Immersion is one of the most important aspects in ensuring the applicability
of Virtual Reality systems to training regimes aiming to improve
performance. To ensure that this key aspect is met, the registration of motion
between the real world and virtual environment must be made as accurate and
as low latency as possible. Thus, an in-house developed Inertial Measurement
Unit (IMU) system is developed for use in tracking the movement of the
player’s racquet. This IMU tracks 6 DOF motion data and transmits it to the
mobile training system for processing. Physically, the custom motion is built
into the shape of a racquet grip to give a more natural sensation when
swinging the racquet. In addition to that, an adaptive filter framework is also
established to cope with different racquet movements automatically, enabling
real-time 6 DOF tracking by balancing the jitter and latency. Experiments are
performed to compare the efficacy of our approach with other conventional
tracking methods such as the using Microsoft Kinect. The results obtained
demonstrated noticeable accuracy and lower latency when compared with the
aforementioned methods.