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| HAL : inria-00450722, version 2 |
| Voir la fiche détaillée |  BibTeX,EndNote,... |
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| Computer Graphics Forum 29, 2 (2010) |
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| Versions disponibles | v1 (26-01-2010) | v2 (27-01-2010) |
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| Implicit Blending Revisited |
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| Adrien Bernhardt 1, 2Loïc Barthe 3 |
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| (05/2010) |
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| Blending is both the strength and the weakness of functionally based implicit surfaces (such as F-reps or softobjects). While it gives them the unique ability to smoothly merge into a single, arbitrary shape, it makes implicit modelling hard to control since implicit surfaces blend at a distance, in a way that heavily depends on the slope of the field functions that define them. This paper presents a novel, generic solution to blending of functionally-based implicit surfaces: the insight is that to be intuitive and easy to control, blends should be located where two objects overlap, while enabling other parts of the objects to come as close to each other as desired without being deformed. Our solution relies on automatically defined blending regions around the intersection curves between two objects. Outside of these volumes, a clean union of the objects is computed thanks to a new operator that guarantees the smoothness of the resulting field function; meanwhile, a smooth blend is generated inside the blending regions. Parameters can automatically be tuned in order to prevent small objects from blurring out when blended into larger ones, and to generate a progressive blend when two animated objects come in contact. |
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| 1 : | EVASION (INRIA Grenoble Rhône-Alpes / LJK Laboratoire Jean Kuntzmann) |
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CNRS : UMR5224 – INRIA – Laboratoire Jean Kuntzmann – Institut National Polytechnique de Grenoble (INPG) – Université Joseph Fourier - Grenoble I – Université Pierre Mendès-France - Grenoble II |
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| 2 : | Laboratoire Jean Kuntzmann (LJK) |
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CNRS : UMR5224 – Université Joseph Fourier - Grenoble I – Université Pierre Mendès-France - Grenoble II – Institut Polytechnique de Grenoble - Grenoble Institute of Technology |
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| 3 : | Institut de recherche en informatique de Toulouse (IRIT) |
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CNRS : UMR5505 – Université des Sciences Sociales - Toulouse I – Université Toulouse le Mirail - Toulouse II – Université Paul Sabatier - Toulouse III |
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| 4 : | Department of Computer Science (UVic) |
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University of Victoria |
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| Domaine | : | Informatique/Synthèse d'image et réalité virtuelle |
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| Liste des fichiers attachés à ce document : | ||||||||||||||||||
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| inria-00450722, version 2 | |
| http://hal.inria.fr/inria-00450722 | |
| oai:hal.inria.fr:inria-00450722 | |
| Contributeur : Adrien Bernhardt | |
| Soumis le : Mercredi 27 Janvier 2010, 11:18:01 | |
| Dernière modification le : Jeudi 25 Février 2010, 12:04:55 | |
