data_prepare_en.md

## data prepare

The config will suppose your data put in `$PaddleGAN/data`. You can symlink your datasets to `$PaddleGAN/data`.

```
PaddleGAN
|-- configs
|-- data
|   |-- cityscapes
|   |   ├── test
|   |   ├── testA
|   |   ├── testB
|   |   ├── train
|   |   ├── trainA
|   |   └── trainB
|   ├── horse2zebra
|   |   ├── testA
|   |   ├── testB
|   |   ├── trainA
|   |   └── trainB
|   └── facades
|       ├── test
|       ├── train
|       └── val
|-- docs
|-- ppgan
|-- tools

```

if you put your datasets on other place，for example ```your/data/path```,
you can also change ```dataroot``` in config file:

```
dataset:
  train:
    name: PairedDataset
    dataroot: your/data/path
    num_workers: 4
```

### Datasets of CycleGAN

#### download existed datasets

##### download form website
datasets for CycleGAN you can download from [here](https://people.eecs.berkeley.edu/~taesung_park/CycleGAN/datasets/)

##### download by script
You can use ```download_cyclegan_data.py``` in ```PaddleGAN/data``` to download datasets you wanted. Supported datasets are: apple2orange, summer2winter_yosemite,horse2zebra, monet2photo, cezanne2photo, ukiyoe2photo, vangogh2photo, maps, cityscapes, facades, iphone2dslr_flower, ae_photos, cityscapes。

run following command. Dataset will be downloaded to ```~/.cache/ppgan``` and symlink to ```PaddleGAN/data/``` .
```
python data/download_cyclegan_data.py --name horse2zebra
```

#### custom dataset
Data should be arranged in following way if you use custom dataset.
```
custom_datasets
├── testA
├── testB
├── trainA
└── trainB
```

### Datasets of Pix2Pix

#### download existed datasets

##### download from website
dataset for pix2pix you can download from [here](hhttps://people.eecs.berkeley.edu/~tinghuiz/projects/pix2pix/datasets/)

##### download by script
You can use ```download_pix2pix_data.py``` in ```PaddleGAN/data``` to download datasets you wanted. Supported datasets are: apple2orange, summer2winter_yosemite,horse2zebra, monet2photo, cezanne2photo, ukiyoe2photo, vangogh2photo, maps, cityscapes, facades, iphone2dslr_flower, ae_photos, cityscapes.

run following command. Dataset will be downloaded to ```~/.cache/ppgan``` and symlink to ```PaddleGAN/data/``` .
```
python data/download_pix2pix_data.py --name cityscapes
```

#### custom datasets
Data should be arranged in following way if you use custom dataset. And image content shoubld be same with example image.

```
facades
├── test
├── train
└── val
```

![](./imgs/1.jpg)