A physical model of the bidirectional reflectance of vegetation canopies: 2. Inversion and validation

Abstract

A physically based, analytical model of the bidirectional reflectance of porous media is validated against laboratory and ground-based measurements taken over two vegetation covers, both in the visible and near-infrared spectral regions. An inversion procedure, based on a nonlinear optimization technique, is used to infer the intrinsic optical properties of the leaves, as well as information on the morphology of the canopies, that is, on the geometrical arrangements of these scatterers in space. The model is then used to generate theoretical bidirectional reflectances. -from Authors