It deals with 3D scene (toric or not) described by polygons and discs having Lambertian or not optical properties.
Algorithmic optimizations are : stratified sampling for ray launching from light sources, importance sampling and implicit capture for scattered rays, russian roulett e for unbiased ray termination, and BSP speed-up for the ray casting.
Reference
Développement d'un modèle de radiosité mixte pour simuler la distribution du rayonnement dans les couverts végétaux
Chelle, M., Développement d'un modèle de radiosité mixte pour simuler la distribution du rayonnement dans les couverts végétaux (1997), Ph.D. thesis, Université de Rennes I.
Could plant leaves be treated as Lambertian surfaces in dense crop canopies to estimate light absorption?
Chelle, M., Could plant leaves be treated as Lambertian surfaces in dense crop canopies to estimate light absorption? (2006), Ecological Modelling, 198, 1–2, 219-228, DOI: 10.1016/j.ecolmodel.2006.04.010.
