Research Article

Efficient Interaction Recognition through Positive Action Representation

Figure 2

Bad tracking and lost tracking for a hugging activity. (a) and (b) show the key process in hugging for two different pairs; the last two images in (a) represent bad tracking of human bodies, and (b) represents lost tracking of bodies.
795360.fig.002a
(a) Bad tracking
795360.fig.002b
(b) Lost tracking