@ARTICLE{9466446,
  author={Qian, Xinyuan and Liu, Qi and Wang, Jiadong and Li, Haizhou},
  journal={IEEE Signal Processing Letters}, 
  title={Three-Dimensional Speaker Localization: Audio-Refined Visual Scaling Factor Estimation}, 
  year={2021},
  volume={28},
  number={},
  pages={1405-1409},
  doi={10.1109/LSP.2021.3092959}}