A sphere floating by 3 diffuse planar surfaces.
The sphere is illuminated by a set of 9 spherical light sources,
located just behind the viewer.
Assumptions
Subsurface scattering (which is
a free parameter in the model I am using) is set to zero. A
homogeneous surface (required by the model) is also assumed.
Test images are shown for the index of refraction of the binder
(n ~ 1.5) and for the index of refraction of the pigment particles
(n ~2.6).
Image 1: n =1.5, sigma= 0.01 micron, tau=0.01 micron.
This image shows that the model can produce a high gloss
(mirror-like) surface.
Images 2 and 3: n= 1.5, low roughness case (sigma=0.055 micron, tau=.039 micron),
and high roughness case (sigma=0.15 micron, tau=.123 micron).
Images 4 and 5: n= 2.6, low roughness case (sigma=0.055 micron, tau=.039 micron),
and high roughness case (sigma=0.15 micron, tau=.123 micron).
