On the focusing of thermal images

@article{FandezZanuy2011OnTF,
  title={On the focusing of thermal images},
  author={Marcos Fa{\'u}ndez-Zanuy and Jir{\'i} Mekyska and Virginia Espinosa-Duro},
  journal={Pattern Recognition Letters},
  year={2011},
  volume={32},
  pages={1548-1557}
}