Smoothens out interface roughness by simulated curvature flow. This is achieved by the diffusion of each initially sharply bounded grain volume within the periodic domain up to a given distance 'd' voxels. The final geometry is assembled by selecting at each voxel that grain index for which the concentration remains largest.
> geom_grainGrowth [options] [geomfile(s)]
--distance [ 1 ]
- diffusion distance in voxels
--smooth [ 1 ]
- N for curvature flow
- renumber microstructure indices from 1...N
- list of immutable microstructures