Real-Time Passive Magnetic Localization Based on Restricted Kinematic Property for Tongue-Computer-Interface

For severe paralyzed individuals, free communications with the environment are of great importance. However, constrained by their body functions, available interaction technologies are limited. Tongue-computer-interface based on passive magnetic marking takes advantages of high flexibility and fatigue-resistance in physiological sense, and provides a basis for a self-sufficiency life. As control signals, the real-time tongue movements are required to be derived by solving a nonlinear inverse magnetic problem with forward magnetic dipole model. This paper proposes a combined localization algorithm with pre-calibrated location-orientation mapping database based on restricted kinematic property of target motion. The simulation results show that the developed localization method can provide improved tracking accuracy with good real-time capability.