Braille character recognition

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!

Answer 1

[Sean de Wolski]

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.

Answer 2

[mimitha Last Name]

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.

[Sean de Wolski]

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]

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 :) !

Answer 3

[Nagwa megahed]

please , can i know which dataset you did work in? as i search for braille dataset for recognition task

[Image Analyst]

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]

yes , you think right

there is a lack in the avialability of Braille character images