Table 6 The BPNN models for estimation of chlorophyll content based on vegetation indices.

From: Estimating apple tree canopy chlorophyll content based on Sentinel-2A remote sensing imaging

Characteristic bands

RBPc2

RMSEBPc

RBPv2

RMSEBPv

RVIblue + RVIred + RVIre

0.589

0.178

0.523

0.192

CIblue + CIred + CIre

0.623

0.191

0.563

0.205

NDVIgreen + NDVIred + NDVIre

0.674

0.169

0.601

0.185

  1. Note: RBPc2 was the determination coefficient of the BPNN model; RBPv2 was the verification determination coefficient of the BPNN model; RMSEBPc was the root mean square error of the BPNN model; and RMSEBPv was the verification root mean square error of the BPNN model.
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