@article{,
  title={Unsupervised Deep Exemplar Colorization via Pyramid Dual Non-local Attention},
  author={Wang, Hanzhang and Zhai, Deming and Liu, Xianming and Jiang, Junjun and Gao, Wen},
  journal={IEEE Transactions on Image Processing (TIP)},
  year={2023},
  publisher={IEEE}
}