selected publications academic article 3D head tracking in video sequences : A robust approach. HAL (Le Centre pour la Communication Scientifique Directe). 2000 conference paper A robust model-based approach for 3D head tracking in video sequences. . 169-174. 2002 MPEG-4 compliant tracking of facial features in video sequences. . 2001 3D global head pose estimation : A robust approach. . 1999 Model-Based Head Tracking and 3D Pose Estimation. . 1998