OCR for Devanagari

This project is for sharing the training sources and traineddata files for devanagari script for use with Tesseract OCR.

Sanskrit/Hindi Traineddata

Please note that Tesseract 4.0.0-alpha with LSTM engine gives better results for Hindi and other Indian languages.

See some OCR evalaution reports at:

• Hindi and Sanskrit
  https://shreeshrii.github.io/tess4eval/

• Kannada

• https://shreeshrii.github.io/tess4eval_kannada/

My Traineddata for Sanskrit/Hindi for specific Devanagari fonts

• Newer files
  https://github.com/Shreeshrii/

• Older files - Archival Purposes only
  https://sourceforge.net/projects/tesseracthindi/files/

Devanagari Unicode Fonts

Sanskrit2003

• Font file
  http://www.omkarananda-ashram.org/Sanskrit/sanskrit2003.zip

• Font details
  http://www.sanskritweb.net/itrans/index.html#SANS2003

Siddhanta, Chandas, Uttara

• Font File
  https://sites.google.com/site/bayaryn/siddhanta.ttf?attredirects=0
  http://www.sanskritweb.net/cakram/chandas.ttf
  http://www.sanskritweb.net/cakram/uttara.ttf

• Font Details
  http://svayambhava.blogspot.in/p/siddhanta-devanagariunicode-open-type.html
  http://www.sanskritweb.net/cakram/

Santidev OT

• Font file
  http://www.sanskritweb.net/itrans/santipurot.zip

• Font details
  http://www.sanskritweb.net/itrans/#S99FONTS
  http://www.sanskritweb.net/itrans/s99fonts.pdf

Nakula, Sahadeva

• Font file
  http://bombay.indology.info/software/fonts/devanagari/nakula.ttf
  http://bombay.indology.info/software/fonts/devanagari/sahadeva.ttf

• Font details
  http://bombay.indology.info/software/fonts/devanagari/

Annapoorna SIL

• Font file
  http://software.sil.org/downloads/annapurna/AnnapurnaSIL-1.201.zip

• Font details
  http://software.sil.org/annapurna/

Lohit Devanagari

• Font file
  https://fedorahosted.org/releases/l/o/lohit/lohit-devanagari-ttf-2.95.2.tar.gz

• Font details
  https://fedorahosted.org/lohit/

FreeSerif with XeLatex

• Font Installation details
  http://cikitsa.blogspot.in/2014/12/gnu-freefont-fonts-and-xelatex.html

• Font Details
  https://www.gnu.org/software/freefont/index.html
  https://savannah.gnu.org/bugs/?group=freefont

Google Devanagari Fonts

• A variety of new devanagari unicode fonts in serif, sans-serif, display and handwriting styles
  https://fonts.google.com/?subset=devanagari

Software Used

The following software packages and utilities were used for this.

Tesseract OCR 3.05 dev

• Windows installer of tesseract-ocr 3.05 dev
  http://digi.bib.uni-mannheim.de/tesseract/tesseract-ocr-setup-3.05.00dev.exe
  https://github.com/UB-Mannheim/tesseract/wiki

• Sanskrit traineddata by training using text2image from https://github.com/Shreeshrii/imagessan
  https://github.com/Shreeshrii/imagessan/blob/master/tessdata/san95.traineddata
  https://github.com/Shreeshrii/imagessan/blob/master/tessdata/san21.traineddata

• Sanskrit traineddata from Google for tesseract-ocr 3.04
  https://github.com/tesseract-ocr/tessdata/blob/master/san.traineddata

Tesseract OCR 3.02

• Windows installer of tesseract-ocr 3.02.02 (including English language data)
  https://sourceforge.net/projects/tesseract-ocr-alt/files/tesseract-ocr-setup-3.02.02.exe/download

• Hindi language data for Tesseract 3.02
  https://sourceforge.net/projects/tesseract-ocr-alt/files/tesseract-ocr-3.02.hin.tar.gz/download

TIF/Box File Generator and Box Editors

• JTessBoxEditor
  http://sourceforge.net/projects/vietocr/files/jTessBoxEditor

OCR Evaluation Tools

• Fork of the OCR evaluation tools from UNLV/ISRI - modified by Nick White for Unicode -
  from 'ocr-evaluation-tools' from http://ancientgreekocr.org/

https://github.com/Shreeshrii/ocr-evaluation-tools
https://gitorious.org/ancient-greek-training-for-tesseract/ocr-evaluation-tools/archive-tarball/master

Use VIETOCR GUI for Tesseract with these traineddata files to OCR the text.

https://sourceforge.net/projects/vietocr/files/vietocr.net/
https://sourceforge.net/projects/vietocr/files/vietocr/