Volume decomposition for two-piece rigid casting

Alderighi T, Malomo L, Bickel B, Cignoni P, Pietroni N

Double height field  Volumetric decomposition  Casting 

We introduce a novel technique to automatically decompose an input object's volume into a set of parts that can be represented by two opposite height fields. Such decomposition enables the manufacturing of individual parts using two-piece reusable rigid molds. Our decomposition strategy relies on a new energy formulation that utilizes a pre-computed signal on the mesh volume representing the accessibility for a predefined set of extraction directions. Thanks to this novel formulation, our method allows for efficient optimization of a fabrication-aware partitioning of volumes in a completely automatic way. We demonstrate the efficacy of our approach by generating valid volume partitionings for a wide range of complex objects and physically reproducing several of them.

Source: ACM TRANSACTIONS ON GRAPHICS, vol. 40 (issue 6)

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