ResViT

Official Pytorch Implementation of Residual Vision Transformers(ResViT) which is described in the following paper:

Onat Dalmaz and Mahmut Yurt and Tolga Çukur ResViT: Residual vision transformers for multi-modal medical image synthesis. arXiv. 2021.

Dependencies

python>=3.6.9
torch>=1.7.1
torchvision>=0.8.2
visdom
dominate
cuda=>11.2

Installation

• Clone this repo:

git clone https://github.com/icon-lab/ResViT
cd ResViT

Download pre-trained ViT models from Google

• Pre-trained ViT models:

wget https://storage.googleapis.com/vit_models/imagenet21k/R50-ViT-B_16.npz &&
mkdir ../model/vit_checkpoint/imagenet21k &&
mv {MODEL_NAME}.npz ../model/vit_checkpoint/imagenet21k/R50-ViT-B_16.npz

Dataset

You should structure your aligned dataset in the following way:

/Datasets/BRATS/
  ├── T1_T2
  ├── T2_FLAIR
  .
  .
  ├── T1_FLAIR_T2   

/Datasets/BRATS/T2__FLAIR/
  ├── train
  ├── val  
  ├── test   

Note that for many-to-one tasks, source modalities should be in the Red and Green channels. (For 2 input modalities)

Pre-training of ART blocks without the presence of transformers

For many-to-one tasks:
python3 train.py --dataroot Datasets/IXI/T1_T2__PD/ --name T1_T2_PD_IXI_pre_trained --gpu_ids 0 --model resvit_many --which_model_netG res_cnn --which_direction AtoB --lambda_A 100 --dataset_mode aligned --norm batch --pool_size 0 --output_nc 1 --input_nc 3 --loadSize 256 --fineSize 256 --niter 50 --niter_decay 50 --save_epoch_freq 5 --checkpoints_dir checkpoints/ --display_id 0

For one-to-one tasks:
python3 train.py --dataroot Datasets/IXI/T1_T2/ --name T1_T2_IXI_pre_trained --gpu_ids 0 --model resvit_one --which_model_netG res_cnn --which_direction AtoB --lambda_A 100 --dataset_mode aligned --norm batch --pool_size 0 --output_nc 1 --input_nc 1 --loadSize 256 --fineSize 256 --niter 50 --niter_decay 50 --save_epoch_freq 5 --checkpoints_dir checkpoints/ --display_id 0

Fine tune ResViT

For many-to-one tasks:
python3 train.py --dataroot Datasets/IXI/T1_T2__PD/ --name T1_T2_PD_IXI_resvit --gpu_ids 0 --model resvit_many --which_model_netG resvit --which_direction AtoB --lambda_A 100 --dataset_mode aligned --norm batch --pool_size 0 --output_nc 1 --input_nc 3 --loadSize 256 --fineSize 256 --niter 25 --niter_decay 25 --save_epoch_freq 5 --checkpoints_dir checkpoints/ --display_id 0 --pre_trained_transformer 1 --pre_trained_resnet 1 --pre_trained_path checkpoints/T1_T2_PD_IXI_pre_trained/latest_net_G.pth --lr 0.001

For one-to-one tasks:
python3 train.py --dataroot Datasets/IXI/T1_T2/ --name T1_T2_IXI_resvit --gpu_ids 0 --model resvit_one --which_model_netG resvit --which_direction AtoB --lambda_A 100 --dataset_mode aligned --norm batch --pool_size 0 --output_nc 1 --input_nc 1 --loadSize 256 --fineSize 256 --niter 25 --niter_decay 25 --save_epoch_freq 5 --checkpoints_dir checkpoints/ --display_id 0 --pre_trained_transformer 1 --pre_trained_resnet 1 --pre_trained_path checkpoints/T1_T2_IXI_pre_trained/latest_net_G.pth --lr 0.001

Testing

For many-to-one tasks:
python3 test.py --dataroot Datasets/IXI/T1_T2__PD/ --name T1_T2_PD_IXI_resvit --gpu_ids 0 --model resvit_many --which_model_netG resvit --dataset_mode aligned --norm batch --phase test --output_nc 1 --input_nc 3 --how_many 10000 --serial_batches --fineSize 256 --loadSize 256 --results_dir results/ --checkpoints_dir checkpoints/ --which_epoch latest

For one-to-one tasks:
python3 test.py --dataroot Datasets/IXI/T1_T2/ --name T1_T2_IXI_resvit --gpu_ids 0 --model resvit_one --which_model_netG resvit --dataset_mode aligned --norm batch --phase test --output_nc 1 --input_nc 1 --how_many 10000 --serial_batches --fineSize 256 --loadSize 256 --results_dir results/ --checkpoints_dir checkpoints/ --which_epoch latest

Citation

You are encouraged to modify/distribute this code. However, please acknowledge this code and cite the paper appropriately.

@misc{dalmaz2021resvit,
      title={ResViT: Residual vision transformers for multi-modal medical image synthesis}, 
      author={Onat Dalmaz and Mahmut Yurt and Tolga Çukur},
      year={2021},
      eprint={2106.16031},
      archivePrefix={arXiv},
      primaryClass={eess.IV}
}

For any questions, comments and contributions, please contact Onat Dalmaz (onat[at]ee.bilkent.edu.tr)

(c) ICON Lab 2021

Acknowledgments

This code uses libraries from pGAN and pix2pix repository.