在MATLAB中检测车牌中的符号

Question

我正在从MATLAB中的车牌号检测数字和符号（残疾人）的项目。我已经创建了相同的模板。从盘子中检索数字，得到了各种结果。我主要关注的是正确读取数字和牌照。任何人都可以帮我吗？

％模板程序

desiredsize = [42 24];
files = {'1', '2', '3', '4', '5', '0', 'sign'};
NewTemplates1 = cell(size(files));
for fileidx = 1:numel(files)
   img = imread([files{fileidx}, '.png']);
   img= rgb2gray(img);
   img = imresize(img, desiredsize);
   NewTemplates1{fileidx} = img;
end

％号提取程序

clc;
clear all;
load NewTemplates1;
word=[ ];
img=imread('2222.jpg');
figure,imshow(img);
[~,cc]=size(img);
picture=imresize(img,[300 500]);

if size(picture,3)==3
  picture=rgb2gray(picture);  %grey values are btwn 0 to 1 or 0 to 255
end



threshold = graythresh(picture);  %greythresh gives the threshold value of greyscale image
picture =~im2bw(picture,threshold);   %black nd white values are 0 or 1 and values greater thn threshold=1,rest=0 and invert white and black ie 1 to 0 and 0 to 1
picture = bwareaopen(picture,30);  % those things that have less than 30 pixels are removed


if cc>2000
    picture1=bwareaopen(picture,3500);  %those things that have less than 3500 pixels are removed ie excluding nmbr plate
else
picture1=bwareaopen(picture,3000);  %those things that have less than 3000 pixels are removed ie excluding nmbr plate
end
figure,imshow(picture1);
picture2=picture-picture1;  %only number plate is left
picture2=bwareaopen(picture2,50);   %only text is there in the nmbr plate
figure,imshow(picture2);
title('plate extracted');
[L,Ne]=bwlabel(picture2,8);
%% Measure properties of image regions
propied=regionprops(L,'BoundingBox');
hold on
%% Plot Bounding Box
for n=1:size(propied,1)
  rectangle('Position',propied(n).BoundingBox,'EdgeColor','g','LineWidth',2)
end
hold off
pause (1)
% Compute the number of letters in template file
num_letras=size(NewTemplates1,2);
%% Objects extraction
figure
for n=1:Ne
  [r,c] = find(L==n);
  n1=picture2(min(r):max(r),min(c):max(c));
  img_r=imresize(n1,[42 24]);
  letter=readLetter1(img_r);
        % Letter concatenation
  word=[word letter];
  fid = fopen('noPlate.txt', 'wt'); % This portion of code writes the number plate
    fprintf(fid,'%s\n',word);      % to the text file, if executed a notepad file with the
    fclose(fid);                      % name noPlate.txt will be open with the number plate written.
    winopen('noPlate.txt')

%   imshow(~n1);
  pause(0.5);
end