fig3

Figure 3. Comparisons of positional heat maps among tracklets engaging in walking movements (A-C) and tracklets engaging in hand-tool interactions (D-F). Tracklets engaging in walking movements (A-C) are more positionally dispersed, represented by the wide spread of their positional heat signature, while tracklets engaging in hand-tool interactions (D-F) are more visibly concentrated in a position close to the operating table.