Multi-color LED Marker for Dynamic Target Tracking in Wide Area

To present augmented reality in dynamic scenes like sports, a wide tracking range is required as well as accuracy and speed. Conventional tracking markers had a complicated shape, which resulted in being weak against image blur and low image resolution, leading to a narrow tracking range. This paper proposes multi-color LED markers for tracking a dynamic object in a wide area. They can emit consistent light and express a unique ID by a few color pixels, which are efficiently extracted using a camera's short exposure time. This marker was tested at various distances and fast rotation, where the high identification accuracy was evaluated.