Hie guys, when i run matlab code, it displays characters from a vehicles number plate but it is saving only the last letter of the number plate in a text document. the number plate has seven characters( 3 letters and four numbers)

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varaidzo jongwe
varaidzo jongwe 2019-5-29
回答： karthikeyan chandrasekar 2019-8-16
the code is as follows
clc
close all;
clear;
load imgfildata;
[file,path]=uigetfile({'*.jpg;*.bmp;*.png;*.tif'},'Choose an image');
s=[path,file];
picture=imread(s);
[~,cc]=size(picture);
picture=imresize(picture,[300 500]);
if size(picture,3)==3
picture=rgb2gray(picture);
end
threshold = graythresh(picture);
picture =~im2bw(picture,threshold);
picture = bwareaopen(picture,30);
imshow(picture)
if cc>2000
picture1=bwareaopen(picture,3500);
else
picture1=bwareaopen(picture,3000);
end
figure,imshow(picture1)
picture2=picture-picture1;
figure,imshow(picture2)
picture2=bwareaopen(picture2,200);
figure,imshow(picture2)
[L,Ne]=bwlabel(picture2);
propied=regionprops(L,'BoundingBox');
hold on
pause(1)
for n=1:size(propied,1)
rectangle('Position',propied(n).BoundingBox,'EdgeColor','g','LineWidth',2)
end
hold off
figure
final_output=[];
t=[];
for n=1:Ne
[r,c] = find(L==n);
n1=picture(min(r):max(r),min(c):max(c));
n1=imresize(n1,[42,24]);
imshow(n1)
pause(0.2)
x=[ ];
end
totalLetters=size(imgfile,2);
for k=1:totalLetters
y=corr2(imgfile{1,k},n1);
x=[x y];
end
t=[t max(x)];
if max(x)>.45
z=find(x==max(x));
out=cell2mat(imgfile(2,z));
%final_output= [final_output out];
fid = fopen('Log.txt', 'at');
fprintf(fid,'%s\n\n',date,out);
fclose(fid);
winopen('Log.txt')
else
fid = fopen ('failed.txt','wt');
fprintf(fid,'%s\n','ATTENTION!: EXTRACTION COULD NOT BE COMPLETED.\n');
fprintf(fid,'The characters on number plate might not be clear.\n');
fclose(fid);
winopen('failed.txt')
fprintf('ATTENTION!: EXTRACTION COULD NOT BE COMPLETED.\n');
fprintf('The characters on number plate might not be clear.\n');
end

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回答（1 个）

karthikeyan chandrasekar
Try changing the sensitivity of "bwareaopen" function in the line -> picture = bwareaopen(picture,30);
instead of 30 try greater values or less untill required image obtained.

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