numpy==1.20.3 --find-links https://download.pytorch.org/whl/torch_stable.html torch==1.9.0+cu111 torchvision==0.10.0+cu111 opencv-python==4.5.2.52 shapely==1.8.0 --find-links https://dl.fbaipublicfiles.com/detectron2/wheels/cu111/torch1.9/index.html detectron2