Table 1.

Average overlap rate for the six algorithms conducted for different scenarios

Average overlap rate	HSVM	TLD	Frag	Particle Filter	MeanShift	PLS
Change of direction	0.79	0.23	0.36	0.36	0.40	0.55
Two hens mutual occlusion	0.78	0.03	0.39	0.37	0.37	0.61
Preening	0.75	0.05	0.33	0.21	0.36	0.62
Multi hens mutual occlusion	0.68	0.09	0.17	0.27	0.18	0.23
All frames	0.75	0.11	0.28	0.30	0.28	0.40