README.md

Learning Efficient GANs for Image Translation via Differentiable Masks and co-Attention Distillation (Link).

Framework of our method. We first build a pre-trained model similar to a GAN network, upon which a differentiable mask is imposed to scale the convolutional outputs of the generator and derive a light-weight one. Then, the co-Attention of the pre-trained GAN and the outputs of the last-layer convolutions of the discriminator are distilled to stabilize the training of the light-weight model.

Tips

Any problem, free to contact the first authors (shaojieli@stu.xmu.edu.cn).

Getting Started

The code has been tested using Pytorch1.5.1 and CUDA10.2 on Ubuntu 18.04.

Please type the command

pip install -r requirements.txt

to install dependencies.

CycleGAN

• Download the Cyclcegan dataset (eg. horse2zebra)

  bash datasets/download_cyclegan_dataset.sh horse2zebra
  

• Download our pre-prepared real statistic information for computing FID, and then copy them to the root directionary of dataset.

  Task	Download
  horse2zebra	Link
  summer2winter	Link

• Train the model using our differentiable masks (eg. horse2zebra)

  bash scripts/cyclegan/horse2zebra/train.sh
  

• Finetune the searched light-weight models with co-Attention distillation

  bash scripts/cyclegan/horse2zebra/finetune.sh
  

Pix2Pix

• Download the Pix2Pix dataset (eg. edges2shoes)

  bash datasets/download_pix2pix_dataset.sh edges2shoes-r
  

• Download our pre-trained real statistic information for computing FID or DRN-D-105 model for computing mIOU, and then copy them to the root directionary of dataset.

  Task	Download
  edges2shoes	Link
  cityscapes	Link

• Train the model using our differentiable masks (eg. edges2shoes)

  bash scripts/pix2pix/edges2shoes/train.sh
  

• Finetune the searched light-weight models with co-Attention distillation

  bash scripts/pix2pix/edges2shoes/finetune.sh
  

Compressed Models

We provide our compressed models in the experiments.

Model	Task	MACs (Compress Rate)	Parameters (Compress Rate)	FID/mIOU	Download
CycleGAN	horse2zebra	3.97G(14.3×)	0.42M(26.9×)	FID:62.41	Link
CycleGAN*	horse2zebra	2.41G(23.6×)	0.28M(40.4×)	FID:62.96	Link
CyclceGAN	zebra2horse	3.50G (16.2×)	0.30M (37.7×)	FID:139.3	Link
CyclceGAN	summer2winter	3.18G (17.9×)	0.24M (47.1×)	FID:78.24	Link
CyclceGAN	winter2summer	4.29G (13.2×)	0.45M (25.1×)	FID:70.97	Link
Pix2Pix	edges2shoes	2.99G (6.22×)	2.13M (25.5×)	FID:46.95	Link
Pix2Pix*	edges2shoes	4.30G (4.32×)	0.54M (100.7×)	FID:24.08	Link
Pix2Pix	cityscapes	3.96G (4.70×)	1.73M (31.4×)	mIOU:40.53	Link
Pix2Pix*	cityscapes	4.39G (4.24×)	0.55M (98.9×)	mIOU:41.47	Link

* indicates that a generator with separable convolutions is adopted

You can use the following code to test our compression models.

python test.py 
--dataroot ./database/horse2zebra
--model cyclegan
--load_path ./result/horse2zebra.pth

Acknowledgements

Our code is developed based on pytorch-CycleGAN-and-pix2pix and GAN Compression.