Capturing Jaw Movement Using Two-Magnet System.
Shin Yabukami, Hiroyasu Kanetaka, N. Tsuji, A. Itagaki, M. Yamaguchi, K. Arai, H. Mitani · Journal of the Magnetics Society of Japan · 2002
We developed a new motion-capture system for jaw movement using two magnets and two-axial fluxgate sensors. Two magnets are fixed to a tooth in the lower jaw and to the forehead. The system can naturally detect the jaw movement as a rigid body because the system has no need for attachments such as a clutch inside the mouth or a magnetic field sensor array in contact with the head.