Convolutional Neural Network for 3D meshes in PyTorch

Overview




MeshCNN in PyTorch

SIGGRAPH 2019 [Paper] [Project Page]

MeshCNN is a general-purpose deep neural network for 3D triangular meshes, which can be used for tasks such as 3D shape classification or segmentation. This framework includes convolution, pooling and unpooling layers which are applied directly on the mesh edges.


The code was written by Rana Hanocka and Amir Hertz with support from Noa Fish.

Getting Started

Installation

  • Clone this repo:
git clone https://github.com/ranahanocka/MeshCNN.git
cd MeshCNN
  • Install dependencies: PyTorch version 1.2. Optional : tensorboardX for training plots.
    • Via new conda environment conda env create -f environment.yml (creates an environment called meshcnn)

3D Shape Classification on SHREC

Download the dataset

bash ./scripts/shrec/get_data.sh

Run training (if using conda env first activate env e.g. source activate meshcnn)

bash ./scripts/shrec/train.sh

To view the training loss plots, in another terminal run tensorboard --logdir runs and click http://localhost:6006.

Run test and export the intermediate pooled meshes:

bash ./scripts/shrec/test.sh

Visualize the network-learned edge collapses:

bash ./scripts/shrec/view.sh

An example of collapses for a mesh:

Note, you can also get pre-trained weights using bash ./scripts/shrec/get_pretrained.sh.

In order to use the pre-trained weights, run train.sh which will compute and save the mean / standard deviation of the training data.

3D Shape Segmentation on Humans

The same as above, to download the dataset / run train / get pretrained / run test / view

bash ./scripts/human_seg/get_data.sh
bash ./scripts/human_seg/train.sh
bash ./scripts/human_seg/get_pretrained.sh
bash ./scripts/human_seg/test.sh
bash ./scripts/human_seg/view.sh

Some segmentation result examples:

Additional Datasets

The same scripts also exist for COSEG segmentation in scripts/coseg_seg and cubes classification in scripts/cubes.

More Info

Check out the MeshCNN wiki for more details. Specifically, see info on segmentation and data processing.

Citation

If you find this code useful, please consider citing our paper

@article{hanocka2019meshcnn,
  title={MeshCNN: A Network with an Edge},
  author={Hanocka, Rana and Hertz, Amir and Fish, Noa and Giryes, Raja and Fleishman, Shachar and Cohen-Or, Daniel},
  journal={ACM Transactions on Graphics (TOG)},
  volume={38},
  number={4},
  pages = {90:1--90:12},
  year={2019},
  publisher={ACM}
}

Questions / Issues

If you have questions or issues running this code, please open an issue so we can know to fix it.

Acknowledgments

This code design was adopted from pytorch-CycleGAN-and-pix2pix.

Owner
Rana Hanocka
Research in Deep Learning and Computer Graphics
Rana Hanocka
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