Full-Body Movement Guidance For Learning Tai Chi Chuan With A Video See-Through Head-Mounted Display.
Date Issued
2015
Date
2015
Author(s)
Hsieh, Chen-Hsin
Abstract
People are paying more and more attention to having good exercise habits in this aging society. The advancement of technology grants the possibility of learning various kinds of exercises using various multi-media equipment. For instance, Tai Chi Chuan movements can be learned through watching instruction videos. Through this method, users can examine the teacher demonstrating most important parts of movements. However, multi-media videos not only lack feedback information but also only let users understand the movements by showing the plane images. In a traditional exercise class, the movements of students are taught by a teacher directly. Without a teacher, students would have difficulty learning movements by themselves. This research provides users a way in the first-person point of view to learn Tai Chi Chuan through combining the video see-through head-mounted display and depth camera. It contains the method for skeleton calibration and two different kinds of guidance are designed to carry out in Augmented Reality (AR). One is Coach-Surrounding guidance. In this approach, virtual coaches are set surrounding the user. Virtual coaches allow the user to see demonstration movement from different viewing angles. Thus users can acquire more visual information of the movement which allow them to gain a clearer understanding. The other is Ball-Following guidance. In this approach, we set virtual balls on certain joint points and require user to follow virtual balls in Augmented Reality (AR) in order to promote the accuracy of movements. Finally, we conducted three user studies-a posture study, a movement study, and a Tai Chi Chuan study. Both posture and movement studies show common results that combined Coach-Surrounding and Ball-Following guidance can promote the accuracy of movements. In addition, it is easier for users to understand the physical action. Exceeding our expectations, participants performed postures with an average error of 0.142m, and performed movement with an average error of 0.144m.
Subjects
Augmented Reality
Body Movement Guidance
Egocentric Hints
Tai Chi Chuan
Head-Mounted Display
Type
thesis
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