pip3 install opencv-python
sudo apt-get install libsm6 libxrender1 libfontconfig1
pip install opencv-contrib-python
pip3 install -r requirements.txt \
result = swaplib.doTheSwap(
'./crop_source.jpg',
'./rf_template.png',
'./hl_template.png')
cv2.imwrite("./test_result.jpg", result)