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By Joaquim Rocha. A11y in OCRFeeder. Even with all the existing alternatives nowadays a lot of information is still printed on paper. OCRFeeder is an application for the GNOME desktop that makes it easier to convert document images (scanned documents) into digital/editable formats (such as ODT) by using a segmentation algorithm and OCR engines. Because of this, OCRFeeder is also a useful tool for the visually impaired who can use it together with Orca to be able to convert and read printed documents. Even with all the existing alternatives nowadays a lot of information is still printed on paper. OCRFeeder is an application for the GNOME desktop that makes it easier to convert document images (scanned documents) into digital/editable formats (such as ODT) by using a segmentation algorithm and OCR engines. Because of this, OCRFeeder is also a useful tool for the visually impaired who can use it together with Orca to be able to convert and read printed documents. In the year 2010, the main focus of OCRFeeder's development was the improvement of its accessibility, from the basic UI correction (widgets' accessible names, mnemonics, keyboard shortcuts, etc.) to the development of new features related to the contents detection and processing. In this talk I will give an overview of OCRFeeder and present in more detail the accessibility work mentioned above. Links: - Blog on OCRFeeder: http://www.joaquimrocha.com/category/ocr/ - OCRFeeder's webpage: http://live.gnome.org/OCRFeeder - OCRFeeder screencast: http://vimeo.com/6937052 - OCRFeeder attempt in Maemo: http://vimeo.com/3760126 - OCRFeeder's git: http://git.gnome.org/browse/ocrfeeder - OCRFeeder's releases: http://ftp.gnome.org/pub/GNOME/sources/ocrfeeder/
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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 [email protected]
Making the printed world accessible:A11y in OCRFeeder
FOSDEM 2011
Joaquim Rocha (Igalia) · OCRFeeder · FOSDEM 2010
What is it?
Document Analysis and Optical Character Recognition
for GNOME
Joaquim Rocha (Igalia) · OCRFeeder · FOSDEM 2010
What it does?
* Detect contents* Get their text using system-wide
OCR engines* Classify the contents as graphics
or text
Joaquim Rocha (Igalia) · OCRFeeder · FOSDEM 2010
How it works?
* Detect contents* Get their text using system-wide
OCR engines* Classify the contents as graphics
or text* Export the document in an editable
format
Joaquim Rocha (Igalia) · OCRFeeder · FOSDEM 2010
Because of this, OCRFeeder is useful for visually impaired users
Joaquim Rocha (Igalia) · OCRFeeder · FOSDEM 2010
... but there were some challenges when making the UI more
accessible
Joaquim Rocha (Igalia) · OCRFeeder · FOSDEM 2010
Joaquim Rocha (Igalia) · OCRFeeder · FOSDEM 2010
How to make it more accessible?
Joaquim Rocha (Igalia) · OCRFeeder · FOSDEM 2010
How to make it more accessible?
Joaquim Rocha (Igalia) · OCRFeeder · FOSDEM 2010
How to make it more accessible?
Joaquim Rocha (Igalia) · OCRFeeder · FOSDEM 2010
Direct ways:* Check the focus with Orca
* Set the accessible object's name to every “anonym” widget
* Set mnemonics and shortcuts * Add a menu/kb shortcut for every
“mouse” action* Add missing labels
Joaquim Rocha (Igalia) · OCRFeeder · FOSDEM 2010
Accessible objects' names
Joaquim Rocha (Igalia) · OCRFeeder · FOSDEM 2010
Add shortcut keys and tooltip texts to every widget
Joaquim Rocha (Igalia) · OCRFeeder · FOSDEM 2010
Add missing labels (and don't forget to assign their mnemonic widget)
Joaquim Rocha (Igalia) · OCRFeeder · FOSDEM 2010
Add menu entries for actions that could only be done with the mouse
Joaquim Rocha (Igalia) · OCRFeeder · FOSDEM 2010
Indirect ways:
Joaquim Rocha (Igalia) · OCRFeeder · FOSDEM 2010
Add feedback for every major time taking operation
Joaquim Rocha (Igalia) · OCRFeeder · FOSDEM 2010
Importation from scanner is important... Many printed material on paper
Joaquim Rocha (Igalia) · OCRFeeder · FOSDEM 2010
Improvement of columns detection
Without the With theImprovement improvement
Joaquim Rocha (Igalia) · OCRFeeder · FOSDEM 2010
Deskew of images because they might be slightly rotated when imported from a scanner(using the Hough transform)
Joaquim Rocha (Igalia) · OCRFeeder · FOSDEM 2010
A way to diminish the content areas' margins was added so it places the contents better in the generated documents.
Other improvements:Text cleaning: Correct false newline characters and remove hyphenation from the text given by OCR engines
Copy text to clipboard
Spellchecker support
Joaquim Rocha (Igalia) · OCRFeeder · FOSDEM 2010
Demo
Joaquim Rocha (Igalia) · OCRFeeder · FOSDEM 2010
Future work:* Assistant dialog to guide from
image addition to document generation
* Review focus changing* Use only one status bar
Joaquim Rocha (Igalia) · OCRFeeder · FOSDEM 2010
Webpage:http://live.gnome.org/OCRFeeder
git:http://git.gnome.org/ocrfeeder
Bugzilla:coming soon...
Joaquim Rocha (Igalia) · OCRFeeder · FOSDEM 2010
Thank you!
