How to display characters in OCR during recognition ?
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Minu
am 29 Mai 2013
Kommentiert: sanal
am 14 Jan. 2014
I am doing project in OCR.For recognition part,i want to display of Malayalam characters.Is it possible to display character and then how to convert it.Could anybody help me to solve this ....
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Walter Roberson
am 29 Mai 2013
If you have the Unicode position of a character, and the code position is no greater than U+FFFF, then you can output it to the command window relatively simply.
Malayalam characters are in the range U+0D00 to U+0D7F, so this applies to all Malayalam characters.
Example: U+0D15 which is ക you can output to the command window using
char(hex2dec('0D15'))
You can also create such strings using sprintf()
X = sprintf('#%c#', hex2dec('0D15'))
which would create the string #ക#
And here is another trick for you, for the case where the character number is known in advance (instead of being calaculated):
X = sprintf('#\x0d15#)
However, you cannot display such strings to the command window using fprintf() instead of sprintf()
fprintf('#%c#', hex2dec('0D15')) %will not work as expected
fprintf('#\x0d15#') %will not work either
These would appear to print out ## and if you checked more closely that would be #^Z# where ^Z represents char(26)
To write to a file, you have a couple of choices:
1)
fid = fopen('test.txt','w','ieee-be','UTF-8');
fprintf(fid, '#%c#', hex2dec('0D15'));
fprintf(fid, '#\x0d15#'); %alternate if character is known in advance
fclose(fid);
(You can also use 'ieee-le' instead.)
2)
X = sprintf('#%c#', hex2dec('0D15'));
X = sprintf('#\x0d15#'); %alternate if character is known in advance
fid = fopen('test.txt', 'w');
fwrite(fid, unicode2native(X,'UTF-8'), 'uint8');
fclose(fid);
Option #1 can "look nicer", but Option #2 is more explicit and will match what has to be done when you read the data in.
Then to read the file, you can use
fid = fopen('test.txt', 'r');
T = fread(fid) .'; %gets entire file %note .' here
T = fgetl(fid); %alternate, gets only one line
fclose(fid);
Then
X = native2unicode(T,'UTF-8');
This would give you back the string #ക#
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