Lios OCR not working in Ubuntu 22.04

Pedroski · 03-28-2023, 08:00 PM

In the past I have always used Lios to get text from jpgs or pdfs.

Lios always worked great for me in Ubuntu 20.04!

Now, in Ubuntu 22.04 it won't work. A gtk error.

I used

Quote:

sudo apt-get purge lios

Then I reinstalled, but I am getting the same error, please see below.

Any tips on how to fix this please?

Quote:

pedro@pedro-HP:~$ lios
/usr/lib/python3/dist-packages/lios/ui/gtk/text_view.py:21: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '4.0') before import to ensure that the right version gets loaded.
from gi.repository import Gtk
/usr/lib/python3/dist-packages/lios/ui/gtk/widget.py:24: PyGIWarning: Atk was imported without specifying a version first. Use gi.require_version('Atk', '1.0') before import to ensure that the right version gets loaded.
from gi.repository import Atk
Traceback (most recent call last):
File "/usr/bin/lios", line 3, in <module>
from lios.main import *
File "/usr/lib/python3/dist-packages/lios/main.py", line 27, in <module>
from lios import scanner, editor, imageview, cam, ocr, preferences, speech, train_tesseract
File "/usr/lib/python3/dist-packages/lios/editor.py", line 20, in <module>
from lios.ui.gtk import text_view, tree_view, widget, dialog, file_chooser, containers, window
File "/usr/lib/python3/dist-packages/lios/ui/gtk/widget.py", line 166, in <module>
class Separator(Gtk.HSeparator):
File "/usr/lib/python3/dist-packages/gi/overrides/__init__.py", line 32, in __getattr__
return getattr(self._introspection_module, name)
File "/usr/lib/python3/dist-packages/gi/module.py", line 123, in __getattr__
raise AttributeError("%r object has no attribute %r" % (
AttributeError: 'gi.repository.Gtk' object has no attribute 'HSeparator'
pedro@pedro-HP:~$

business_kid · 03-30-2023, 08:06 AM

Code:

PyGIWarning: Gtk was imported without specifying a version first. Use 
gi.require_version('Gtk', '4.0') before import to ensure that the right version gets 
loaded.

That looks like the issue. There was gtk-1.x and it stayed alive longer than it should have. Gtk-2.x & gtk-3.x are current, but guys must be working on gtk-4.x even while gtk-3.x is getting sorted.

So, something is saying "load gtk" and it's thinking "GTK what??" So it's guessing, and the guess is wrong. Tesseract isn't big into eye candy, so I guess it's Lios that's running gtk. Try specifying gtk-2.x or if that fails, gtk-3.x.

Pedroski · 04-06-2023, 07:06 AM

Thanks for the reply, only just noticed!

I am not really sure how or where I can change lios.

I looked up gocr, and that works for me now. Shame, I always liked LIOS!

I may need a bash script to help me with larger OCR requirements, but mostly, I only ever need 1 or 2 pages scanned.

I just hope an update somewhen will get LIOS back on track!

business_kid · 04-06-2023, 01:52 PM

I'm far from the most up-to-date guy here, but palemoon has gtk-2.x, and gtk-3.x versions. My system works better on gtk-2.x. The full version numbers are gth-x.y.z, where

z= bug fix
y = feature addition.
x = Break in compatability.

Now Lios is looking for gtk-4? You'd do better to get a version for gtk-2 or 3.

I found gocr poorly maintained and underperforming. Tesseract was the best but give it plenty of dpi in the input. Lios is on sourceforge. It should say what gtk it works with.