Fig. 1. Cyclic displacement of two dimensional images. (a) +30; (b) +15; (c) 0; (d) -15; (e) -30

Fig. 2. Occlusion judgment. (a) Be blocked when go to the right; (b) be blocked when go to the left; (c) response curve

Fig. 3. Occlusion judgment flow

Fig. 4. KCF algorithm flow

Fig. 5. Occlusion experiment of KCF. (a) Before occlusion; (b) when occlusion occurs; (c) after occlusion

Fig. 6. Anti-occlusion test. (a) Occlusion; (c) after the target appearing

Fig. 7. Forward and backward difference detection

Fig. 8. Feature detection

Fig. 9. Comparative experiment. (a) Walking; (b) motinas_Room105; (c) Suv; (d) David3; (e) Subway

Fig. 10. Threshold setting. (a) Delay; (c) loss

Fig. 11. Tracking result of Walking

Fig. 12. Tracking result of motinas_Room105