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Course 20

Interactive Walkthroughs of Large Geometric Datasets
Level 5.5
A survey of the principles involved in designing interactive walkthroughs of large geometric datasets. The course theme was based on two questions:
1. How can we make effective walkthrough illusions?
2. What are their applications?
The course began with an introduction to interactive walkthroughs and their applications. It discussed taxonomy and representations of geometric datasets. Then it summarized four rendering acceleration techniques: use of image-based representations, model simplification, visibility culling, and dynamic tessellation of spline models. Each speaker surveyed a number of algorithms for each technique and evaluated them with respect to system integration. Next, two speakers presented algorithms for real-time collision detection and managing large geometric datasets for interactive walkthroughs. Finally, the speakers discussed their experiences in developing walkthrough systems for more than a decade and their application of these systems to architectural and CAD datasets.
Dinesh Manocha
University of North Carolina at Chapel Hill
Daniel Aliaga
Lucent Technologies Bell Laboratories
Frederick P. Brooks
Ming C. Lin
Dinesh Manocha
Andrew Wilson

University of North Carolina at Chapel Hill
Jonathan Cohen
Subodh Kumar

Johns Hopkins University
Hansong Zhang

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