Efficient multiresolution of foliage for real-time rendering

Deng Qingpiong, Zhang Xiao-Peng, Jaeger Marc. 2007. Efficient multiresolution of foliage for real-time rendering. In : Plant growth modeling and applications. Proceedings PMA06 : The Second International Symposium on plant growth modeling, simulation, visualization and applications, Beijing, China, November 13-17, 2006. Fourcaud Thierry (ed.), Zhang Xiao-Peng (ed.). Institut d'automatique-LIAMA, IEEE. Los Alamitos : IEEE Computer Society, pp. 307-314. ISBN 0-7695-2851-1 International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications (PMA06). 2, Beijing, Chine, 13 November 2006/17 November 2006.

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Abstract : This paper presents a generalized geometric foliage simplification method to efficiently construct multi- resolution models for leaves with complex shapes. It includes two phases: preprocessing and rendering. In the preprocessing, we perform the simplification hierarchically in three levels: single leaf, phyllotaxy group and whole crown. We first simplify each single complex leaf to a quadrilateral. Then, we implement the progressive leaf collapse in the phyllotaxy group and the crown one after the other. To accelerate the preprocessing, we search for the best leaf pair in a limited scope, where the pairs of leaves impossible to be collapsed are eliminated in advance. During the rendering, we determine detail levels for leaves locating in different positions of the crown according to the distance from the viewer to the rendered tree, and a statistical visibility. Finally, the less visible leaves are rendered coarsely. As a result, visual quality is maintained while the overall compression ratio is higher. (Résumé d'auteur)

Mots-clés Agrovoc : Modèle végétal, Feuillage, Feuille, Arbre, Modèle mathématique, Modèle de simulation, Port de la plante, Anatomie végétale, Imagerie

Mots-clés complémentaires : Architecture des arbres

Classification Agris : U10 - Computer science, mathematics and statistics
F50 - Plant structure

Auteurs et affiliations

  • Deng Qingpiong, CIRAD-AMIS-UMR AMAP (FRA)
  • Zhang Xiao-Peng, Institut d'automatique (CHN)
  • Jaeger Marc, CIRAD-AMIS-UMR AMAP (FRA)

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