Simulation of paint's reflectivity by applying the Monte- Carlo technique has been performed. The necessary for simulation probability characteristics have been estimated from known paint's optical parameters, such extinction, single scattering albedo, scattering indicatrix of the elementar volume, reflection indicatrix of a substrate and optical thickness of the layer. The contrast coefficient and hiding power of a paint have been found from calculation of a diffuse reflectivity of the layers at black - RB and white - RW substrates. The computation has been performed for a paint with the following optical constants: pigment - np equals 2.53, (chi) p equals 2 (DOT) 10-2, and binder - nb equals 1.56, (chi) b equals 4 (DOT) 10-5. The developed technique may be applied to prediction of hiding power in various paints.
Oleg N. Kozakov,
"Determination of hiding power of paints by the Monte-Carlo method", Proc. SPIE 3573, OPTIKA '98: 5th Congress on Modern Optics, (19 August 1998); doi: 10.1117/12.324599; https://doi.org/10.1117/12.324599