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 40 (2021). doi:10.1145/3478513.3480555

Publisher: Association for Computing Machinery,, New York, N.Y. , Stati Uniti d'America

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