@inproceedings{Fu2021a,
  author = "T. Fu and Z. Cheng and J. Hu and L. Guo and S. Wang and X. Zhao and D. Zhou and Y. Song",
  title = "Quality enhancement of VVC intra-frame coding based on HGRDN",
  year = 2021,
  booktitle = "4th Challenge on Learned Image Compression",
  month = "Jun"
}