python3 cv2 installation

Homebrew is struggling with the older python 2.7 version that is missing ssl support. Python 3.8 did not recognize cv2 but this finally worked

brew install python3
brew postinstall python3
pip3 install virtualenv virtualenvwrapper
virtualenv env_name --python="python3"
/Users/wjst/env_name/bin/pip3 install opencv-python
/Users/wjst/env_name/bin/pip3 install pandas scipy matplotlib Pillow tqdm sklearn imageio
/Users/wjst/env_name/bin/python3 -c "import cv2"

then I could finally run the image forgery detection from Github.

cd /Users/wjst/Desktop/image-copy-move-detection-master
> from copy_move_detection import detect
> ...