Runtime error~import cv2

[paulfruitful]

Describe the bug
Traceback (most recent call last):
File "/home/kali/Documents/PDF-Table-Exctractor/reader.py", line 1, in
import camelot
File "/usr/local/lib/python3.10/dist-packages/camelot/init.py", line 6, in
from .io import read_pdf
File "/usr/local/lib/python3.10/dist-packages/camelot/io.py", line 5, in
from .handlers import PDFHandler
File "/usr/local/lib/python3.10/dist-packages/camelot/handlers.py", line 9, in
from .parsers import Stream, Lattice
File "/usr/local/lib/python3.10/dist-packages/camelot/parsers/init.py", line 4, in
from .lattice import Lattice
File "/usr/local/lib/python3.10/dist-packages/camelot/parsers/lattice.py", line 26, in
from ..image_processing import (
File "/usr/local/lib/python3.10/dist-packages/camelot/image_processing.py", line 3, in
import cv2
ModuleNotFoundError: No module named 'cv2'

Steps to reproduce the bug

Expected behavior

Code

import camelot

print('''################################################################
 $$$$$$__ $$$$$___ $$$$$$$_
$$___$$_ $$__$$__ $$______
$$___$$_ $$___$$_ $$$$$___
$$$$$$__ $$___$$_ $$______
$$______ $$__$$__ $$______
$$______ $$$$$___ $$______
################################################################''')
#'''

tables = camelot.read_pdf('foo.pdf')

tables
tables.export('foo.csv', f='csv', compress=True) # json, excel, html, markdown, sqlite

tables[0]

tables[0].parsing_report
{
    'accuracy': 99.02,
    'whitespace': 12.24,
    'order': 1,
    'page': 1
}

tables[0].to_csv('foo.csv') # to_json, to_excel, to_html, to_markdown, to_sqlite


# add your code here

Environment

• OS: Kali Linux
• Python version: Latest
• Numpy version:Latest
• OpenCV version:Latest
• Ghostscript version:Latest
• Camelot version:Latest

Additional context

[euler007]

Any update on this? getting same error on MacOs Monterey

[paulfruitful]

Any update on this? getting same error on MacOs Monterey

No update on this yet, I am still struggling to figure out what's wrong.

[phoebebright]

This worked for me. Changing import in image_processing.py to:

try:
     import cv2
except:   
     import opencv as cv2

[YKdvd]

I got this as well on MacOS 12 Monterey, Python 3.9, camelot 0.10.1. Looks like on the Mac at least there's a possibly related cv2 bug on MacOS 11 BigSur: opencv-python: opencv/opencv-python#777

I tried downgrading to opencv-python<3.7 in my requirements.txt file, and that seemed to solve the cv2 import issue, although I'm still working through other problems.

[Lucas-C]

I think this is a duplicate of #286

[MartinMohammed]

This worked for me. Changing import in image_processing.py to:

try:
     import cv2
except:   
     import opencv as cv2

I still get an error:
import opencv as cv2
ModuleNotFoundError: No module named 'opencv'

Is opencv a pip module or something like that?

[ghost]

For
@MartinMohammed :

The name of the package on PyPi and hence also for a pip command is opencv-python or opencv-python-headless

The name of the module implemented by that package and required by Camelot is cv2.

So
pip install opencv-python-headless to install the package - or you will need to do whatever is equivalent in your environment to add a package. (For instance I am using requirements.txt and a virtual environment.)

And no need for any specific code in your project, because the Camelot library already includes the import statement import cv2.

The discussion above seems like it's some sort of version control issue in the python environment for @paulfruitful 's Linux environment and in a separate issue, in a Monterey MacOS environment for @euler007 and @YKdvd.

So for @MartinMohammed just get opencv-python-headless installed and see how far you get.

I will see if I can unpick the Mac issue a little bit and comment again if I get anywhere - I do remember getting into dependency hell last time I was tinkering with this.

[bulrush15]

I'm getting the same issue here on Windows 10 Pro with Python 3.12. I'll try some of the suggestions above. The camelot instructions at https://pypi.org/project/camelot-py/ do not mention installing opencv-python.

Jinkies! Installing opencv-python-headless is 35MB.