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Fig. 3 | Plant Methods

Fig. 3

From: A robust spectral angle index for remotely assessing soybean canopy chlorophyll content in different growing stages

Fig. 3

Depictions of the angles α and β which were used to calculate the Visible and NIR Angle Index (VNAI) and their calculation methods. The spectral data in this figure were simulated by using the PROSAIL (a combination of the Properties Optique Spectrales des Feuilles [PROSPECT] model and the Scattering by Arbitrarily Inclined Leaves [SAIL] model) radiative transfer model (RTM) (Leaf Area Index [LAI]: 2 m2/m2; Chl-Cab (parameter Cab in PROSAIL): 10, 20, 30, 40, 50 μg/cm2; see Table for other fixed parameters). The central wavelengths of bands B, G, R, and NIR are 492.4, 559.8, 664.6, and 832.8 nm, respectively

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Plant Methods

ISSN: 1746-4811