A four-level bidirectional reflectance model based on canopy architecture and its inversion

Open boreal forests present a challenge in understanding remote sensing signals acquired under various solar and view geometry. Much research is needed to improve the ability to model the bidirectional reflectance distribution for retrieving the surface information using measurements at a few angles. The geometric-optical bidirectional reflectance model outlined in this paper differs from Li-Strahler's model in the following respects: (i) the …