Procedural Cloudscapes

Antoine Webanck 1, 2 Yann Cortial 1, 2 Eric Guérin 1, 2 Eric Galin 1, 2
1 GeoMod - Modélisation Géométrique, Géométrie Algorithmique, Fractales
LIRIS - Laboratoire d'InfoRmatique en Image et Systèmes d'information
Abstract : We present a phenomenological approach for modeling and animating cloudscapes. We propose a compact procedural model for representing the different types of cloud over a range of altitudes. We define primitive-based field functions that allow the user to control and author the cloud cover over large distances easily. Our approach allows us to animate cloudscapes by morphing: instead of simulating the evolution of clouds using a physically-based simulation, we compute the movement of clouds using key-frame interpolation and tackle the morphing problem as an Optimal Transport problem. The trajectories of the cloud cover primitives are generated by solving an Anisotropic Shortest Path problem with a cost function that takes into account the elevation of the terrain and the parameters of the wind field.
Type de document :
Article dans une revue
Computer Graphics Forum, Wiley, 2018, 37 (2)
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https://hal.archives-ouvertes.fr/hal-01730789
Contributeur : Eric Guérin <>
Soumis le : mercredi 14 mars 2018 - 11:08:18
Dernière modification le : jeudi 4 octobre 2018 - 09:35:20

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  • HAL Id : hal-01730789, version 1

Citation

Antoine Webanck, Yann Cortial, Eric Guérin, Eric Galin. Procedural Cloudscapes. Computer Graphics Forum, Wiley, 2018, 37 (2). 〈hal-01730789〉

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