Fig. 8

An example image from the HumanEva dataset used to validate markerless systems within computer vision. White dots indicate the location of tracked reflective markers and the cyan lines represent the defined skeleton model fit to the marker data. Although useful as an early benchmark for markerless tracking systems, the dataset has clear limitations for assessing the quality of any markerless tracking results, especially in the context of biomechanics. Notice that the markers are attached to clothing, marker clusters are not utilised, and the joint centres inferred from the fitted skeleton are not closely aligned with how the person appears in the image (e.g. right elbow and hip joints). See further information in the text