Real-time animation of complex hairstyles

IEEE Transactions on Visualization and Computer Graphics
Pascal Volino, Nadia Magnenat-Thalmann

Abstract

True real-time animation of complex hairstyles on animated characters is the goal of this work, and the challenge is to build a mechanical model of the hairstyle which is sufficiently fast for real-time performance while preserving the particular behavior of the hair medium and maintaining sufficient versatility for simulating any kind of complex hairstyles. Rather than building a complex mechanical model directly related to the structure of the hair strands, we take advantage of a volume free-form deformation scheme. We detail the construction of an efficient lattice mechanical deformation model which represents the volume behavior of the hair strands. The lattice is deformed as a particle system using state-of-the-art numerical methods, and animates the hairs using quadratic B-Spline interpolation. The hairstyle reacts to the body skin through collisions with a metaball-based approximation. The model is highly scalable and allows hairstyles of any complexity to be simulated in any rendering context with the appropriate trade off between accuracy and computation speed, fitting the need of Level-of-Detail optimization schemes.

Citations

Aug 12, 2009·Annals of Biomedical Engineering·Leopold GrinbergGeorge Em Karniadakis
Mar 1, 2012·Medical & Biological Engineering & Computing·Ehsan ArbabiNadia Magnenat-Thalmann
Apr 5, 2012·The International Journal of Medical Robotics + Computer Assisted Surgery : MRCAS·Woojin Ahn, Doo Yong Lee
Feb 12, 2011·IEEE Transactions on Visualization and Computer Graphics·Woojin Ahn, Doo Yong Lee
Jan 15, 2008·IEEE Transactions on Visualization and Computer Graphics·Hervé Delingette
Mar 23, 2010·Medical Image Analysis·Benjamin Gilles, Nadia Magnenat-Thalmann

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