Hi Rui: When was this update written? I have your app for my
add on for NVDA, but it is dated January of 2022. Is that the
latest update? If not, I missed the address to go to update, if
it won't update, from the alt + h key in the NVDA Add on's. I
apologize for being a little late on this information. I had in
my mind that this was a different ADD On other than the Now
app. Can you be so, kind to help out here? Thanks in advance.
Here is the documentation:
TesseractOCR
• Authors: Rui Fontes rui.fontes@... and
Angelo Abrantes ampa4374@...
• Updated in 13/07/2022
• Download stable version
• Compatibility: NVDA version 2019.3 and beyond
Informations
This add-on uses the free and open source Tesseract OCR
engine, to perform optical character recognition on an image
file, PDF, JPG, TIF or other, without the need to open it. It
also uses wia-cmd-scanner to be able to access WIA enabled
scanners and perform OCR to a paper document. In the NVDA
menu, Preferences, a TesseractOCR section is added, where you
can configure the languages to be used in recognition and the
type of documents to be recognized. With the exception of
English and Portuguese, which are already included in add-on,
the other languages will be downloaded and installed when you
select a language that does not already exist in the add-on.
Note that as the number of selected recognition languages
increases, the OCR process will take longer. We therefore
recommend that you use only the languages you need. Note also
that the quality of recognition may vary according to the
order of languages. Therefore, if the recognition result is
not satisfactory, you may want to try another language
ordering.
Shortcut
The default commands are: Windows+Control+r - to recognize the
selected document; Windows+Control+w - to scan and recognize a
document through the scanner.
Then just wait that ocr.txt opens with the recognized text. If
you want to preserve the recognized text, don't forget to save
the document under another name and in another location, as
all files in the temporary directory are deleted at the start
of the next OCR process!
This commands can be modified in the "Input gestures" dialog
in the "TesseractOCR" section.
Automatic update
This add-on includes an automatic update feature. The check
for a new version will be executed everytime NVDA is loaded.
If you want this, go to NVDA, Preferences, Options and in the
add-on category check the check box.
Known problems
• In some systems it is possible that add-on do not work due
to a comtypes error... In some machines it is enough going to
the temp folder, and deleting the comtypes_cache folder.
• When selecting the "Various" option in the "Documents type"
combobox, the recognized text probably appear with many blank
lines This is a known problem with Tesseract, and, without
consumming lots of processing time, I haven't yet found any
solution. But, I still haven't given up!
Languages supported
The supported languages in this version are: Afrikans Albanian
Amharik Arabic Armenian Assamese Azerbaijani (Latin) Basque
Belarusian Bengali Bosnian Breton Bulgarian Burnese
Catalan/Valencian Cebuano Cherokee Chinese simplified Chinese
traditional Corsican Croatian Czech Dannish Deutch Dhivehi
Dutch (Flemish) Dzongkha English Esperanto Estonian Faroese
Filipino Finnish French Galician Georgian Greek Gujarati
Haitian Hebrew Hindi Hungarian Icelandic Indonesian Inuktitut
Irish Italian Javanese Japanese Kannada Kazakh Khmer (Central)
Kirghiz Korean Kurdish Kurmanji Lao Latin Lativia Lituanian
Luxembourgish Macedonian Malay Malayalam Maltese Maori Marathi
Math / equation detection module Mongolian Nepali Norwegian
Occitan Oriya Panjabi Pashto Persian Polish Portuguese Quechua
Romanian/Moldave Russian Sanskrit Scottish Gaelic Serbian
(Latin) Slovak) Slovenian) Sindhi Sinhalese Spanish Sundanese
Swahili Swedish Syriac Tajik Tamil Tatar Telugu Thai Tibetan
Tigrinya Tonga Turkish Uighur Ukrainian Urdu Uzbek (Latin)
Vietnamese Welsh West Frisian Yiddish Yoruba
Image types supported
This add-on supports the following types of files: PDF jpg tif
png bmp pnm pbm pgm jp2 gif jfif jpeg tiff spix webp
Best regards,
Rui Fontes
NVDA portuguese team
Às 15:09 de 13/07/2022, Anthony tom
escreveu:
How is it
used?
