Neural Face Identification in a 2D Wireframe Projection of a Manifold Object

Kehan Wang · Jia Zheng · Zihan Zhou

IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR) 2022

Requirements

conda env create --file environment.yml
conda activate faceformer

Download Dataset

We use CAD mechanical models from ABC dataset. In order to reproduce our results, we also release the dataset used in the paper here. If you would like to build the dataset by yourself, please refer to here.

Evaluation

Face Identification Model

Trained models can be downloaded here.

python main.py --config-file configs/{MODEL_NAME}.yml --test_ckpt trained_models/{MODEL_NAME}.ckpt

Face predictions will be saved to lightning_logs/version_{LATEST}/json.

3D Reconstruction

# wireframe reconstruction
python reconstruction/reconstruct_to_wireframe.py --root lightning_logs/version_{LATEST}
# surface reconstruction
python reconstruction/reconstruct_to_mesh.py --root lightning_logs/version_{LATEST}

Reconstructed wireframes (.ply) or meshes (obj) files will be saved to lightning_logs/version_{LATEST}/{ply/obj}

Train a Model from Scratch

python main.py --config_file configs/{MODEL_NAME}.yml

FAQs

• Why does root_dir not update when I change it in configs/ours.yml?
  Seems like when pytorch_lightning loads the checkpoint in, it also uses the old root dir which we trained the model with. To fix: Please uncomment line 25 of faceformer/trainer.py and set the desired root_dir there.

• How should I use the downloaded json dataset?
  Assuming we have downloaded data_ours.tar.gz and unzipped it to the same directory as split_json.py in the outer-most directory, we now have:

  root
  ├── main.py
  ├── split_json.py
  ├── ours
  │   └── 00000050.json
  │   └── 00000052.json
  │   └── ...
  

  Run python split_json.py and it should prepare the dataset into the following:

  root
  ├── main.py
  ├── split_json.py
  ├── ours
  │   └── test.txt
  │   └── train.txt
  │   └── valid.txt
  │   └── json
  │       └── 00000050.json
  │       └── 00000052.json
  │       └── ...
  

  With this, set the root_dir to "ours" at line 25 of faceformer/trainer.py, and

  python main.py --config-file configs/ours.yml --test_ckpt trained_models/ours.ckpt
  

  should work.

Acknowledgement

The work was done during Kehan Wang's internship at Manycore Tech Inc.