Immersive Visualization for Guiding Limbs Movement of Tai-Chi Chuan in Mixed Reality

As the popularization of immersive head-mounted display, students can practice with virtual instructors in any place with the help of virtual reality. The system can provide multiple information of motion with the pre-recorded digital performance of Tai-Chi Chuan, for example, simultaneous observation of multiple angles of demonstration by coach and personalized speed of motion playing. Head-mounted display provides multiple ways of visualization of virtual instructors, however, students lack their own motion information and didn’t know how much correctness of it was. This research based on mobile virtual reality device and used the immersive visualization to conduct two methods for observing their own movement: (1) Video See-Through Image and (2) Augmented Mirror. By transmitting the image of reality to the virtual environment, students can also observe their own limbs movement via images of 1st person view and augmented mirror (3rd person view) while observing the instructors. This process of guiding achieves the goal of watching and correcting the limbs movement in mixed reality environment. The result of this research shows that the most appropriate size of 1st person view is in 75% of virtual environment. In contrast to immersive augmented reality, users can finish the indicated task they asked to do without any kind of sickness in this size. On the other hand, student thought the augmented mirror is helpful to display the information of body. As the result on motion performance, augmented mirror brings more correctness to the upper limbs movement.