Roberto Brunelli Alessio Brutti Paul Chippendale Oswald Lanz Maurizio Omologo Piergiorgio Svaizer Francesco Tobia A Generative Approach to Audio-Visual Person Tracking. 55-68 2006 conf/clear/2006 CLEAR http://dx.doi.org/10.1007/978-3-540-69568-4_3 db/conf/clear/clear2006.html#BrunelliBCLOST06