CHAPTER Gatica-Perez_HANDBOOKOFAMBIENTINTELLIGENCEANDSMARTENVIRONMENTS_2010/IDIAP Visual Attention, Speaking Activity, and Group Conversational Analysis in Multi-Sensor Environments Gatica-Perez, Daniel Odobez, Jean-Marc In H. Nakashima, J. Augusto, H. Aghajan (Eds.,',','), Handbook of Ambient Intelligence and Smart Environments 2010 Springer