@article{focalandefficientioulossforaccurate,
  title = {Focal and Efficient IOU Loss for Accurate Bounding Box Regression},
  author = {Yi-Fan Zhang and Weiqiang Ren and Zhang Zhang and Zhen Jia and Liang Wang and Tieniu Tan},
  year = {2021},
  eprint = {2101.08158},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2101.08158v2},
}