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GenForce Lib for Generative Modeling

An efficient PyTorch library for deep generative modeling. May the Generative Force (GenForce) be with You.

Updates

Encoder Training: We support training encoders on top of pre-trained GANs for GAN inversion.
Model Converters: You can easily migrate your already started projects to this repository. Please check here for more details.

Highlights

Distributed training framework.
Fast training speed.
Modular design for prototyping new models.
Model zoo containing a rich set of pretrained GAN models, with Colab live demo to play.

Installation

Create a virtual environment via conda.

conda create -n genforce python=3.7
conda activate genforce

Install cuda and cudnn. (We use CUDA 10.0 in case you would like to use TensorFlow 1.15 for model conversion.)
```
conda install cudatoolkit=10.0 cudnn=7.6.5
```
Install torch and torchvision.
```
pip install torch==1.7 torchvision==0.8
```
Install requirements
```
pip install -r requirements.txt
```

Quick Demo

We provide a quick training demo, scripts/stylegan_training_demo.py, which allows to train StyleGAN on a toy dataset (500 animeface images with 64 x 64 resolution). Try it via

./scripts/stylegan_training_demo.sh

We also provide an inference demo, synthesize.py, which allows to synthesize images with pre-trained models. Generated images can be found at work_dirs/synthesis_results/. Try it via

python synthesize.py stylegan_ffhq1024

You can also play the demo at Colab.

Play with GANs

Test

Pre-trained models can be found at model zoo.

On local machine:

GPUS=8
CONFIG=configs/stylegan_ffhq256_val.py
WORK_DIR=work_dirs/stylegan_ffhq256_val
CHECKPOINT=checkpoints/stylegan_ffhq256.pth
./scripts/dist_test.sh ${GPUS} ${CONFIG} ${WORK_DIR} ${CHECKPOINT}

Using slurm:

CONFIG=configs/stylegan_ffhq256_val.py
WORK_DIR=work_dirs/stylegan_ffhq256_val
CHECKPOINT=checkpoints/stylegan_ffhq256.pth
GPUS=8 ./scripts/slurm_test.sh ${PARTITION} ${JOB_NAME} \
    ${CONFIG} ${WORK_DIR} ${CHECKPOINT}

Train

All log files in the training process, such as log message, checkpoints, synthesis snapshots, etc, will be saved to the work directory.

On local machine:

GPUS=8
CONFIG=configs/stylegan_ffhq256.py
WORK_DIR=work_dirs/stylegan_ffhq256_train
./scripts/dist_train.sh ${GPUS} ${CONFIG} ${WORK_DIR} \
    [--options additional_arguments]

Using slurm:

CONFIG=configs/stylegan_ffhq256.py
WORK_DIR=work_dirs/stylegan_ffhq256_train
GPUS=8 ./scripts/slurm_train.sh ${PARTITION} ${JOB_NAME} \
    ${CONFIG} ${WORK_DIR} \
    [--options additional_arguments]

Play with Encoders for GAN Inversion

Train

On local machine:

GPUS=8
CONFIG=configs/stylegan_ffhq256_encoder_y.py
WORK_DIR=work_dirs/stylegan_ffhq256_encoder_y
./scripts/dist_train.sh ${GPUS} ${CONFIG} ${WORK_DIR} \
    [--options additional_arguments]

Using slurm:

CONFIG=configs/stylegan_ffhq256_encoder_y.py
WORK_DIR=work_dirs/stylegan_ffhq256_encoder_y
GPUS=8 ./scripts/slurm_train.sh ${PARTITION} ${JOB_NAME} \
    ${CONFIG} ${WORK_DIR} \
    [--options additional_arguments]

Contributors

Member	Module
Yujun Shen	models and running controllers
Yinghao Xu	runner and loss functions
Ceyuan Yang	data loader
Jiapeng Zhu	evaluation metrics
Bolei Zhou	cheerleader

NOTE: The above form only lists the person in charge for each module. We help each other a lot and develop as a TEAM.

We welcome external contributors to join us for improving this library.

License

The project is under the MIT License.

Acknowledgement

We thank PGGAN, StyleGAN, StyleGAN2, StyleGAN2-ADA for their work on high-quality image synthesis. We thank IDInvert and GHFeat for their contribution to GAN inversion. We also thank MMCV for the inspiration on the design of controllers.

BibTex

We open source this library to the community to facilitate the research of generative modeling. If you do like our work and use the codebase or models for your research, please cite our work as follows.

@misc{genforce2020,
  title =        {GenForce},
  author =       {Shen, Yujun and Xu, Yinghao and Yang, Ceyuan and Zhu, Jiapeng and Zhou, Bolei},
  howpublished = {\url{https://github.com/genforce/genforce}},
  year =         {2020}
}