https://huggingface.co/ameerazam08/Real3DPortrait/resolve/main/pytorch3d/docs/tutorials/bundle_adjustment.ipynb
hf download hf://ameerazam08/Real3DPortrait/pytorch3d/docs/tutorials/bundle_adjustment.ipynb
curl -L -o bundle_adjustment.ipynb https://huggingface.co/ameerazam08/Real3DPortrait/resolve/main/pytorch3d/docs/tutorials/bundle_adjustment.ipynb
