Replaceable Substructures for Efficient Part-Based Modeling

Han Liu, Ulysse Vimont, Michael Wand, Marie Paule Cani, Stefanie Hahmann, Damien Rohmer, Niloy J. Mitra

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

A popular mode of shape synthesis involves mixing and matching parts from different objects to form a coherent whole. The key challenge is to efficiently synthesize shape variations that are plausible, both locally and globally. A major obstacle is to assemble the objects with local consistency, i.e., all the connections between parts are valid with no dangling open connections. The combinatorial complexity of this problem limits existing methods in geometric and/or topological variations of the synthesized models. In this work, we introduce replaceable substructures as arrangements of parts that can be interchanged while ensuring boundary consistency. The consistency information is extracted from part labels and connections in the original source models. We present a polynomial time algorithm that discovers such substructures by working on a dual of the original shape graph that encodes inter-part connectivity. We demonstrate the algorithm on a range of test examples producing plausible shape variations, both from a geometric and from a topological viewpoint. © 2015 The Author(s) Computer Graphics Forum © 2015 The Eurographics Association and John Wiley & Sons Ltd. Published by John Wiley & Sons Ltd.
Original languageEnglish (US)
Pages (from-to)503-513
Number of pages11
JournalComputer Graphics Forum
Volume34
Issue number2
DOIs
StatePublished - Jun 22 2015

ASJC Scopus subject areas

  • Computer Networks and Communications

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