Figure A3.

OpenPose keypoint detection examples depicting pose estimation during sprinting. Blue circles depict the 2D OpenPose keypoint locations with the circle fill colour representing the left (green) and right (red) sides of the body. Cubes depict the 3D reconstructed joint centres for the left (green) and right (red) sides of the body projected onto the 2D image plane. This example demonstrates overall good quality 2D detections and 3D reconstruction. Errors in the detection of the right foot can be observed, however, this will largely be corrected during the 3D fusion process which will use detections from other fields of view.