How to read special characters using MATLAB in OCR ?
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How to read special characters using MATLAB in OCR ? Special characters like + , / | etc.
or
We can say that how to modify read_letter function which is used to read letters in OCR?
Please help me... Thanks
2 comentarios
Samreen kayani
el 20 de Dic. de 2018
%CREATE TEMPLATES
%Letter
clc;
close all;
A=imread('letters_numbers\A.bmp');B=imread('letters_numbers\B.bmp');
C=imread('letters_numbers\C.bmp');D=imread('letters_numbers\D.bmp');
E=imread('letters_numbers\E.bmp');F=imread('letters_numbers\F.bmp');
G=imread('letters_numbers\G.bmp');H=imread('letters_numbers\H.bmp');
I=imread('letters_numbers\I.bmp');J=imread('letters_numbers\J.bmp');
K=imread('letters_numbers\K.bmp');L=imread('letters_numbers\L.bmp');
M=imread('letters_numbers\M.bmp');N=imread('letters_numbers\N.bmp');
O=imread('letters_numbers\O.bmp');P=imread('letters_numbers\P.bmp');
Q=imread('letters_numbers\Q.bmp');R=imread('letters_numbers\R.bmp');
S=imread('letters_numbers\S.bmp');T=imread('letters_numbers\T.bmp');
U=imread('letters_numbers\U.bmp');V=imread('letters_numbers\V.bmp');
W=imread('letters_numbers\W.bmp');X=imread('letters_numbers\X.bmp');
Y=imread('letters_numbers\Y.bmp');Z=imread('letters_numbers\Z.bmp');
%lower case letters
a=imread('letters_numbers\a.png');b=imread('letters_numbers\b.png');
c=imread('letters_numbers\c.png');d=imread('letters_numbers\d.png');
e=imread('letters_numbers\e.png');f=imread('letters_numbers\f.png');
g=imread('letters_numbers\g.png');h=imread('letters_numbers\h.png');
i=imread('letters_numbers\i.png');j=imread('letters_numbers\j.png');
k=imread('letters_numbers\k.png');l=imread('letters_numbers\l.png');
m=imread('letters_numbers\m.png');n=imread('letters_numbers\n.png');
o=imread('letters_numbers\o.png');p=imread('letters_numbers\p.png');
q=imread('letters_numbers\q.png');r=imread('letters_numbers\r.png');
s=imread('letters_numbers\s.png');t=imread('letters_numbers\t.png');
u=imread('letters_numbers\u.png');v=imread('letters_numbers\v.png');
w=imread('letters_numbers\w.png');x=imread('letters_numbers\x.png');
y=imread('letters_numbers\y.png');z=imread('letters_numbers\z.png');
%Number
one=imread('letters_numbers\1.bmp'); two=imread('letters_numbers\2.bmp');
three=imread('letters_numbers\3.bmp');four=imread('letters_numbers\4.bmp');
five=imread('letters_numbers\5.bmp'); six=imread('letters_numbers\6.bmp');
seven=imread('letters_numbers\7.bmp');eight=imread('letters_numbers\8.bmp');
nine=imread('letters_numbers\9.bmp'); zero=imread('letters_numbers\0.bmp');
%*-*-*-*-*-*-*-*-*-*-*-
letter=[A B C D E F G H I J K L M...
N O P Q R S T U V W X Y Z];
number=[one two three four five...
six seven eight nine zero];
lowercase = [a b c d e f g h i j k ...
l m n o p q r s t u v w x y z];
character=[letter number lowercase];
templates=mat2cell(character,42,[24 24 24 24 24 24 24 ...
24 24 24 24 24 24 24 ...
24 24 24 24 24 24 24 ...
24 24 24 24 24 24 24 ...
24 24 24 24 24 24 24 24 ...
24 24 24 24 24 24 24 24 ...
24 24 24 24 24 24 24 24 ...
24 24 24 24 24 24 24 24 ...
24 24]);
save ('templates','templates')
clear all
i am facing problem while load .bmp files
can you please help me
Walter Roberson
el 20 de Dic. de 2018
What leads you to suspect that you are having trouble loading bmp files?
Are you using MS Windows? Do you have a directory named letters_numbers in your current folder? Do the noted files exist inside that folder?
The code given is not suitable for Mac or Linux: for those, all of the \ inside the file names should be changed to / . MS Windows supports / as well as \ so the code would be more general if / were to be used. But better yet would be to convert to use a named directory and fullfile()
Respuestas (3)
Aliyu Abdu
el 3 de Mayo de 2012
You can check for "OCR.." in the "file exchanger", or you can simply try the code;
%CREATE TEMPLATES
%Letter
clc;
close all;
A=imread('letters_numbers\A.bmp');B=imread('letters_numbers\B.bmp');
C=imread('letters_numbers\C.bmp');D=imread('letters_numbers\D.bmp');
E=imread('letters_numbers\E.bmp');F=imread('letters_numbers\F.bmp');
G=imread('letters_numbers\G.bmp');H=imread('letters_numbers\H.bmp');
I=imread('letters_numbers\I.bmp');J=imread('letters_numbers\J.bmp');
K=imread('letters_numbers\K.bmp');L=imread('letters_numbers\L.bmp');
M=imread('letters_numbers\M.bmp');N=imread('letters_numbers\N.bmp');
O=imread('letters_numbers\O.bmp');P=imread('letters_numbers\P.bmp');
Q=imread('letters_numbers\Q.bmp');R=imread('letters_numbers\R.bmp');
S=imread('letters_numbers\S.bmp');T=imread('letters_numbers\T.bmp');
U=imread('letters_numbers\U.bmp');V=imread('letters_numbers\V.bmp');
W=imread('letters_numbers\W.bmp');X=imread('letters_numbers\X.bmp');
Y=imread('letters_numbers\Y.bmp');Z=imread('letters_numbers\Z.bmp');
%lower case letters
a=imread('letters_numbers\a.png');b=imread('letters_numbers\b.png');
c=imread('letters_numbers\c.png');d=imread('letters_numbers\d.png');
e=imread('letters_numbers\e.png');f=imread('letters_numbers\f.png');
g=imread('letters_numbers\g.png');h=imread('letters_numbers\h.png');
i=imread('letters_numbers\i.png');j=imread('letters_numbers\j.png');
k=imread('letters_numbers\k.png');l=imread('letters_numbers\l.png');
m=imread('letters_numbers\m.png');n=imread('letters_numbers\n.png');
o=imread('letters_numbers\o.png');p=imread('letters_numbers\p.png');
q=imread('letters_numbers\q.png');r=imread('letters_numbers\r.png');
s=imread('letters_numbers\s.png');t=imread('letters_numbers\t.png');
u=imread('letters_numbers\u.png');v=imread('letters_numbers\v.png');
w=imread('letters_numbers\w.png');x=imread('letters_numbers\x.png');
y=imread('letters_numbers\y.png');z=imread('letters_numbers\z.png');
%Number
one=imread('letters_numbers\1.bmp'); two=imread('letters_numbers\2.bmp');
three=imread('letters_numbers\3.bmp');four=imread('letters_numbers\4.bmp');
five=imread('letters_numbers\5.bmp'); six=imread('letters_numbers\6.bmp');
seven=imread('letters_numbers\7.bmp');eight=imread('letters_numbers\8.bmp');
nine=imread('letters_numbers\9.bmp'); zero=imread('letters_numbers\0.bmp');
%*-*-*-*-*-*-*-*-*-*-*-
letter=[A B C D E F G H I J K L M...
N O P Q R S T U V W X Y Z];
number=[one two three four five...
six seven eight nine zero];
lowercase = [a b c d e f g h i j k ...
l m n o p q r s t u v w x y z];
character=[letter number lowercase];
templates=mat2cell(character,42,[24 24 24 24 24 24 24 ...
24 24 24 24 24 24 24 ...
24 24 24 24 24 24 24 ...
24 24 24 24 24 24 24 ...
24 24 24 24 24 24 24 24 ...
24 24 24 24 24 24 24 24 ...
24 24 24 24 24 24 24 24 ...
24 24 24 24 24 24 24 24 ...
24 24]);
save ('templates','templates')
clear all
4 comentarios
ayushi
el 26 de Jun. de 2016
sir i can't able to find the correct example for special characters template matching method how to do the template matching of "@,+)*&%^$" all those special characters please help me to find out the correct procedure i have already cropped the templates and stored it in the folder and now i am not getting how to add those in the array when i am directly writting the special characters its showing error how to do please guide me ..thank you
Walter Roberson
el 20 de Abr. de 2012
Mathworks does not supply any routine named "read_letter".
I see that there are multiple contributions in the MATLAB File Exchange that include routines named "read_letter". If you are using one of those, people would need to know which one in order to have a chance of providing advice.
5 comentarios
HanBaba
el 25 de Mzo. de 2018
Can anyone please tell me why we have taken 42 & 24 ? any theory behind this ? I'll be waiting for your positive reply !
1 comentario
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