On-the-Go Grapevine Yield Estimation Using Image Analysis and Boolean Model

Table 4

Results obtained for the yield estimation per vine based on manually captured grapevine images using the naïve estimator and the Boolean model.

Grapevine variety	Manual harvest		Naïve estimator			Boolean model
	Mean yield (g)	Number of vines	Mean yield (g)	R^2	RMSE (g)	Mean yield (g)	R^2	RMSE (g)
Cabernet Sauvignon	1311	12	736	0.82	661.0	1386	0.85	214.2
Grenache	1750	12	938	0.87	993.9	1816	0.89	320.6
Syrah	1231	11	509	0.93	673.8	966	0.88	263.7
Touriga Nacional	1249	10	622	0.55	713.7	1202	0.45	421.9
Total	1431	45	728	0.82	777.2	1389	0.81	310.2

Manual harvest refers to the weight of all the clusters corresponding to each vine. Asterisks represent statistical significance: ; ; .