Help getting LIOS OCR working again

[pedro_rodriguez2]

Hi, I was a great fan of LIOS OCR. A while ago it stopped working. I would love to get LIOS working again. I saw a thread here about trying to check the Python.

I use Ubuntu 22.04 and Python 3.10

Can someone please tell how I might fix this error in bash?

pedro@pedro-HP:/usr/lib/python3/dist-packages/gi$ 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:/usr/lib/python3/dist-packages/gi$

[dragonfly41]

The clue is emedded in your log above.

Use gi.require_version('Gtk', '4.0') before import to ensure that the right version gets loaded.

So it seems that LIOS is using an early version of Gtk.

You could try hacking the Python files referred to but I have no experience with this app. I just happen to be interested in OCR so tried it myself out of curiosity.

Others suggest using tesseract.

[currentshaft]

I would use miniconda to set up an environment with an earlier, compatible version of Python to run this tool.

[Holger_Gehrke]

The author of Lios has a PPA. Seems like the version in the PPA is actually newer than the one on Github and it starts without any problems on my Xubuntu 22.04 system. Search for nalin-x-linux on launchpad.

Holger

[pedro_rodriguez2]

Think I narrowed it down a bit.

File "/usr/lib/python3/dist-packages/lios/ui/gtk/widget.py", line 166, in <module>

In widget.py is this class is on line 166:

class Separator(Gtk.HSeparator):
    def __init__(self):
        super(Separator,self).__init__()

Causing this error:

pedro@pedro-HP:/usr/lib/python3/dist-packages/gi$ lios
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'

Following a link to Gtk
I tried replacing Gtk.HSeparator with Gtk.gtk_hseparator_new in the class, but just get a similar error:

AttributeError: 'gi.repository.Gtk' object has no attribute 'gtk_hseparator_new'

Anyone know what it should be??

[pedro_rodriguez2]

Thanks for your replies!

following Holger_Gehrke's suggestion, I added the PPA and installed LIOS fron there. Now LIOS works!

LIOS seems to require Gtk 3.0

I still got this error in bash when I started LIOS, although LIOS did start and work.

pedro@pedro-HP:~$ lios
/usr/lib/python3/dist-packages/lios/ui/gtk/print_dialog.py:26: PyGIWarning: PangoCairo was imported without specifying a version first. Use gi.require_version('PangoCairo', '1.0') before import to ensure that the right version gets loaded.
from gi.repository import PangoCairo


(lios:5562): Gtk-WARNING **: 06:13:35.786: Cannot connect attribute 'text' for cell renderer class 'lios+ui+gtk+tree_view+CellRendererToggle' since attribute does not exist

Using this command I edited print_dialog.py

pedro@pedro-HP:~$ gedit admin:///usr/lib/python3/dist-packages/lios/ui/gtk/print_dialog.py

Now, print-dialog.py has this at the top:

import gi
gi.require_version("Gtk", "3.0")
gi.require_version('PangoCairo', '1.0')

I still get this error in bash, but I can OCR using LIOS again!

pedro@pedro-HP:~$ lios


(lios:6417): Gtk-WARNING **: 06:23:17.073: Cannot connect attribute 'text' for cell renderer class 'lios+ui+gtk+tree_view+CellRendererToggle' since attribute does not exist
pedro@pedro-HP:~$

Also, LIOS keeps asking me to install aspell-chi_sim on starting, but, it seems this package does not exist:

pedro@pedro-HP:~$ sudo apt install aspell-chi_sim
[sudo] password for pedro:
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package aspell-chi_sim

tesseract has chi_sim and I can OCR Chinese text successfully, so I am not sure why I need aspell-chi_sim.