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Amplification de Terrains avec des caractéristiques implicites 3D

Axel Paris 1, 2, 3 Eric Galin 1, 3 Adrien Peytavie 1, 3 Eric Guérin 1, 3 J Gain 4
2 Origami - Origami
LIRIS - Laboratoire d'InfoRmatique en Image et Systèmes d'information
3 GeoMod - Modélisation Géométrique, Géométrie Algorithmique, Fractales
LIRIS - Laboratoire d'InfoRmatique en Image et Systèmes d'information
Abstract : While three-dimensional landforms, such as arches and overhangs, occupy a relatively small proportion of most computer-generated landscapes, they are distinctive and dramatic and have an outsize visual impact. Unfortunately, the dominant heightfield representation of terrain precludes such features, and existing in-memory volumetric structures are too memory intensive to handle larger scenes. In this paper, we present a novel memory-optimized paradigm for representing and generating volumetric terrain based on implicit surfaces. We encode feature shape and terrain geology using construction trees that arrange and combine implicit primitives. The landform primitives themselves are positioned using Poisson sampling, built using open shape grammars guided by stratified erosion and invasion percolation processes, and, finally, queried during polygonization.
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https://hal.archives-ouvertes.fr/hal-03184694
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Submitted on : Monday, March 29, 2021 - 5:13:24 PM
Last modification on : Monday, September 6, 2021 - 10:25:48 AM
Long-term archiving on: : Wednesday, June 30, 2021 - 6:54:28 PM

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  • HAL Id : hal-03184694, version 1

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Axel Paris, Eric Galin, Adrien Peytavie, Eric Guérin, J Gain. Amplification de Terrains avec des caractéristiques implicites 3D. Journées de l’Association Française d’Informatique Graphique, Nov 2018, Poitier, France. ⟨hal-03184694⟩

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