Figure 3.

(A) Frontal and back views of the positions of the 22 markers positioned in this study according to the Davis protocol [30]. Specifically they were placed on the spinal process of C7 and on the spinal process of the sacrum (both visible in the back view) and bilaterally on: the acromion, the Anterior Superior Iliac Spine (ASIS), the greater trochanter, the middle between the greater trochanter and the lateral epicondyle of the femur (with bars 5 cm long), the lateral epicondyle of the femur, the fibula head, the middle between the fibula head and the lateral malleolus (with bars 5 cm long), the lateral malleolus, the first metatarsal phalangeal joint, and the fifth metatarsal phalangeal joint on the lateral aspect of the foot. (B) 2D keypoints (green and blue dots) considered in this work from the Human3.6 dataset. The two blue keypoints in each foot are highlighted because they are not included in [15] and we added them in our training.