@INPROCEEDINGS{Liciotti2017,
  author = {D. Liciotti and T. Duckett and N. Bellotto and E. Frontoni and P.
	ZIngaretti},
  title = {{HMM-based Activity Recognition with a Ceiling RGB-D Camera}},
  booktitle = {Proc. of Int. Conf. on Pattern Recognition Applications and Methods
	(ICPRAM)},
  year = {2017}
}