Efficient modeling of entangled details for natural scenes

Abstract : Digital landscape realism often comes from the multitude of details that are hard to model such as fallen leaves, rock piles or entangled fallen branches. In this article, we present a method for augmenting natural scenes with a huge amount of details such as grass tufts, stones, leaves or twigs. Our approach takes advantage of the observation that those details can be approximated by replications of a few similar objects and therefore relies on mass-instancing. We propose an original structure, the Ghost Tile, that stores a huge number of overlapping candidate objects in a tile, along with a pre-computed collision graph. Details are created by traversing the scene with the Ghost Tile and generating instances according to user-defined density fields that allow to sculpt layers and piles of entangled objects while providing control over their density and distribution.
Keywords : Computer graphics
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Journal articles
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https://hal.archives-ouvertes.fr/hal-01370684
Contributor : Eric Guérin <>
Submitted on : Monday, September 26, 2016 - 3:38:10 PM
Last modification on : Thursday, August 29, 2019 - 3:50:04 PM
Long-term archiving on : Tuesday, December 27, 2016 - 12:11:06 PM

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Eric Guérin, Eric Galin, François Grosbellet, Adrien Peytavie, Jean-David Genevaux. Efficient modeling of entangled details for natural scenes. Computer Graphics Forum, Wiley, 2016, 35 (7), pp.257-267. ⟨10.1111/cgf.13023⟩. ⟨hal-01370684⟩

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