TIL

BRDF stands for Bidirectional Reflectance Distribution Function

> [It] is a function of four real variables that defines how light is reflected at an opaque surface. [...] The function takes an incoming light direction, ωi, and outgoing direction, ωr (taken in a coordinate system where the surface normal n lies along the z-axis), and returns the ratio of reflected radiance exiting along ωr to the irradiance incident on the surface from direction ωi.

Source: https://en.wikipedia.org/wiki/Bidirectional_reflectance_dist...

Could you explain your workflow using BRDF, and what application you're using? I just want to know the real world use case for this kind of data. I'm open to expanding the database to include BRDF data as well.