Alberto Abad Cristian Canton-Ferrer Carlos Segura José Luis Landabaso Dusan Macho Josep R. Casas Javier Hernando Montse Pardàs Climent Nadeu UPC Audio, Video and Multimodal Person Tracking Systems in the Clear Evaluation Campaign. 93-104 2006 conf/clear/2006 CLEAR http://dx.doi.org/10.1007/978-3-540-69568-4_6 db/conf/clear/clear2006.html#AbadCSLMCHPN06