Low-cost 3D motion capture system using passive optical markers and monocular vision

This paper presents a low-cost 3D motion capture system using a single camera and passive optical markers. 3D motion capture systems usually demand multiple cameras. Thus, those systems require high-cost hardware devices and large computing power. However, such high-cost systems prevent personal or mobile systems using 3D motion capturing. To overcome this problem, we propose a low-cost motion capture system. The structure of our system is based on a single camera and passive optical markers, which enables the system to be low-cost. As the components of the proposed systems, we introduce 2D optical marker recognition, marker size recognition, and mapping for 3D data extraction. To show the effectiveness and efficiency, we conduct preliminary experiments in terms of accuracy and time-complexity. Experiment results indicate that the proposed system provides 3D motion capturing using a single camera enough to utilize it in 3D interaction.