Using the recursive subdivision and the advancing front technique for the discretization of multi-phase microstructures

The present paper deals with the discretization of microstructure initially represented by a digital image obtained from computer tomography or any other similar scanning device. The boundary voxels in the digital representation are identified and then replaced by a boundary triangulation of the similar resolution as the original digital image. This triangulation is then subjected to recursive subdivision to recover a smooth surface of the microstructure which is then retriangulated according to a user specified resolution. Finally, the interior of the microstructure is discretized. The performance of the proposed approach is shown on an example.