Four-Scale Linear Model for Anisotropic Reflectance (FLAIR) for Plant Canopies—Part II: Validation and Inversion with CASI, POLDER, and PARABOLA Data at BOREAS

To address the need for a flexible model of the bidirectional reflectance distribution function (BRDF) that is also suitable for inversion, the FLAIR Model (Four-Scale Linear Model for AnIsotropic Reflectance) has been developed [1]. Based on the more detailed Four-Scale Model [2], FLAIR is a linear kernel-like model, developed with the aim of not being limited to specific canopy characteristics or view/illumination geometry, while maintaining …