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THOR-Net

This repo contains the PyTorch implementation for THOR-Net: End-to-end Graformer-based Realistic Two Hands and Object Reconstruction with Self-supervision published in WACV 2023 [Paper, Video, Poster]

Dependencies

manopth==0.0.1
matplotlib==3.3.4
numpy==1.13.3
opencv_python==4.5.3.56
Pillow==9.2.0
pymeshlab==2021.10
scikit_image==0.17.2
scipy==0.19.1
skimage==0.0
torch==1.10.1
torchvision==0.11.2
tqdm==4.62.3

Step 1: Create dataset files

datasets/make_data.py creates the dataset files for HO3D by creating train-val-test splits and preprocess them to problem needs.

Adapt the variables (root and mano_root) to the HO3D dataset path (downloadable through HO3D) and mano models path (downloadable through MANO)

running the following command will create the dataset files and store them in ./datasets/ho3d/

mkdir datasets/ho3d/
python3 datasets/make_data.py --root /path/to/HO3D --mano_root /path/to/MANO --dataset_path ./datasets/ho3d/

Step 2: Train default model

The script (scripts/run_train_rcnn.sh) trains a model from scratch and has the path to the prepared dataset files and the path where the checkpoints should be stored.

For more detailed description of different parameters check utils/options.py

mkdir checkpoints/hand-object
chmod a+x ./scripts/train_ho3d.sh
./scripts/train_ho3d.sh

Step 3: Evaluate and Visualize model

The script (scripts/test_ho3d.sh) produces visualizations for the outputs of a pretrained specified model on a --split which could be train or val or test.

The pretrained model is located at --checkpoint_folder and has --checkpoint_id which corresponds to the epoch number.

We are providing pretrained weights for models that were trained on datasets of hand and object interactions, so that users can test and see the results of the model without having to train from scratch:

1. 1 hand and 1 object with texture (trained on HO-3D) HO-3D-checkpoint
2. 2 Hands and 1 object with texture (trained on H2O) H2O-checkpoint

To disable the visualization and run inference only (with evaluation if GT exists in case of a train or val split) remove --visualization flag from the script.

./scripts/test_ho3d.sh

Similarly you can evaluate the H2O model using

./scripts/test_h2o.sh

Acknowledgements

Our implementation is built on top of multiple open-source projects. We would like to thank all the researchers who provided their code publicly:

• GraFormer
• HOPE
• torchvision RCNN
• HO-3D

Citation

@InProceedings{Aboukhadra_2023_WACV,
    author    = {Aboukhadra, Ahmed Tawfik and Malik, Jameel and Elhayek, Ahmed and Robertini, Nadia and Stricker, Didier},
    title     = {THOR-Net: End-to-End Graformer-Based Realistic Two Hands and Object Reconstruction With Self-Supervision},
    booktitle = {Proceedings of the IEEE/CVF Winter Conference on Applications of Computer Vision (WACV)},
    month     = {January},
    year      = {2023},
    pages     = {1001-1010}
}