🦙 LaMa: Resolution-robust Large Mask Inpainting with Fourier Convolutions

Official implementation by Samsung Research

by Roman Suvorov, Elizaveta Logacheva, Anton Mashikhin, Anastasia Remizova, Arsenii Ashukha, Aleksei Silvestrov, Naejin Kong, Harshith Goka, Kiwoong Park, Victor Lempitsky.

🔥🔥🔥
LaMa generalizes surprisingly well to much higher resolutions (~2k❗️) than it saw during training (256x256), and achieves the excellent performance even in challenging scenarios, e.g. completion of periodic structures.

[Project page] [arXiv] [Supplementary] [BibTeX]

Try out in Google Colab

Environment setup

Clone the repo: git clone https://github.com/saic-mdal/lama.git

There are three options of an environment:

1. Python virtualenv:

   virtualenv inpenv --python=/usr/bin/python3
   source inpenv/bin/activate
   pip install torch==1.8.0 torchvision==0.9.0
   
   cd lama
   pip install -r requirements.txt 
   

2. Conda

   % Install conda for Linux, for other OS download miniconda at https://docs.conda.io/en/latest/miniconda.html
   wget https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-x86_64.sh
   bash Miniconda3-latest-Linux-x86_64.sh -b -p $HOME/miniconda
   $HOME/miniconda/bin/conda init bash
   
   cd lama
   conda env create -f conda_env.yml
   conda activate lama
   conda install pytorch torchvision torchaudio cudatoolkit=10.2 -c pytorch -y
   pip install pytorch-lightning==1.2.9
   

3. Docker: No actions are needed 🎉.

Inference

Run

cd lama
export TORCH_HOME=$(pwd) && export PYTHONPATH=.

1. Download pre-trained models

Install tool for yandex disk link extraction:

pip3 install wldhx.yadisk-direct

The best model (Places2, Places Challenge):

curl -L $(yadisk-direct https://disk.yandex.ru/d/ouP6l8VJ0HpMZg) -o big-lama.zip
unzip big-lama.zip

All models (Places & CelebA-HQ):

curl -L $(yadisk-direct https://disk.yandex.ru/d/EgqaSnLohjuzAg) -o lama-models.zip
unzip lama-models.zip

2. Prepare images and masks

Download test images:

curl -L $(yadisk-direct https://disk.yandex.ru/d/xKQJZeVRk5vLlQ) -o LaMa_test_images.zip
unzip LaMa_test_images.zip

OR prepare your data:

1) Create masks named as `[images_name]_maskXXX[image_suffix]`, put images and masks in the same folder.

• You can use the script for random masks generation.
• Check the format of the files:

  image1_mask001.png
  image1.png
  image2_mask001.png
  image2.png
  

2. Specify image_suffix, e.g. .png or .jpg or _input.jpg in configs/prediction/default.yaml.

3. Predict

On the host machine:

python3 bin/predict.py model.path=$(pwd)/big-lama indir=$(pwd)/LaMa_test_images outdir=$(pwd)/output

OR in the docker

The following command will pull the docker image from Docker Hub and execute the prediction script

bash docker/2_predict.sh $(pwd)/big-lama $(pwd)/LaMa_test_images $(pwd)/output device=cpu

Docker cuda: TODO

Train and Eval

⚠️ Warning: The training is not fully tested yet, e.g., did not re-training after refactoring ⚠️

Make sure you run:

cd lama
export TORCH_HOME=$(pwd) && export PYTHONPATH=.

Then download models for perceptual loss:

mkdir -p ade20k/ade20k-resnet50dilated-ppm_deepsup/
wget -P ade20k/ade20k-resnet50dilated-ppm_deepsup/ http://sceneparsing.csail.mit.edu/model/pytorch/ade20k-resnet50dilated-ppm_deepsup/encoder_epoch_20.pth

Places

On the host machine:

# Download data from http://places2.csail.mit.edu/download.html
# Places365-Standard: Train(105GB)/Test(19GB)/Val(2.1GB) from High-resolution images section
wget http://data.csail.mit.edu/places/places365/train_large_places365standard.tar
wget http://data.csail.mit.edu/places/places365/val_large.tar
wget http://data.csail.mit.edu/places/places365/test_large.tar

# Unpack and etc.
bash fetch_data/places_standard_train_prepare.sh
bash fetch_data/places_standard_test_val_prepare.sh
bash fetch_data/places_standard_evaluation_prepare_data.sh

# Sample images for test and viz at the end of epoch
bash fetch_data/places_standard_test_val_sample.sh
bash fetch_data/places_standard_test_val_gen_masks.sh

# Run training
# You can change bs with data.batch_size=10
python bin/train.py -cn lama-fourier location=places_standard

# Infer model on thick/thin/medium masks in 256 and 512 and run evaluation 
# like this:
python3 bin/predict.py \
model.path=$(pwd)/experiments/<user>_<date:time>_lama-fourier_/ \
indir=$(pwd)/places_standard_dataset/evaluation/random_thick_512/ \
outdir=$(pwd)/inference/random_thick_512 model.checkpoint=last.ckpt

python3 bin/evaluate_predicts.py \
$(pwd)/configs/eval_2gpu.yaml \
$(pwd)/places_standard_dataset/evaluation/random_thick_512/ \
$(pwd)/inference/random_thick_512 $(pwd)/inference/random_thick_512_metrics.csv

Docker: TODO

CelebA

On the host machine:

TODO: download & prepare 
TODO: trian
TODO: eval

Docker: TODO

Places Challenge

On the host machine:

# This script downloads multiple .tar files in parallel and unpacks them
# Places365-Challenge: Train(476GB) from High-resolution images (to train Big-Lama) 
bash places_challenge_train_download.sh

TODO: prepare
TODO: train 
TODO: eval

Docker: TODO

Create your data

On the host machine:

Explain explain explain

TODO: format
TODO: configs 
TODO: run training
TODO: run eval

OR in the docker:

TODO: train
TODO: eval

Hints

Generate different kinds of masks

The following command will execute a script that generates random masks.

bash docker/1_generate_masks_from_raw_images.sh \
    configs/data_gen/random_medium_512.yaml \
    /directory_with_input_images \
    /directory_where_to_store_images_and_masks \
    --ext png

The test data generation command stores images in the format, which is suitable for prediction.

The table below describes which configs we used to generate different test sets from the paper. Note that we do not fix a random seed, so the results will be slightly different each time.

	Places 512x512	CelebA 256x256
Narrow	random_thin_512.yaml	random_thin_256.yaml
Medium	random_medium_512.yaml	random_medium_256.yaml
Wide	random_thick_512.yaml	random_thick_256.yaml

Feel free to change the config path (argument #1) to any other config in configs/data_gen or adjust config files themselves.

Override parameters in configs

Also you can override parameters in config like this:

python3 bin/train.py -cn <config> data.batch_size=10 run_title=my-title

Where .yaml file extension is omitted

Models options

Config names for models from paper (substitude into the training command):

* big-lama
* big-lama-regular
* lama-fourier
* lama-regular
* lama_small_train_masks

Which are seated in configs/training/folder

Links

• All the data (models, test images, etc.) https://disk.yandex.ru/d/AmdeG-bIjmvSug
• Test images from the paper https://disk.yandex.ru/d/xKQJZeVRk5vLlQ
• The pre-trained models https://disk.yandex.ru/d/EgqaSnLohjuzAg
• The models for perceptual loss https://disk.yandex.ru/d/ncVmQlmT_kTemQ
• Our training logs are available at https://disk.yandex.ru/d/9Bt1wNSDS4jDkQ

Training time & resources

TODO

Acknowledgments

• Segmentation code and models if form CSAILVision.
• LPIPS metric is from richzhang
• SSIM is from Po-Hsun-Su
• FID is from mseitzer

Citation

If you found this code helpful, please consider citing:

@article{suvorov2021resolution,
  title={Resolution-robust Large Mask Inpainting with Fourier Convolutions},
  author={Suvorov, Roman and Logacheva, Elizaveta and Mashikhin, Anton and Remizova, Anastasia and Ashukha, Arsenii and Silvestrov, Aleksei and Kong, Naejin and Goka, Harshith and Park, Kiwoong and Lempitsky, Victor},
  journal={arXiv preprint arXiv:2109.07161},
  year={2021}
}