Interactive Shape Modeling using a Skeleton-Mesh Co-Representation

Jacob Andreas Bærentzen, Rinat Abdrashitov, Karan Singh

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We introduce the Polar-Annular Mesh representation (PAM). A PAM is a mesh-skeleton co-representation designed for the modeling of 3D organic, articulated shapes. A PAM represents a manifold mesh as a partition of polar (triangle fans) and annular (rings of quads) regions. The skeletal topology of a shape is uniquely embedded in the mesh connectivity of a PAM, enabling both surface and skeletal modeling operations, interchangeably and directly on the mesh itself. We develop an algorithm to convert arbitrary triangle meshes into PAMs as well as techniques to simplify PAMs and a method to convert a PAM to a quad-only mesh. We further present a PAM-based multi-touch sculpting application in order to demonstrate its utility as a shape representation for the interactive modeling of organic, articulated figures as well as for editing and posing of pre-existing models.
Original languageEnglish
Article number132
JournalA C M Transactions on Graphics
Issue number4
Number of pages10
Publication statusPublished - 2014
Event41st International Conference and Exhibition on Computer Graphics and Interactive Techniques - Vancouver Convention Centre, Vancouver, Canada
Duration: 10 Aug 201414 Aug 2014
Conference number: 41


Conference41st International Conference and Exhibition on Computer Graphics and Interactive Techniques
LocationVancouver Convention Centre
Internet address


  • Shape Modeling
  • polygonal mesh
  • Skeleton

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