braille converter for exam 13-057. introduction purpose of the system need to create system to...
TRANSCRIPT
Purpose of the system• Need to create system to reduce paper works
• Need to reduce time consumption• Text to Braille Translation• Braille to Text Translation
• Using this system user can easily convert English text to Braille text and Braille character to English text
• Then BCFE System create readable paper for examiner and blind student
System Characteristics • First we need to scan English
examination paper and get BMP image file
• Then scanned paper input into BCFE system
• The system Analyze image and do the pre-processing to image– Correcting angles
– Adjust brightness
– Image De-blurring
– etc...
System Characteristics Cont... • Then using character recognition
techniques BCFE system segment characters in the image and store into correct manner.
• Then the system get stored characters one by one and map into Braille characters and create Braille character array
• Then do the adjustment to that character array and manage all characters fit to the Braille paper size.
• And create Braille Exam paper to print.
System Characteristics Cont... • In the second part blind student’s Braille
answer paper scan and insert into BCFE system.
• The system do the pre processing and correct some problems (if any) affected to character recognition.
• The using several methods and identify Braille characters.
• Then using template matching techniques find the appropriate English character .
• Then create correct English version of the answer sheet and do the post processing to printing purposes.
System Interfaces
• Hardware Interfaces
Hardware Minimum Requirements
Computer Intel Dual Core 2.2
Memory(RAM) 4GB
Hard disk space 256MB
Graphic Memory Minimum 8MB
Software Interfaces
• Aforge.NET
use for image processing and brain net libraries using for neural network implementation with MS Visual Studio 2010
• MS Visual Studio 2010
• Microsoft SQL server 2008
database to store spelling and grammar rule
System Architecture
Scanned Braille Answer Sheet Filtering Scanned Exam Paper
Enhance ImageCharacter Segmentation
English Character DatabaseBraille Character Database
Create Braille Exam PaperCreate English Answer Sheet
Post Configuration
English Answer Sheet Braille Exam paper
Features Extraction
Functional Requirement• Get the scanned image of the English paper• Convert to gray scale image• Image binarization• Noise reduction of the binarized image• De-skew.image• English character segmentation• Identify the Braille character in the database• Create a Braille examination paper• Get the scanned image of the Braille answer sheet• Convert to gray scale Braille image• Image binarization of the Braille gray scaled
image• Noise reduction of the binarized Braille image• Braille character segmentation• Identify the English character in the database• Create an English answer sheet
References
[1] Universal Braille Writer. [Online] Available:
http://www.dellchallenge.org/projects/universal-braille-writer
[2] Transforming Braille. [Online] Available:
http://www.daisy.org/projects/transforming-braille
[3] The University of Edinburgh. [Online] Available:
http://www.ed.ac.uk/schools-departments/information-services/services/
help-consultancy/accessibility/creating-materials/braille-documents
[4] Braille Without Borders. [Online] Available:
http://www.braillewithoutborders.org/ENGLISH/index_bwb.html
[5] Braille-Go-Round. [Online] Available:
https://sites.google.com/site/brailleproject/
References[1] Universal Braille Writer. [Online] Available:
http://www.dellchallenge.org/projects/universal-braille-writer
[2] Transforming Braille. [Online] Available:
http://www.daisy.org/projects/transforming-braille
[3] The University of Edinburgh. [Online] Available:
http://www.ed.ac.uk/schools-departments/information-services/services/help-
consultancy/accessibility/creating-materials/braille-documents
[4] Braille Without Borders. [Online] Available:
http://www.braillewithoutborders.org/ENGLISH/index_bwb.html
[5] Braille-Go-Round. [Online] Available:
https://sites.google.com/site/brailleproject/