PointWorks: abstraction and rendering of sparsely scanned outdoor environments

  • Authors:
  • Hui Xu;Nathan Gossett;Baoquan Chen

  • Affiliations:
  • University of Minnesota at Twin Cities, MN;University of Minnesota at Twin Cities, MN;University of Minnesota at Twin Cities, MN

  • Venue:
  • EGSR'04 Proceedings of the Fifteenth Eurographics conference on Rendering Techniques
  • Year:
  • 2004

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Abstract

This paper describes a system, dubbed PointWorks, for rendering three-dimensionally digitized outdoor environments in non-photorealistic rendering styles. The challenge in rendering scanned outdoor environments is accommodating their inaccuracy, incompleteness, and large size to deliver a smooth animation without suggesting the underlying data deficiency. The key method discussed in this paper is employing artistic drawing techniques to illustrate features of varying importance and accuracy. We employ a point-based representation of the scanned environment and operate directly on point-based models for abstraction and rendering. We develop a framework for producing mainly two artistic styles: painterly and profile lines. Strategies have also been employed to leverage modern graphics hardware for achieving interactive rendering of large scenes.