Method of Dexterous Finger Unit Full-pose Modeling Based on Magnetic-inertial Sensor Fusion

As an important natural medium for human-environment-interaction, human hand takes advantages of high degrees of flexibility and complexity, and efficient and accurate hand motion and gesture recognition is of great significance for realizing hand-based human-machine-environment integration. A method for constructing a personalized dexterous finger unit full-pose information based on the magnetic-inertial sensor information fusion technology is proposed, in order to provide technical support for accurate human-machine-environment perception and inclusiveness. Combined with the biological structural constraints of the phalanx of the hand, a finger unit kinematics model was established. Through the structured magnetic field marking technology, a magnetic-inertial information fusion finger unit full-pose deriving system is developed, and the construction of a personal parameterized finger unit model is completed. The continuous path comparison test and single-point positioning accuracy verification test of different volunteer finger units proved that the proposed method for personalized finger unit full-pose information derivation based on magnetic-inertial sensor information fusion technology can achieve a positioning accuracy between [1.43, 2.81] mm.