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Tensorflow implementation for learning an image-to-image translation without input-output pairs. https://arxiv.org/pdf/1703.10593.pdf

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CycleGAN

Tensorflow implementation for learning an image-to-image translation without input-output pairs. The method is proposed by Jun-Yan Zhu in Unpaired Image-to-Image Translation using Cycle-Consistent Adversarial Networkssee. For example in paper:

Update Results

The results of this implementation:

  • Horses -> Zebras

  • Zebras -> Horses

You can download the pretrained model from this url and extract the rar file to ./checkpoint/.

Prerequisites

  • tensorflow r1.1
  • numpy 1.11.0
  • scipy 0.17.0
  • pillow 3.3.0

Getting Started

Installation

git clone https://github.com/xhujoy/CycleGAN-tensorflow
cd CycleGAN-tensorflow

Train

  • Download a dataset (e.g. zebra and horse images from ImageNet):
bash ./download_dataset.sh horse2zebra
  • Train a model:
CUDA_VISIBLE_DEVICES=0 python main.py --dataset_dir=horse2zebra
  • Use tensorboard to visualize the training details:
tensorboard --logdir=./logs

Test

  • Finally, test the model:
CUDA_VISIBLE_DEVICES=0 python main.py --dataset_dir=horse2zebra --phase=test --which_direction=AtoB

Training and Test Details

To train a model,

CUDA_VISIBLE_DEVICES=0 python main.py --dataset_dir=/path/to/data/ 

Models are saved to ./checkpoints/ (can be changed by passing --checkpoint_dir=your_dir).

To test the model,

CUDA_VISIBLE_DEVICES=0 python main.py --dataset_dir=/path/to/data/ --phase=test --which_direction=AtoB/BtoA

Datasets

Download the datasets using the following script:

bash ./download_dataset.sh dataset_name
  • facades: 400 images from the CMP Facades dataset.
  • cityscapes: 2975 images from the Cityscapes training set.
  • maps: 1096 training images scraped from Google Maps.
  • horse2zebra: 939 horse images and 1177 zebra images downloaded from ImageNet using keywords wild horse and zebra.
  • apple2orange: 996 apple images and 1020 orange images downloaded from ImageNet using keywords apple and navel orange.
  • summer2winter_yosemite: 1273 summer Yosemite images and 854 winter Yosemite images were downloaded using Flickr API. See more details in our paper.
  • monet2photo, vangogh2photo, ukiyoe2photo, cezanne2photo: The art images were downloaded from Wikiart. The real photos are downloaded from Flickr using combination of tags landscape and landscapephotography. The training set size of each class is Monet:1074, Cezanne:584, Van Gogh:401, Ukiyo-e:1433, Photographs:6853.
  • iphone2dslr_flower: both classe of images were downlaoded from Flickr. The training set size of each class is iPhone:1813, DSLR:3316. See more details in our paper.

Reference

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Tensorflow implementation for learning an image-to-image translation without input-output pairs. https://arxiv.org/pdf/1703.10593.pdf

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