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Braille character recognition

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mimitha Last Name
mimitha Last Name 2011-3-31
评论： Nagwa megahed 2022-6-19
BOLD TEXT Hai i need a help.. im doing my final year project in title braille character recognition since braille is different with other character i cant use the normal OCR codings to convert them in english text.. i managed to crop them by finding the brailles grid but then i don't know how to match these cropped original images with the template images... is the any ideas hw i cud do this.. pls help im stuck!

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Sean de Wolski
Sean de Wolski 2011-3-31
One easy way: minimum absolute differences. Rescale each character so it is the same size as a set of templates (contained in slices of a 3-d matrix). Use BSXFUN to subtract the actual image from all of the templates and sum the absolute values of this. The minimum one is the match.

更多回答（2 个）

mimitha Last Name
mimitha Last Name 2011-3-31
No actually no its like i have few characters in a braille document and i cropped them 1 by 1 and i have a group braille templates which contain english lettes for e.g A(100000) so i have to match them and get the english letter as the output.
  2 个评论
Sean de Wolski
Sean de Wolski 2011-3-31
Yes and what about the above doesn't do that? You get the index corresponding to the letter (1-26, or 52, or however many) and you keep that letter.
mimitha Last Name
mimitha Last Name 2011-3-31
sorry im kinda new to matlab i got confuse with your method. let me try this first and i will get back here thanks for the help :) !

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Nagwa megahed
Nagwa megahed 2022-6-5
please , can i know which dataset you did work in? as i search for braille dataset for recognition task
  2 个评论
Image Analyst
Image Analyst 2022-6-6
If you're going to use some program to analyze your braille images, then you must already have braille images obviously. Otherwise why would you be interested in a Braille OCR program?
I think you really meant to ask how he took a sheet of braille and found the bounding box of each individual braille character.
Nagwa megahed
Nagwa megahed 2022-6-19
yes , you think right
there is a lack in the avialability of Braille character images

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