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Need help in character recognition

Optical character recognition program for photographsMATLAB Optical character recognition - need helpSimple Digit Recognition OCR in OpenCV-PythonImage Processing: Algorithm Improvement for 'Coca-Cola Can' RecognitionImage-processing basicsOpenCV histogram equalization process using cv::equalizeHist():Need help understanding final step for thisCharacter recognitionCharacter recognition (OCR algorithm)Optical Character Recognition DevelopmentCharacter recognition from an image C++

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I am not getting the use of if-else statements where it is written if ind==1 || ind==2 what is it comparing and how can it say that if it is equal to 1 or 2 then letter A, if 3 or 4 the letter B etc. Can anyone help me regarding this? The if-else statements how can we randomly give any number or the numbers compared have some meaning?

% This is a function called from the main file.

function letter=readLetter(snap)

load NewTemplates 
 snap=imresize(snap,[42 24]); 
 rec=[ ];

 for n=1:length(NewTemplates)
 cor=corr2(NewTemplates1,n,snap); 
 rec=[rec cor]; 
 end

 ind=find(rec==max(rec));
 display(ind);

% Alphabets listings.
 if ind==1 || ind==2
 letter='A';

 elseif ind==3 || ind==4

 letter='B';

 elseif ind==5

 letter='C';

 elseif ind==6 || ind==7

 letter='D';

 elseif ind==8

 letter='E';

 elseif ind==9

 letter='F';

 ``` like so up to Z and 0 -9 ```
 end
 end

matlab image-processing signal-processing ocr correlation

share|improve this question

asked Mar 26 at 18:48

SaurabhSaurabh

1

add a comment | 

0

I am not getting the use of if-else statements where it is written if ind==1 || ind==2 what is it comparing and how can it say that if it is equal to 1 or 2 then letter A, if 3 or 4 the letter B etc. Can anyone help me regarding this? The if-else statements how can we randomly give any number or the numbers compared have some meaning?

% This is a function called from the main file.

function letter=readLetter(snap)

load NewTemplates 
 snap=imresize(snap,[42 24]); 
 rec=[ ];

 for n=1:length(NewTemplates)
 cor=corr2(NewTemplates1,n,snap); 
 rec=[rec cor]; 
 end

 ind=find(rec==max(rec));
 display(ind);

% Alphabets listings.
 if ind==1 || ind==2
 letter='A';

 elseif ind==3 || ind==4

 letter='B';

 elseif ind==5

 letter='C';

 elseif ind==6 || ind==7

 letter='D';

 elseif ind==8

 letter='E';

 elseif ind==9

 letter='F';

 ``` like so up to Z and 0 -9 ```
 end
 end

matlab image-processing signal-processing ocr correlation

share|improve this question

asked Mar 26 at 18:48

SaurabhSaurabh

1

add a comment | 

I am not getting the use of if-else statements where it is written if ind==1 || ind==2 what is it comparing and how can it say that if it is equal to 1 or 2 then letter A, if 3 or 4 the letter B etc. Can anyone help me regarding this? The if-else statements how can we randomly give any number or the numbers compared have some meaning?

% This is a function called from the main file.

function letter=readLetter(snap)

load NewTemplates 
 snap=imresize(snap,[42 24]); 
 rec=[ ];

 for n=1:length(NewTemplates)
 cor=corr2(NewTemplates1,n,snap); 
 rec=[rec cor]; 
 end

 ind=find(rec==max(rec));
 display(ind);

% Alphabets listings.
 if ind==1 || ind==2
 letter='A';

 elseif ind==3 || ind==4

 letter='B';

 elseif ind==5

 letter='C';

 elseif ind==6 || ind==7

 letter='D';

 elseif ind==8

 letter='E';

 elseif ind==9

 letter='F';

 ``` like so up to Z and 0 -9 ```
 end
 end

matlab image-processing signal-processing ocr correlation

share|improve this question

asked Mar 26 at 18:48

SaurabhSaurabh

1

function letter=readLetter(snap)

load NewTemplates 
 snap=imresize(snap,[42 24]); 
 rec=[ ];

 for n=1:length(NewTemplates)
 cor=corr2(NewTemplates1,n,snap); 
 rec=[rec cor]; 
 end

 ind=find(rec==max(rec));
 display(ind);

% Alphabets listings.
 if ind==1 || ind==2
 letter='A';

 elseif ind==3 || ind==4

 letter='B';

 elseif ind==5

 letter='C';

 elseif ind==6 || ind==7

 letter='D';

 elseif ind==8

 letter='E';

 elseif ind==9

 letter='F';

 ``` like so up to Z and 0 -9 ```
 end
 end

share|improve this question

asked Mar 26 at 18:48

SaurabhSaurabh

1

share|improve this question

asked Mar 26 at 18:48

SaurabhSaurabh

1

asked Mar 26 at 18:48

SaurabhSaurabh

1

asked Mar 26 at 18:48

SaurabhSaurabh

1

2 Answers
2

active

oldest

votes

0

In Matlab OR operator can be written as ||. For example in your case:

if ind==1 || ind==2
 letter='A';

Means: if ind is equal to 1 OR ind is equal to 2 - do the instruction (Set letter variable to 'A').

However in this case switch would have more sense. For example:

switch ind
 case 1,2
 letter='A';
 case 3,4
 letter='B';
 case 5
 letter='C';

 ``` like so up to Z and 0 -9 ```

 otherwise
 disp('Nothing matches')

share|improve this answer

edited Mar 26 at 19:47

answered Mar 26 at 19:40

KarlsKarls

45944 silver badges1515 bronze badges

add a comment | 

0

I got my answer upon some debugging. The values that are being compared to are coming from the .mat file that is created by MATLAB to store the binaries of the images. 1 2 3 ... are the columns of respective Letters stored in .mat file. I converted the binary to image and it was correct.

share|improve this answer

answered Mar 30 at 8:43

SaurabhSaurabh

1

add a comment | 

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0

In Matlab OR operator can be written as ||. For example in your case:

if ind==1 || ind==2
 letter='A';

Means: if ind is equal to 1 OR ind is equal to 2 - do the instruction (Set letter variable to 'A').

However in this case switch would have more sense. For example:

switch ind
 case 1,2
 letter='A';
 case 3,4
 letter='B';
 case 5
 letter='C';

 ``` like so up to Z and 0 -9 ```

 otherwise
 disp('Nothing matches')

share|improve this answer

edited Mar 26 at 19:47

answered Mar 26 at 19:40

KarlsKarls

45944 silver badges1515 bronze badges

add a comment | 

0

In Matlab OR operator can be written as ||. For example in your case:

if ind==1 || ind==2
 letter='A';

Means: if ind is equal to 1 OR ind is equal to 2 - do the instruction (Set letter variable to 'A').

However in this case switch would have more sense. For example:

switch ind
 case 1,2
 letter='A';
 case 3,4
 letter='B';
 case 5
 letter='C';

 ``` like so up to Z and 0 -9 ```

 otherwise
 disp('Nothing matches')

share|improve this answer

edited Mar 26 at 19:47

answered Mar 26 at 19:40

KarlsKarls

45944 silver badges1515 bronze badges

add a comment | 

In Matlab OR operator can be written as ||. For example in your case:

if ind==1 || ind==2
 letter='A';

Means: if ind is equal to 1 OR ind is equal to 2 - do the instruction (Set letter variable to 'A').

However in this case switch would have more sense. For example:

switch ind
 case 1,2
 letter='A';
 case 3,4
 letter='B';
 case 5
 letter='C';

 ``` like so up to Z and 0 -9 ```

 otherwise
 disp('Nothing matches')

share|improve this answer

edited Mar 26 at 19:47

answered Mar 26 at 19:40

KarlsKarls

45944 silver badges1515 bronze badges

if ind==1 || ind==2
 letter='A';

switch ind
 case 1,2
 letter='A';
 case 3,4
 letter='B';
 case 5
 letter='C';

 ``` like so up to Z and 0 -9 ```

 otherwise
 disp('Nothing matches')

share|improve this answer

edited Mar 26 at 19:47

answered Mar 26 at 19:40

KarlsKarls

45944 silver badges1515 bronze badges

answered Mar 26 at 19:40

KarlsKarls

45944 silver badges1515 bronze badges

answered Mar 26 at 19:40

KarlsKarls

45944 silver badges1515 bronze badges

0

I got my answer upon some debugging. The values that are being compared to are coming from the .mat file that is created by MATLAB to store the binaries of the images. 1 2 3 ... are the columns of respective Letters stored in .mat file. I converted the binary to image and it was correct.

share|improve this answer

answered Mar 30 at 8:43

SaurabhSaurabh

1

add a comment | 

0

I got my answer upon some debugging. The values that are being compared to are coming from the .mat file that is created by MATLAB to store the binaries of the images. 1 2 3 ... are the columns of respective Letters stored in .mat file. I converted the binary to image and it was correct.

share|improve this answer

answered Mar 30 at 8:43

SaurabhSaurabh

1

add a comment | 

I got my answer upon some debugging. The values that are being compared to are coming from the .mat file that is created by MATLAB to store the binaries of the images. 1 2 3 ... are the columns of respective Letters stored in .mat file. I converted the binary to image and it was correct.

share|improve this answer

answered Mar 30 at 8:43

SaurabhSaurabh

1

share|improve this answer

answered Mar 30 at 8:43

SaurabhSaurabh

1

answered Mar 30 at 8:43

SaurabhSaurabh

1

answered Mar 30 at 8:43

SaurabhSaurabh

1