How to distinguish posed from spontaneous smiles using geometric features

Michel François Valstar, Hatice Gunes, Maja Pantic. How to distinguish posed from spontaneous smiles using geometric features. In Dominic W. Massaro, Kazuya Takeda, Deb Roy, Alexandros Potamianos, editors, Proceedings of the 9th International Conference on Multimodal Interfaces, ICMI 2007, Nagoya, Aichi, Japan, November 12-15, 2007. pages 38-45, ACM, 2007. [doi]

@inproceedings{ValstarGP07,
  title = {How to distinguish posed from spontaneous smiles using geometric features},
  author = {Michel François Valstar and Hatice Gunes and Maja Pantic},
  year = {2007},
  doi = {10.1145/1322192.1322202},
  url = {http://doi.acm.org/10.1145/1322192.1322202},
  researchr = {https://researchr.org/publication/ValstarGP07},
  cites = {0},
  citedby = {0},
  pages = {38-45},
  booktitle = {Proceedings of the 9th International Conference on Multimodal Interfaces, ICMI 2007, Nagoya, Aichi, Japan, November 12-15, 2007},
  editor = {Dominic W. Massaro and Kazuya Takeda and Deb Roy and Alexandros Potamianos},
  publisher = {ACM},
  isbn = {978-1-59593-817-6},
}