The Randomized Sample Tree: A Data Structure for Externally Stored Virtual Environments

Journal article
(Original article)

Publication Details

Author(s): Meyer auf der Heide F, Fischer M, Krokowski J, Klein J, Wanka R, Wand M
Journal: Presence-Teleoperators and Virtual Environments
Publisher: Massachusetts Institute of Technology Press (MIT Press): STM Titles
Publication year: 2004
Volume: Vol. 13, No. 6, The MIT Press
Journal issue: 6
Pages range: 617-637
ISSN: 1054-7460
Language: English


We present a new data structure for rendering highly complex virtual environments of arbitrary topology. The special feature of our approach is that it allows an interactive navigation in very large scenes (30 GB/400 million polygons in our benchmark scenes) that cannot be stored in main memory, but only on a local or remote hard disk. Furthermore, it allows interactive rendering of substantially more complex scenes by instantiating objects. The sampling process is done in the preprocessing. There, the polygons are randomly distributed in our hierarchical data structure, the randomized sample tree. This tree uses only space that is linear in the number of polygons. In order to produce an approximate image of the scene, the tree is traversed and polygons stored in the visited nodes are rendered. During the interactive walk-through, parts of the sample tree are loaded from a local or remote hard disk. We implement our algorithm in a prototypical walk-through system. Analysis and experiments show that the quality of our images is comparable to images computed by the conventional z-buffer algorithm regardless of the scene topology. © 2005 by the Massachusetts Institute of Technology.

FAU Authors / FAU Editors

Wanka, Rolf Prof. Dr.
Professur für Informatik (Effiziente Algorithmen und Kombinatorische Optimierung)

External institutions with authors

Eberhard Karls Universität Tübingen
Universität Paderborn

How to cite

Meyer auf der Heide, F., Fischer, M., Krokowski, J., Klein, J., Wanka, R., & Wand, M. (2004). The Randomized Sample Tree: A Data Structure for Externally Stored Virtual Environments. Presence-Teleoperators and Virtual Environments, Vol. 13, No. 6, The MIT Press(6), 617-637.

Meyer auf der Heide, Friedhelm, et al. "The Randomized Sample Tree: A Data Structure for Externally Stored Virtual Environments." Presence-Teleoperators and Virtual Environments Vol. 13, No. 6, The MIT Press.6 (2004): 617-637.


Last updated on 2018-20-07 at 22:23