This implementation is based on this document (in Japanese).
$ python main.py
$ python main.py --cuda
$ python predict.py --model model_epoch_1000.pth --input_image val/image/000.png --output_filename='temp.png'
$ python predict.py --model model_epoch_1000.pth --input_image val/image/000.png --output_filename='temp.png' --cuda