Video n. 106

BDAM - Batched Dynamic Adaptive Meshes for High Performance Terrain Visualization

Paolo Cignoni, Fabio Ganovelli, Enrico Gobbetti, Fabio Marton, Federico Ponchio, and Roberto Scopigno
Presented at the Eurographics 2003 Conference.

Date: 01/2003 Production: CRS4 - D Master: CD106 Encoding: DivX

[ HIGH QUALITY DOWNLOAD] 20518 KB

Abstract

This video illustrates an efficient technique for out-of-core rendering and management of large textured terrain surfaces. The technique, called Batched Dynamic Adaptive Meshes (BDAM), is based on a paired tree structure: a tiled quadtree for texture data and a pair of bintrees of small triangular patches for the geometry. These small patches are TINs that are constructed and optimized off-line with high quality simplification and tristripping algorithms. Hierarchical view frustum culling and view-dependendent texture and geometry refinement is performed at each frame with a stateless traversal algorithm that renders a continuous adaptive terrain surface by assembling out of core data. Thanks to the batched CPU/GPU communication model, the proposed technique is not processor intensive and fully harnesses the power of current graphics hardware. Both preprocessing and rendering exploit out of core techniques to be fully scalable and be able to manage large terrain datasets.

Related Publications

	[1] Paolo Cignoni, Fabio Ganovelli, Enrico Gobbetti, Fabio Marton, Federico Ponchio, and Roberto Scopigno. Interactive Out-of-core Visualization of Very Large Landscapes on Commodity Graphics Platforms. In Olivier Balet, Gérard Subsol, and Patrice Torguet, editors, International Conference on Virtual Storytelling. Volume 2897 of Lecture Notes in Computer Science. Pages 21-29, Springer Verlag, New York, NY, USA, November 2003. Proc. Second International Conference, ICVS 2003, Toulouse, France, November 20-21, 2003, Proceedings.
	[2] Paolo Cignoni, Fabio Ganovelli, Enrico Gobbetti, Fabio Marton, Federico Ponchio, and Roberto Scopigno. Batching Meshes for High Performance Terrain Visualization. In Proceedings Eurographics Italy, September 2003. CDROM Proceedings.
	[3] Paolo Cignoni, Fabio Ganovelli, Enrico Gobbetti, Fabio Marton, Federico Ponchio, and Roberto Scopigno. Planet-Sized Batched Dynamic Adaptive Meshes (P-BDAM). In Proceedings IEEE Visualization. Pages 147-155. IEEE Computer Society Press, October 2003.
	[4] Paolo Cignoni, Fabio Ganovelli, Enrico Gobbetti, Fabio Marton, Federico Ponchio, and Roberto Scopigno. BDAM - Batched Dynamic Adaptive Meshes for High Performance Terrain Visualization. Computer Graphics Forum, 22(3): 505-514, September 2003. Proc. Eurographics 2003 - Second Best Paper Award.

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