Spectrum-preserving texture advection for animated fluids

نویسندگان

  • Qizhi Yu
  • Fabrice Neyret
  • Nicolas Holzschuch
چکیده

Texturing an animated fluid is a useful way to augment the visual complexity of pictures without increasing the simulation time. But texturing flowing fluids is a complex issue, as it creates conflicting requirements: we want to keep the texture properties (features, spectrum) while conforming to the underlying flow — which distorts the attached texture. In this paper, we present a new method for texturing animated fluids. Our method ensures that the moving texture always follows the velocity field of the fluid, while maintaining key properties of the original texture. Our algorithm runs in real-time; our experiments show that it is well suited for a wide range of input texture, including, but not limited to, noise textures. Key-words: Texturing animation, Animated fluids, Spryticles, Particles, Lagrangian methods ∗ Laboratoire Jean Kuntzmann et INRIA Grenoble † CNRS Advection de texture pour fluides animés, préservant le spectre Résumé : Texturer un fluide animé est une faon pratique d’augmenter la complexité visuelle des images sans augmenter le temps de simulation. Mais texturer des fluides animés est un problme complexe à cause de buts condradictoires: on souhaite conserver les propriétés de la texture (éléments caractéristiques, spectre) tout en respectant le mouvement du fluide – qui déforme la texture. Dans cet article nous présentons une nouvelle méthode pour texturer des fluides animés. Notre méthode fournit une texture animée qui suit à chaque instant le champ de vitesse du fluide, tout en prservant les propriétés principales de la texture originelle. Notre algorithme fonctionne en tempsréel; nos expriences montrent qu’il est bien adapt pour de nombreux types de textures d’entrée, y compris les textures de bruit. Mots-clés : Animation de texture, Fluides animés, Spryticles, Particules, Méthodes Langrangiennes Spectrum-preserving texture advection for animated fluids 3

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تاریخ انتشار 2009