Difference between revisions of "Optical Character Recognition"

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{{i18n|Optical Character Recognition}}
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* {{App|[[GOCR]]/JOCR|An OCR engine which also supports barcode recognition.|http://jocr.sourceforge.net/|{{Pkg|gocr}}}}
 
* {{App|[[GOCR]]/JOCR|An OCR engine which also supports barcode recognition.|http://jocr.sourceforge.net/|{{Pkg|gocr}}}}
 
* {{App|[[Ocrad]]|An OCR program based on a feature extraction method.|http://www.gnu.org/software/ocrad/|{{Pkg|ocrad}}}}
 
* {{App|[[Ocrad]]|An OCR program based on a feature extraction method.|http://www.gnu.org/software/ocrad/|{{Pkg|ocrad}}}}
* {{App|[[Tesseract]]|"Probably one of the most accurate open source OCR engines available".|http://code.google.com/p/tesseract-ocr/|{{Pkg|tesseract}}}}
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* {{App|[[Tesseract]]|"Probably one of the most accurate open source OCR engines available". Package splitted, you need install some datafiles for each language ({{Pkg|tesseract-data-eng}} for examle).|http://code.google.com/p/tesseract-ocr/|{{Pkg|tesseract}}}}
  
 
=== Layout analysers and user interfaces ===
 
=== Layout analysers and user interfaces ===
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* {{App|[[OCRFeeder]]|Python GUI for Gnome which performs document analysis and rendition, and can use either [[CuneiForm]], [[GOCR]], [[Ocrad]] or [[Tesseract]] as OCR engines. It can import from PDF or image files, and export to HTML or OpenDocument. |http://live.gnome.org/OCRFeeder|{{pkg|ocrfeeder}}}}
 
* {{App|[[YAGF]]|graphical interface for the [[CuneiForm]] text recognition program on the Linux platform. Available from community repository|http://symmetrica.net/cuneiform-linux/yagf-en.html|{{Pkg|yagf}}}}
 
* {{App|[[YAGF]]|graphical interface for the [[CuneiForm]] text recognition program on the Linux platform. Available from community repository|http://symmetrica.net/cuneiform-linux/yagf-en.html|{{Pkg|yagf}}}}
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* {{App|[[gImageReader]]|A graphical GTK frontend to Tesseract|http://gimagereader.sourceforge.net/|{{AUR|gimagereader}}}}
 
* {{App|[[gscan2pdf]]|scans, runs Tesseract and creates a PDF all in one go|http://gscan2pdf.sourceforge.net/|{{AUR|gscan2pdf}}}}
 
* {{App|[[gscan2pdf]]|scans, runs Tesseract and creates a PDF all in one go|http://gscan2pdf.sourceforge.net/|{{AUR|gscan2pdf}}}}
* {{App|[[Kooka]]|scanner GUI for KDE which supports the OCR engines [[GOCR]], [[Ocrad]] or [[KADMOS]]. Used to be part of kdegraphics4, but dropped out due to lack of development|http://kooka.kde.org/{{Linkrot|2011|09|03}}|{{AUR|kooka}}}}
 
* {{App|[[OCRFeeder]]|Python GUI for Gnome which performs document analysis and rendition, and can use either [[CuneiForm]], [[GOCR]], [[Ocrad]] or [[Tesseract]] as OCR engines. It can import from PDF or image files, and export to HTML or OpenDocument. Available from [[AUR]]|http://live.gnome.org/OCRFeeder|{{AUR|ocrfeeder}}}}
 
 
* {{App|[[OCRopus]]|OCR ''platform'', modules exist for document layout analysis, OCR engines (it can use Tesseract or its own engine), natural language modelling, etc. Available from [[AUR]]|http://code.google.com/p/ocropus/|{{AUR|ocropus}}}}
 
* {{App|[[OCRopus]]|OCR ''platform'', modules exist for document layout analysis, OCR engines (it can use Tesseract or its own engine), natural language modelling, etc. Available from [[AUR]]|http://code.google.com/p/ocropus/|{{AUR|ocropus}}}}

Revision as of 07:09, 9 December 2012

Tango-document-new.pngThis article is a stub.Tango-document-new.png

Notes: please use the first argument of the template to provide more detailed indications. (Discuss in Talk:Optical Character Recognition#)

There are several steps to the whole OCR process, the actual OCR engine is only part of this:

  1. scanning
  2. document layout analysis
  3. optical character recognition
  4. post-processing (formatting, PDF creation)

OCR software

OCR (Optical Character Recognition) Engines

  • CuneiForm — A command line OCR system originally developed and open sourced by Cognitive technologies. Supported languages: eng, ger, fra, rus, swe, spa, ita, ruseng, ukr, srp, hrv, pol, dan, por, dut, cze, rum, hun, bul, slo, lav, lit, est, tur.
https://launchpad.net/cuneiform-linux || cuneiform
  • GOCR/JOCR — An OCR engine which also supports barcode recognition.
http://jocr.sourceforge.net/ || gocr
  • Ocrad — An OCR program based on a feature extraction method.
http://www.gnu.org/software/ocrad/ || ocrad
  • Tesseract — "Probably one of the most accurate open source OCR engines available". Package splitted, you need install some datafiles for each language (tesseract-data-eng for examle).
http://code.google.com/p/tesseract-ocr/ || tesseract

Layout analysers and user interfaces

  • OCRFeeder — Python GUI for Gnome which performs document analysis and rendition, and can use either CuneiForm, GOCR, Ocrad or Tesseract as OCR engines. It can import from PDF or image files, and export to HTML or OpenDocument.
http://live.gnome.org/OCRFeeder || ocrfeeder
  • YAGF — graphical interface for the CuneiForm text recognition program on the Linux platform. Available from community repository
http://symmetrica.net/cuneiform-linux/yagf-en.html || yagf
http://gimagereader.sourceforge.net/ || gimagereaderAUR
  • gscan2pdf — scans, runs Tesseract and creates a PDF all in one go
http://gscan2pdf.sourceforge.net/ || gscan2pdfAUR
  • OCRopus — OCR platform, modules exist for document layout analysis, OCR engines (it can use Tesseract or its own engine), natural language modelling, etc. Available from AUR
http://code.google.com/p/ocropus/ || ocropusAUR