How to fix the error “QObject::moveToThread:” in opencv in python?

Question

I am using opencv2 in python with the code

import cv2
cv2.namedWindow(\"output\", cv2.WINDOW_NORMAL)       
cv2.imshow(\"output\",im)
cv2.resizeWindow(\'outp         


        

Answer 1

I tried the above mentioned method and could get opencv module working for my project which uses python3.x interpreter.

After performing few experiments, i got it working by doing the below steps:

1) Install opencv-python in your machine using:

sudo pip3 install opencv-python

2) On the python3.x terminal find the version:

>>> import cv2
>>> cv2.__version__
'3.4.1'

3) Get the same version of OpenCV from their official page.

4) Perform the CMake settings as mentioned in opencv tutorial. Note the location specified in PYTHON3_PACKAGES_PATH

5) Once build has been performed, got to the install location specified in PYTHON3_PACKAGES_PATH. Move the library named cv2.cpython-*-gnu.so to the current python3.x dist-packages path:

usr/local/lib/python3.5/dist-packages/cv2

6) Reload your python3 project and try again!