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The DoubleEagle Tanker: This 4 gigabyte environment consists of more than 82 million triangles and 127 thousand objects. Our algorithm can render it 11-50 frames per second on an SGI system with two IR2 graphics pipelines and three 300MHz R12000 CPUs.
GigaWalk is a system for interactive walkthrough of complex, gigabyte-sized environments. It combines occlusion culling and levels-of-detail and uses two graphics pipelines with one or more processors. We use a unified scene graph representation for multiple acceleration techniques, and we present novel algorithms for clustering geometry spatially, computing a scene graph hierarchy, performing conservative occlusion culling, and performing load-balancing between graphics pipelines and processors. GigaWalk has been used to render CAD environments composed of tens of millions of polygons at interactive rates on an SGI Onyx system with two Infinite Reality rendering pipelines. Overall, our system's combination of levels-of-detail and occlusion culling techniques results in significant improvements in frame-rate over view-frustum culling or either single technique alone.
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Coal-Fired Power plant: This 1.7 gigabyte environment consists of over 13 million triangles and 1200 objects. GigaWalk can display it 12-37 frames per second on an SGI Onyx workstation using two IR2 graphics pipelines and three 300MHz R12000 CPUs.
Videos/ Contains Videos demonstrating the GigaWalk's interactive display.
Images/DE/ Images of the Double Eagle Model, showing different parts of the model and its complexity.
Images/DE/Tutorial/ Images of the Double EagleModel tutorial frlom the video
Images/DE/Clusters/ Results of our clustering algorithm on the DE.
Images/PP/ Images of the Powerplant Model, showing different parts of the model and its complexity.
Images/PP/Clusters/ Results of our clustering algorithm on the PP.
The HTML has links to resized JPEG files. Full size PNG files are available as the same filename in the appropriate directory. See README file in the directory for details about the PNG files.
CB #3175, Department of Computer Science
University of North Carolina
Chapel Hill, NC 27599-3175
919.962.1749
geom@cs.unc.edu