Surface-Free Multi-Stroke Trajectory Reconstruction and Word Recognition Using an IMU-Enhanced Digital Pen - Wehbi, Mohamad; Luge, Daniel; Hamann, Tim; Barth, Jens; Kaempf, Peter; Zanca, Dario; Eskofier, Bjoern M. (Friedrich-Alexander-Universität Erlangen-Nürnberg, 2022)