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 know the thread is a bit old but posting for anyone else out there, I faced the same problem and it was because even after running

pip3 uninstall opencv-python

there was another version of open-cv in my system which I checked by

pip list

(I'm guessing that pip only removes the first version it finds) So I ran this command again

pip3 uninstall opencv-python

And now simply installing opencv by

pip install opencv-python

worked for me.