pip install numpy opencv-python

python interactive_grabcut.py images/car.jpg masks/car.png

q: quit/done.
r: reset.
left-click-down: start bounding box.
left-click-up: end bounding box.

q: quit/done.
r: reset.
f: Switch to marking foreground.
b: Switch to marking background.
u: undo.
g: Re-run GrabCut segmentation.
left-click-down: start marking region.
left-click-up: end marking region.

@article{rother2004grabcut,
  title={" GrabCut" interactive foreground extraction using iterated graph cuts},
  author={Rother, Carsten and Kolmogorov, Vladimir and Blake, Andrew},
  journal={ACM transactions on graphics (TOG)},
  volume={23},
  number={3},
  pages={309--314},
  year={2004},
  publisher={ACM New York, NY, USA}
}