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Table 3 Correlation analysis between mean GNDVI values extracted from raw Canon S100 digital number values, Calibrated Canon S100 digital number values and corresponding band equivalent reflectance (BER) GNDVI values from the spectroradiometer using different plot boundary extraction method

From: Application of unmanned aerial systems for high throughput phenotyping of large wheat breeding nurseries

  Raw digital numbers Calibrated digital numbers
Field-map based Field-map based Classification Simple-grid
Spectroradiometer BER 0.68 0.76 0.58 0.68