Quantification of the effects of fur, fur color, and velocity on Time-Of-Flight technology in dairy production

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Table 4 Range per number of values calculated for X-coordinates at different velocities RpV \(\boldsymbol {{~}_{\text {velocity}} = \frac {max(coord{.})-min(coord{.})}{N_{\text {velocity}}}}\) , where N _velocity is the number of images with determined X-coordinates at the corresponding velocity (standstill, 10 cm/s, 20 cm/s, 30 cm/s)

Material	Body part	RpV ₀	RpV ₁₀	RpV ₂₀	RpV ₃₀	quadr.coeff.	RMSD	R ²
	Isc.Tub., L	0.008	0.038	0.044	0.061	0	0.008	0.96
	Dish, L	0.014	0.062	0.072	0.1	-0.01	0.013	0.96
plaster	Tail	0.014	0.062	0.069	0.087	-0.01	0.012	0.95
cast	Dish, R	0.013	0.067	0.069	0.1	-0.01	0.018	0.92
	Isc.Tub.,R	0.018	0.039	0.046	0.065	0	0.006	0.97
	BB30	0.0011	0.0108	0.0156	0.026	0	0.001	0.98
	Isc.Tub.,L	0.002	0.071	0.3	2.5	0.53	0.405	0.96
fur-	Dish,L	0.001	0.106	0.286	5.0	1.15	0.998	0.94
covered	Tail	0.002	0.078	0.191	0.75	0.12	0.092	0.98
model	Dish,R	0	0.036	0.048	1.5	0.35	0.33	0.93
	Isc.Tub., R	0.001	0.029	0.095	2	0.47	0.40	0.94
	BB30	0.0005	0.0142	0.0476	0.25	0.05	0.002	0.57

The seventh column contains the quadratic coefficients of the polynomial approximation of the vectors (RpV ₀, RpV₁₀, RpV₂₀, RpV₃₀) for all considered body parts (abbreviated in column 2). The medians of the quadratic coefficients differ significantly between plaster cast and fur-covered model (p=0.05, median_plaster=-0.005, median_fur=0.41). The last two columns contain the goodness-of-fit statistics root mean square deviation (RMSD) and coefficient of determination (R ²). All fits had a single degree of freedom.