Efficient modeling of entangled details for natural scenes

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. Ou...

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Vydáno v:	Computer graphics forum Ročník 35; číslo 7; s. 257 - 267
Hlavní autoři:	Guérin, Eric, Galin, Eric, Grosbellet, François, Peytavie, Adrien, Génevaux, Jean-David
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	Oxford Blackwell Publishing Ltd 01.10.2016 Wiley
Témata:	Analysis Approximation Categories and Subject Descriptors (according to ACM CCS) Computer graphics Computer Science Density Digital Digital imaging Ghosts Graphics I.3.3 [Computer Graphics]: Picture/Image Generation I.3.5 [Computer Graphics]: Computational Geometry and Object Modeling-Curve I.3.5 [Computer Graphics]: Computational Geometry and Object Modeling—Curve, surface, solid and object representations I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism Landscapes Nature Piles Replication solid and object representations Stores Studies surface Computer graphics
ISSN:	0167-7055, 1467-8659
On-line přístup:	Získat plný text
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Popis
Shrnutí:	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.
Bibliografie:	istex:998C43070BAFFDD19B3A5483C209098B1E36B67F ark:/67375/WNG-CNSGHLRV-5 Supporting Information ArticleID:CGF13023 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 14 ObjectType-Article-1 ObjectType-Feature-2 content type line 23
ISSN:	0167-7055 1467-8659
DOI:	10.1111/cgf.13023