Research Group of Prof. Dr. M. Griebel
Institute for Numerical Simulation

  author = {Gerstner, T.},
  title = {{T}op-{D}own {V}iew-{D}ependent {T}errain {T}riangulation
		  using the {O}ctagon {M}etric},
  institution = {Institut f\"ur Angewante Mathematik},
  pdf = { 1},
  abstract = { In this paper, we introduce the octagon metric as a
		  universal distance metric for the interactive visualization
		  of large-scale terrain data. Based on recursive bisection
		  triangle meshes, this metric automatically ensures valid
		  triangular meshes without cracks or T-junctions. We will
		  show how the octagon metric can be used for view-dependent
		  refinement at little computational cost and with no
		  additional storage requirements. It can easily be combined
		  with a suitable geometric error metric to extract and
		  render adaptive view-dependent terrain meshes in an
		  output-sensitive way. We will show the performance of the
		  whole system, which is straightforward to implement, in
		  several examples. },
  year = {2003},
  annote = {report}