Spectral invariants and scattering across multiple scales from within-leaf to canopy

By Philip Lewis, M. Disney. 2007

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Canopy spectral invariants, Part 2: Application to classification of forest types from hyperspectral data (2011, background): “Let o=(TL+RL)/(1 t0) be the transformed leaf albedo, which is the probability of being scattered from the leaf given that photon interacts with internal leaf constituents [35].”
Canopy spectral invariants. Part 1: A new concept in remote sensing of vegetation (2011, background): “By plotting i(l) versus i(l)o(l), a linear relationship is obtained.”
Retrieval of subpixel Tamarix canopy cover from Landsat data along the Forgotten River using linear and nonlinear spectral mixture models (2010, methodology): “The model development builds upon results from the spectral invariant theory, according to which leaf/shoot reflectance is related to canopy reflectance through photon recollision probability parameters (Huang et al., 2007; Lewis & Disney, 2007; Smolander & Stenberg, 2005).”
Earth system science related imaging spectroscopy — an assessment (2009, background): “…a predominant topic in remote sensing (Chen et al., 1999; Marceau & Hay, 1999; Wessman, 1992), and their application to imaging spectroscopy has remained underexplored for a long time, but it now receives increasingly focused attention (Lewis & Disney, 2007; Roberts et al., 2004; Schaepman, 2007).”