@article{yan2017focal,
  title={Focal length estimation guided with object distribution on FocaLens dataset},
  author={Yan, Han and Zhang, Yu and Zhang, Shunli and Zhao, Sicong and Zhang, Li},
  journal={Journal of Electronic Imaging},
  volume={26},
  number={3},
  pages={033018},
  year={2017},
  publisher={International Society for Optics and Photonics}
}