Fast tree ambient occlusion approximation

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.

Bibliographic Details

Main Authors:	Teng, Jun, Hu, Bao-Gang, Jaeger, Marc
Format:	conference_item biblioteca
Language:	eng
Published:	IEEE Computer Society
Subjects:	U10 - Informatique, mathématiques et statistiques, modèle végétal, arbre, imagerie, modèle de simulation, modèle mathématique, éclairage, ombrage, espacement, port de la plante, http://aims.fao.org/aos/agrovoc/c_36583, http://aims.fao.org/aos/agrovoc/c_7887, http://aims.fao.org/aos/agrovoc/c_36760, http://aims.fao.org/aos/agrovoc/c_24242, http://aims.fao.org/aos/agrovoc/c_24199, http://aims.fao.org/aos/agrovoc/c_4326, http://aims.fao.org/aos/agrovoc/c_7020, http://aims.fao.org/aos/agrovoc/c_7272, http://aims.fao.org/aos/agrovoc/c_5969,
Online Access:	http://agritrop.cirad.fr/544953/
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