Fast tree ambient occlusion approximation

Teng Jun, Hu Bao-Gang, Jaeger Marc. 2007. Fast tree ambient occlusion approximation. 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. 319-322. 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 : We present a fast ambient occlusion approximation al- gorithm for real-time tree rendering. The main contribution of the proposed method concerns the preprocessing stage of ambient occlusion. The proposed method is a divide- and-conquer calculation framework with limited user inter- vention. The proposed approach splits the plant geometry into clusters. On each plant primitive, ambiant occlusion approximation is then defined from statistical inner cluster properties and a fast outer cluster occlusion. The imple- mentation achieves flexible ambient occlusion effects with linear complexity. Keywords: tree visualization, natural phenomena ren- dering, global illumination, ambient occlusion, accessibility value approximation. (Résumé d'auteur)

Mots-clés Agrovoc : Modèle végétal, Arbre, Imagerie, Modèle de simulation, Modèle mathématique, Éclairage, Ombrage, Espacement, Port de la plante

Mots-clés complémentaires : Architecture des arbres

Classification Agris : U10 - Computer science, mathematics and statistics

Auteurs et affiliations

  • Teng Jun, Institut d'automatique (CHN)
  • Hu Bao-Gang, Institut d'automatique (CHN)
  • Jaeger Marc, CIRAD-AMIS-UMR AMAP (FRA)

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