3D Plot from Scientific Research

The object in the first panel has a dark brown, lumpy surface with medium-clarity specular reflections and could be labelled 'melted chocolate' or 'mud'. This surface has a different visual quality from the object in the middle panel, which has low-clarity, dim reflections that make it look like 'latex' or 'rubber'. The object in the third panel has very rough, anisotropic specular reflections that rapidly change in brightness at the boundaries between highlights and lowlights, giving it the visual characteristics of 'velvet', 'silk' or 'fabric'.

DOI