Animating Complex Hairstyles in Real-Time

Volino, P. and Magnenat-Thalmann, N.

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 complex behavior of the hair medium and maintaining sufficient versatility for simulating any kind of 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 virtually any hairstyle to be simulated in any rendering context with the appropriate tradeoff between accuracy and computation speed, fitting the need of Level-of-Detail optimization schemes.

  booktitle = {Proc. of the ACM symposium on Virtual reality software and technology (VRST'04)},
  author = {Volino, P. and Magnenat-Thalmann, N.},
  title = {Animating Complex Hairstyles in Real-Time},
  pages = {41-48},
  month = nov,
  year = {2004},
  topic = {Hair Simulation}