Visualization system for the information measured by motion capture system

Abstract

This study aims to propose a system to visualize the velocity of motion, velocity/change of acceleration, and shape of trajectory based on the information measured by optical motion capture systems. It is difficult to figure out the above-mentioned information only by physical movements. The system uses various sizes of spheres and trigonal pyramids as well as colors and line segments to express velocity of motion, acceleration of motion, and changes in direction by showing them in a three-dimensional space following the motion trajectories. We conducted a questionnaire survey on the 20 participants of the study, asking them to evaluate whether or not the proposed system was easy to perceive the velocity of motion, acceleration and the change in direction. As a result, we found the system appropriate enough to show velocity and acceleration, and to show a detailed direction.