Wheat leaf area index prediction using data fusion based on high-resolution unmanned aerial vehicle imagery

Table 3 Validation statistics of different models for wheat LAI prediction

Feature	Metrics	Removing soil background		Retaining soil background
Feature	Metrics	RFR	SVR	RFR	SVR
Sp	R²	0.746	0.679	0.684	0.539
Sp	RMSE	1.185	1.233	1.441	1.472
Sp + Th	R²	0.689	0.701	0.573	0.536
Sp + Th	RMSE	1.391	1.176	1.604	1.474
Sp + St	R²	0.792	0.741	0.773	0.564
Sp + St	RMSE	1.135	1.127	1.135	1.391
Sp + Th + St	R²	0.815	0.748	0.781	0.576
Sp + Th + St	RMSE	1.023	1.121	1.128	1.304

ISSN: 1746-4811