OCRFeeder: OCR Made Easy on GNOME

A presentation of what OCRFeeder is and what is does.

Transcript

1. static void _f_do_barnacle_install_properties(GObjectClass *gobject_class) { GParamSpec *pspec; /* Party code attribute */ pspec = g_param_spec_uint64 (F_DO_BARNACLE_CODE, "Barnacle code.", "Barnacle code", 0, G_MAXUINT64, G_MAXUINT64 /* default value */, G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_PRIVATE); g_object_class_install_property (gobject_class, F_DO_BARNACLE_PROP_CODE, Joaquim Rocha jrocha@igalia.com OCRFeeder OCR Made Easy on GNOME July 27 2012
2. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012 What is it? Document Analysis and Optical Character Recognition for GNOME
3. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012 Why? Paper has a number of problems No applications for GNU/Linux to do a fair job
4. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012 Paper problems: Security CC Photo by: http://www.flickr.com/photos/badwsky/
5. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012 Paper problems: Preservation CC Photo by: http://www.flickr.com/photos/98469445@N00/
6. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012 Paper problems: Data processing CC Photo by: http://www.flickr.com/photos/hugovk/
7. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012 Paper problems: Ecology CC Photo by: http://www.flickr.com/photos/pranavsingh/
8. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012 Paper problems: Accessibility CC Photo by: http://www.flickr.com/photos/illustrator/
9. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012 No fair conversion apps for GNU/Linux apart from OCR engines, but...
10. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012 OCR != Document Conversion (it only deals with chars) (does not consider the layout) (does not distinguish contents)
11. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012 What's needed is Document Analysis and Recognition (conversion of documents to an electronic format) (first projects in the 80s)
12. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012
13. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012
14. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012 How it works
15. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012 So many layouts... CC Photo by: http://www.flickr.com/photos/uber-tuber/
16. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012 Layouts vary with the type of document What works on detecting one, won't work on others
17. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012 OCRFeeder focuses on contents, not on layouts!
18. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012 Key concept: If a document image can be divided in windows of 1 (content) or 0 (not content), then it is possible to group all the 1s and outline the contents
19. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012
20. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012 Recognition: System-wide OCR engines are used Engines are configured from the GUI or XML files
21. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012
22. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012 Most known free OCR engines are detected and configured automatically: * Tesseract * GOCR * OCRAD * Cuneiform
23. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012 Exportation formats: ODT HTML Plain text PDF
24. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012 User interaction: Users can edit everything and review the algorithm's results So, UI can work in attended and unattended ways CLI only works in an unattended mode
25. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012
26. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012 Demo time!
27. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012 Other features: * PDF importation * Unpaper preprocessor * Font style edition * Image deskewing * OCR results cleaning * Project saving/loading
28. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012 Future: * More exportation formats: HOCR, etc. * Make OCR engines' management easier
29. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012 Webpage: http://live.gnome.org/OCRFeeder git: http://git.gnome.org/ocrfeeder Bugzilla: http://bugzilla.gnome.org product: OCRFeeder
30. Joaquim Rocha (Igalia) · OCRFeeder · GUADEC 2012 Thank you!