| abstract |
A method of measuring illumination of an environment (A) comprises:- capturing (e.g. via an RGB-D camera arrangement 12) images of an illuminated (L) environment (A), - extracting (10) from the image captured light emittance values M(x,t) (or R(x,t)) as well as albedo values Ρ(x) of surface areas ("patches") across the environment (A),- computing (10) illumination values E(x,t) of surface areas across the environment (A) as a function of the emittance values M(x,t) and the albedo values Ρ(x). |