Robust epsilon visibility

  title={Robust epsilon visibility},
  author={Florent Duguet and George Drettakis},
Analytic visibility algorithms, for example methods which compute a subdivided mesh to represent shadows, are notoriously unrobust and hard to use in practice. We present a new method based on a generalized definition of extremal stabbing lines, which are the extremities of shadow boundaries. We treat scenes containing multiple edges or vertices in degenerate configurations, (e.g., collinear or coplanar). We introduce a robust ε method to determine whether each generalized extremal stabbing… CONTINUE READING
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Visibility Computations in Densely Occluded Polyhedral Environments

  • S. Teller
  • PhD thesis, UC Berkeley,
  • 1992
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