P(top,:))==n )&&( top<=m)) top=top+1; end while( (sum(P(bottom,:))==n) && (bottom>1)) bottom=bottom-1; end while(( sum(P(:,left))==m) && (left<n)) left=left+1; end while ((sum(P(:,right))==m )&&( right>=1)) right=right-1; end dd=right-left; hh=bottom-top; Q=imcrop(P,[left top dd hh]); %e=imcrop(P,[50 200 50 200]); %e=imcrop(P,[50 200 50 200]); figure,imshow(Q); [x_m,y_n]=size(Q); X_touying=sum((~Q)) xtouying=[0 0 0 0 0 0 0 0 0 0 0 0 0 0]; i=1; j=1; for i=1:y_n-1 if X_touying(i)~=0&&X_touying(i+1)==0||X_touying(i)==0&&X_touying(i+1)~=0; xtouying(j)=i; j=j+1; end end E1=imcrop(Q,[1 1 xtouying(1) x_m]); E2=imcrop(Q,[xtouying(2) 1 xtouying(3)-xtouying(2) x_m]); E3=imcrop(Q,[xtouying(4) 1 xtouying(5)-xtouying(4) x_m]); E4=imcrop(Q,[xtouying(6) 1 xtouying(7)-xtouying(6) x_m]); E5=imcrop(Q,[xtouying(8) 1 xtouying(9)-xtouying(8) x_m]); E6=imcrop(Q,[xtouying(10) 1 xtouying(11)-xtouying(10) x_m]); E7=imcrop(Q,[xtouying(12) 1 y_n-xtouying(13) x_m]); subplot(1,7,1);imshow(E1); subplot(1,7,2);imshow(E2); subplot(1,7,3);imshow(E3); subplot(1,7,4);imshow(E4); subplot(1,7,5);imshow(E5); subplot(1,7,6);imshow(E6); subplot(1,7,7);imshow(E7); %======================把修正数据读入============================== xiuzhenghanzi = imresize(E1, [110 55],'bilinear'); xiuzhengzimu = imresize(E2, [110 55],'bilinear'); xiuzhengzm_sz_1= imresize(E3,[110 55],'bilinear'); xiuzhengzm_sz_2 = imresize(E4,[110 55],'bilinear'); xiuzhengshuzi_1 = imresize(E5,[110 55],'bilinear'); xiuzhengshuzi_2 = imresize(E6,[110 55],'bilinear'); xiuzhengshuzi_3 = imresize(E7,[110 55],'bilinear'); %============ 把0-9 , A-Z以及省份简称的数据存储方便访问==================== hanzishengfen=duquszzm(imread('0.bmp'),imread('1.bmp'),imread('2.bmp'),imread('3.bmp'),imread('4.bmp'),... imread('5.bmp'),imread('6.bmp'),imread('7.bmp'),imread('8.bmp'),imread('9.bmp'),... imread('10.bmp'),imread('11.bmp'),imread('12.bmp'),imread('13.bmp'),imread('14.bmp'),... imread('15.bmp'),imread('16.bmp'),imread('17.bmp'),imread('18.bmp'),imread('19.bmp'),... imread('20.bmp'),imread('21.bmp'),imread('22.bmp'),imread('23.bmp'),imread('24.bmp'),... imread('25.bmp'),imread('26.bmp'),imread('27.bmp'),imread('28.bmp'),imread('29.bmp'),... imread('30.bmp'),imread('31.bmp'),imread('32.bmp'),imread('33.bmp')); %因数字和字母比例不同。这里要修改 shuzizimu=duquszzm(imread('0.bmp'),imread('1.bmp'),imread('2.bmp'),imread('3.bmp'),imread('4.bmp'),... imread('5.bmp'),imread('6.bmp'),imread('7.bmp'),imread('8.bmp'),imread('9.bmp'),... imread('10.bmp'),imread('11.bmp'),imread('12.bmp'),imread('13.bmp'),imread('14.bmp'),... imread('15.bmp'),imread('16.bmp'),imread('17.bmp'),imread('18.bmp'),imread('19.bmp'),... imread('20.bmp'),imread('21.bmp'),imread('22.bmp'),imread('23.bmp'),imread('24.bmp'),... imread('25.bmp'),imread('26.bmp'),imread('27.bmp'),imread('28.bmp'),imread('29.bmp'),... imread('30.bmp'),imread('31.bmp'),imread('32.bmp'),imread('33.bmp')); zimu = duquszzm(imread('0.bmp'),imread('1.bmp'),imread('2.bmp'),imread('3.bmp'),imread('4.bmp'),... imread('5.bmp'),imread('6.bmp'),imread('7.bmp'),imread('8.bmp'),imread('9.bmp'),... imread('10.bmp'),imread('11.bmp'),imread('12.bmp'),imread('13.bmp'),imread('14.bmp'),... imread('15.bmp'),imread('16.bmp'),imread('17.bmp'),imread('18.bmp'),imread('19.bmp'),... imread('20.bmp'),imread('21.bmp'),imread('22.bmp'),imread('23.bmp'),imread('24.bmp'),... imread('25.bmp'),imread('26.bmp'),imread('27.bmp'),imread('28.bmp'),imread('29.bmp'),... imread('30.bmp'),imread('31.bmp'),imread('32.bmp'),imread('33.bmp')); shuzi = duquszzm(imread('0.bmp'),imread('1.bmp'),imread('2.bmp'),imread('3.bmp'),imread('4.bmp'),... imread('5.bmp'),imread('6.bmp'),imread('7.bmp'),imread('8.bmp'),imread('9.bmp'),... imread('10.bmp'),imread('11.bmp'),imread('12.bmp'),imread('13.bmp'),imread('14.bmp'),... imread('15.bmp'),imread('16.bmp'),imread('17.bmp'),imread('18.bmp'),imread('19.bmp'),... imread('20.bmp'),imread('21.bmp'),imread('22.bmp'),imread('23.bmp'),imread('24.bmp'),... imread('25.bmp'),imread('26.bmp'),imread('27.bmp'),imread('28.bmp'),imread('29.bmp'),... imread('30.bmp'),imread('31.bmp'),imread('32.bmp'),imread('33.bmp')); %============================识别结果================================ i=1;%shibiezm_sz该函数识别数字有问题 jieguohanzi = shibiezm_sz(hanzishengfen,xiuzhenghanzi);shibiejieguo(1,i) =jieguohanzi; i=i+1; jieguozimu = shibiezm_sz(zimu,xiuzhengzimu); shibiejieguo(1,i) =jieguozimu; i=i+1; jieguozm_sz_1= shibiezm_sz(shuzizimu,xiuzhengzm_sz_1); shibiejieguo(1,i) =jieguozm_sz_1;i=i+1; jieguozm_sz_2= shibiezm_sz(shuzizimu,xiuzhengzm_sz_2); shibiejieguo(1,i) =jieguozm_sz_2;i=i+1; jieguoshuzi_1= shibiezm_sz(shuzi,xiuzhengshuzi_1); shibiejieguo(1,i) =jieguoshuzi_1;i=i+1; jieguoshuzi_2= shibiezm_sz(shuzi,xiuzhengshuzi_2); shibiejieguo(1,i) =jieguoshuzi_2;i=i+1; jieguoshuzi_3= shibiezm_sz(shuzi,xiuzhengshuzi_3); shibiejieguo(1,i) =jieguoshuzi_3;i=i+1; %==========================对话框显示显示============================================= shibiejieguo msgbox(shibiejieguo,'识别结果'); u=uint8(zeros(1024,1));%zeros(M,N):M*N矩阵，所以zeros（1024,1）为一个1024个单元的数组。 ser_port1=serial('COM4');%分配com4口 ser_port1.InputBufferSize=4096; ser_port1.OutputBufferSize=4096; ser_port1.Timeout=10; ser_port1.BaudRate=9600; ser_port1.Parity='even'; ser_port1.StopBits=1; fopen(ser_port1); fwrite(ser_port1,'abcdefgh');%写函数，以二进制方式写 fprin