Implicit skinning: real-time skin deformation with contact modeling

Rodolphe Vaillant, Loïc Barthe, Gaël Guennebaud, Marie-paule Cani, Damien Rohmer, Brian Wyvill, Olivier Gourmel, Mathias Paulin

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

Geometric skinning techniques, such as smooth blending or dual-quaternions, are very popular in the industry for their high performances, but fail to mimic realistic deformations. Other methods make use of physical simulation or control volume to better capture the skin behavior, yet they cannot deliver real-time feedback. In this paper, we present the first purely geometric method handling skin contact effects and muscular bulges in real-time. The insight is to exploit the advanced composition mechanism of volumetric, implicit representations for correcting the results of geometric skinning techniques. The mesh is first approximated by a set of implicit surfaces. At each animation step, these surfaces are combined in real-time and used to adjust the position of mesh vertices, starting from their smooth skinning position. This deformation step is done without any loss of detail and seamlessly handles contacts between skin parts. As it acts as a post-process, our method fits well into the standard animation pipeline. Moreover, it requires no intensive computation step such as collision detection, and therefore provides real-time performances.
Original languageEnglish
Article number125
JournalACM Transactions on Graphics
Volume32
Issue number4
DOIs
Publication statusPublished - 1 Jul 2013

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