Fig. 1From: Estimation of area- and mass-based leaf nitrogen contents of wheat and rice crops from water-removed spectra using continuous wavelet analysisa Represents a measured reflectance spectrum and the modeled water-only spectrum for a fresh leaf and b represents the corresponding water-removed spectrum. The vertical dashed lines correspond to the absorption features of nitrogen centered at 1510 nm, 1690 nm, 2060 nm, 2180 nm, and 2300 nm. In addition, three scaled and shifted mother wavelets (labeled as S3, S4, and S5) at scales 3–5 with the shifting factor of 2180 nm are presented in (b)Back to article page