A new system for automatic jaw and lips movement 3D analysis in speech production is presented. The system (ELITE) uses small, non obtrusive, passive markers of .5mm of diameter attached on the speaking subject in six repere points. Two TV cameras survey the scene and the markers are detected by means of a cross-correlation algorithm implemented by a real-time dedicated hardware at a sampling rate of 50Hz. The 3D coordinates of the markers are automatically computed with a standard deviation error of .lmm, by a generalized stereophotogrammetric algorithm which allows a free camera positioning and requires a short time for set-up. The results of preliminary studies on lips rounding movement in coarticulation are presented.
Bibliographic reference. Caldognetto, E. Magno / Vagges, K. / Borghese, N. A. / Ferrigno, G. (1989): "Automatic analysis of lips and jaw kinematics in VCV sequences", In EUROSPEECH-1989, 2453-2456.