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Super Resolution Examples

SRGAN Architecture

Prepare Data and Pre-trained VGG

    1. You need to download the pretrained VGG19 model weights in here.
    1. You need to have the high resolution images for training.
    • In this experiment, I used images from DIV2K - bicubic downscaling x4 competition, so the hyper-paremeters in config.py (like number of epochs) are seleted basic on that dataset, if you change a larger dataset you can reduce the number of epochs.
    • If you dont want to use DIV2K dataset, you can also use Yahoo MirFlickr25k, just simply download it using train_hr_imgs = tl.files.load_flickr25k_dataset(tag=None) in main.py.
    • If you want to use your own images, you can set the path to your image folder via config.TRAIN.hr_img_path in config.py.

Run

πŸ”₯πŸ”₯πŸ”₯πŸ”₯πŸ”₯πŸ”₯ You need install TensorLayerX at first!

πŸ”₯πŸ”₯πŸ”₯πŸ”₯πŸ”₯πŸ”₯ Please install TensorLayerX via source

pip install git+https://github.com/tensorlayer/tensorlayerx.git 

Train

config.TRAIN.img_path = "your_image_folder/"

Your directory structure should look like this:

srgan/
    └── config.py
    └── srgan.py
    └── train.py
    └── vgg.py
    └── model
          └── vgg19.npy
    └── DIV2K
          └── DIV2K_train_HR
          β”œβ”€β”€ DIV2K_train_LR_bicubic
          β”œβ”€β”€ DIV2K_valid_HR
          └── DIV2K_valid_LR_bicubic

  • Start training.
python train.py

πŸ”₯Modify a line of code in train.py, easily switch to any framework!

import os
os.environ['TL_BACKEND'] = 'tensorflow'
# os.environ['TL_BACKEND'] = 'mindspore'
# os.environ['TL_BACKEND'] = 'paddle'
# os.environ['TL_BACKEND'] = 'pytorch'

🚧 We will support PyTorch as Backend soon.

Evaluation.

πŸ”₯ We have trained SRGAN on DIV2K dataset. πŸ”₯ Download model weights as follows.

SRGAN_g SRGAN_d
TensorFlow Baidu, Googledrive Baidu, Googledrive
PaddlePaddle Baidu, Googledrive Baidu, Googledrive
MindSpore 🚧Coming soon! 🚧Coming soon!
PyTorch 🚧Coming soon! 🚧Coming soon!

Download weights file and put weights under the folder srgan/models/.

Your directory structure should look like this:

srgan/
    └── config.py
    └── srgan.py
    └── train.py
    └── vgg.py
    └── model
          └── vgg19.npy
    └── DIV2K
          β”œβ”€β”€ DIV2K_train_HR
          β”œβ”€β”€ DIV2K_train_LR_bicubic
          β”œβ”€β”€ DIV2K_valid_HR
          └── DIV2K_valid_LR_bicubic
    └── models
          β”œβ”€β”€ g.npz  # You should rename the weigths file. 
          └── d.npz  # If you set os.environ['TL_BACKEND'] = 'tensorflow',you should rename srgan-g-tensorflow.npz to g.npz .

  • Start evaluation.
python train.py --mode=eval

Results will be saved under the folder srgan/samples/.

Results

Reference

Citation

If you find this project useful, we would be grateful if you cite the TensorLayer paper:

@article{tensorlayer2017,
author = {Dong, Hao and Supratak, Akara and Mai, Luo and Liu, Fangde and Oehmichen, Axel and Yu, Simiao and Guo, Yike},
journal = {ACM Multimedia},
title = {{TensorLayer: A Versatile Library for Efficient Deep Learning Development}},
url = {http://tensorlayer.org},
year = {2017}
}

@inproceedings{tensorlayer2021,
  title={TensorLayer 3.0: A Deep Learning Library Compatible With Multiple Backends},
  author={Lai, Cheng and Han, Jiarong and Dong, Hao},
  booktitle={2021 IEEE International Conference on Multimedia \& Expo Workshops (ICMEW)},
  pages={1--3},
  year={2021},
  organization={IEEE}
}

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