Setting the best view of a virtual teacher in a mixed reality physical-task learning support system

摘要

In this research, we investigated the virtual teacher’s positions and orientations that led to optimal learning outcome in mixed-reality environment. First, this study showed that the virtual teacher’s positionand orientation have an effect on learning efficiency, when some teacher-settings are more comfortableand easy to watch than others. A sequence of physical-task learning experiments have been conductedusing mixed-reality technology. The result suggested that the virtual-teacher’s close side-view is theoptimal view for learning physical-tasks that include significant one-hand movements. However, whenboth hands are used, or rotates around, a rotation-angle adjustment becomes necessary. Therefore, weproposed a software automatic-adjustment method governing the virtual teacher’s horizontal rotationangle, so that the learner can easily observe important body motions. The proposed software method wasrevealed to be effective for motions that gradually reposition the most important moving part. Finally,to enhance the proposed method in the future, we conducted an experiment to find out the effect ofsetting the vertical view-angle. The result recommended that the more motion’s rotation involved themore vertical view angles are wanted to see the whole motion clear