@conference {, title = {Capturing Upper Body Motion in Conversation: an Appearance Quasi-Invariant Approach}, booktitle = {16th International Conference on Multimodal Interaction (ICMI2014)}, year = {2014}, month = {11/2014}, pages = {327-334}, address = {Estambul, Turquia}, isbn = {978-1-4503-2885}, doi = {10.1145/2663204.2663267}, author = {Marta Marron and D. Gatica and Daniel Pizarro} }