OpenCV Assertion failed: (-215:Assertion failed) npoints >= 0 && (depth == CV_32F || depth == CV_32S)

Question

I have found the following code on this website:

import os
import os.path
import cv2
import glob
import imutils
CAPTCHA_IMAGE_FOLDER = \"generated_captcha_im         


        

Answer 1

This is because of opencv-python version 4.0.0. If you want to fix this without changing your code then downgrade opencv-python to version 3.4.9.31

• Uninstall opencv-python

  pip uninstall opencv-python

• Install opencv-python==3.4.9.31

  pip install opencv-python==3.4.9.31

If facing issue with function 'pointSetBoundingRect', you need to install 'opencv-python-headless'

pip install opencv-python-headless==3.4.9.31