Understanding Urban Environments Through the Use of...

809 views · Published 9 October 2007 · 44:29 · Indexed 20 September 2026

Channel: Google TechTalks · 2007 · Howto & Style

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Google Tech Talks
December 13, 2006

ABSTRACT

For 3D global visualization systems, it is important to be able to render city-sized collections of relatively simple building models at fast speeds without losing spatial coherence. Since traditional mesh simplification algorithms are not designed for collections of simple models, we introduce a method of simplification through merging of similar objects. We incorporate the concept of "urban legibility" from architecture and city-planning as a guideline for simplifying city models. Our algorithm can be broken down into five steps. Hierarchical clustering, cluster merging, polyline simplification, and hierarchical texturing are performed during...

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