TY - CONF T1 - Face likelihood functions for visual tracking in intelligent spaces T2 - IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics SocietyIECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society Y1 - 2013 A1 - Frank Sanabria-Macias A1 - Enrique Marañón-Reyes A1 - Soto-Vega, Pedro A1 - Marta Marron A1 - Javier Macias-Guarasa A1 - Daniel Pizarro JF - IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics SocietyIECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society PB - IEEE CY - Vienna, Austria ER -