Table 2.

Summary of CV methods and corresponding references used in the literature for BW estimation in four livestock species

CV method	Cattle	Goat	Pig	Sheep
Single camera 3D imagery: TFNIR	Miller et al., 2019; Cominotte et al., 2020	Negretti et al., 2011	Fernandes et al., 2020a,b; Pezzuolo et al., 2018; White et al., 2004
3D Structure-from-Motion (SfM)			Wirthgen et al. 2011
Multi-camera 2D imagery	Gjergji et al., 2020; de Moraes Weber et al., 2020; Tasdemir et al., 2011a,b	Lerch et al., 2020		Dickinson et al. 2013; Menesatti et al., 2014
Multi-camera 3D imagery	Rudenko et al., 2020; Tasdemir et al., 2019