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The human skeleton presentation used in our paper. This skeleton model presents 18 joints in which each joint is projected in the 2D plane. For the collection of human features, we used 36 values (18 × 2), for example, nose_x, nose_y, neck_x, neck_y, Right_shoulder_x, Right_shoulder_y, Right_elbow_x, Right_elbow_y, etc.
