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DOI: 10.4230/OASIcs.VLUDS.2011.13

Spherical Terrain Rendering using the hierarchical HEALPix grid

Authors: Rolf Westerteiger, Andreas Gerndt, and Bernd Hamann

Published in: OASIcs, Volume 27, Visualization of Large and Unstructured Data Sets: Applications in Geospatial Planning, Modeling and Engineering - Proceedings of IRTG 1131 Workshop 2011

Abstract

We present an interactive spherical terrain rendering system employing a hierarchical subdivision of the HEALPix coordinate system using quadtrees. Compared to other parameterizations, the scheme avoids singularities and allows for efficient fusion of mixed-resolution digital elevation models and imagery. A Level-of-Detail heuristic is used to guarantee both high performance and visual fidelity. Unified treatment of DEM and imagery data is achieved by performing the HEALPix projection within a GPU shader. The system is applied to the exploration of Mars, using both MOLA (NASA) and HRSC (German Aerospace Center) data sets.

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Rolf Westerteiger, Andreas Gerndt, and Bernd Hamann. Spherical Terrain Rendering using the hierarchical HEALPix grid. In Visualization of Large and Unstructured Data Sets: Applications in Geospatial Planning, Modeling and Engineering - Proceedings of IRTG 1131 Workshop 2011. Open Access Series in Informatics (OASIcs), Volume 27, pp. 13-23, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2012)

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@InProceedings{westerteiger_et_al:OASIcs.VLUDS.2011.13,
  author =	{Westerteiger, Rolf and Gerndt, Andreas and Hamann, Bernd},
  title =	{{Spherical Terrain Rendering using the hierarchical HEALPix grid}},
  booktitle =	{Visualization of Large and Unstructured Data Sets: Applications in Geospatial Planning, Modeling and Engineering - Proceedings of IRTG 1131 Workshop 2011},
  pages =	{13--23},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-939897-46-0},
  ISSN =	{2190-6807},
  year =	{2012},
  volume =	{27},
  editor =	{Garth, Christoph and Middel, Ariane and Hagen, Hans},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.VLUDS.2011.13},
  URN =		{urn:nbn:de:0030-drops-37389},
  doi =		{10.4230/OASIcs.VLUDS.2011.13},
  annote =	{Keywords: terrain rendering}
}

Document

DOI: 10.4230/OASIcs.VLUDS.2010.100

Cartography of Mars in a Virtual Reality Environment

Authors: Rolf Westerteiger

Published in: OASIcs, Volume 19, Visualization of Large and Unstructured Data Sets - Applications in Geospatial Planning, Modeling and Engineering (IRTG 1131 Workshop) (2011)

Abstract

This work aims to investigate the suitability of applying Virtual Reality techniques in the exploration of Mars terrain features in order to support the creation of topographic maps of the planet. Traditionally, these tasks are performed using Geo-Information-Systems (GIS) on desktop workstations, with a two-dimensional projection of the collected map data as the basis on which an operator performs manual feature extraction. After identifying features and characterizing them quantitatively using measurement operators, they are ultimately represented visually by so called geo-objects which are then entered into a GIS database. Within the scope of this project, a system will be developed which enables this workflow to occur entirely within a VR-environment, using appropriate navigation and interaction metaphors. The main goal of the project is to examine whether the more natural immersion in the VR-environment can help to improve the identification and spatial analysis of surface features.

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Rolf Westerteiger. Cartography of Mars in a Virtual Reality Environment. In Visualization of Large and Unstructured Data Sets - Applications in Geospatial Planning, Modeling and Engineering (IRTG 1131 Workshop). Open Access Series in Informatics (OASIcs), Volume 19, pp. 100-110, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2011)

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@InProceedings{westerteiger:OASIcs.VLUDS.2010.100,
  author =	{Westerteiger, Rolf},
  title =	{{Cartography of Mars in a Virtual Reality Environment}},
  booktitle =	{Visualization of Large and Unstructured Data Sets - Applications in Geospatial Planning, Modeling and Engineering (IRTG 1131 Workshop)},
  pages =	{100--110},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-939897-29-3},
  ISSN =	{2190-6807},
  year =	{2011},
  volume =	{19},
  editor =	{Middel, Ariane and Scheler, Inga and Hagen, Hans},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.VLUDS.2010.100},
  URN =		{urn:nbn:de:0030-drops-31023},
  doi =		{10.4230/OASIcs.VLUDS.2010.100},
  annote =	{Keywords: Virtual Reality Environment, interaction metaphors, spatial analysis}
}

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Documents authored by Westerteiger, Rolf

Spherical Terrain Rendering using the hierarchical HEALPix grid

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Cartography of Mars in a Virtual Reality Environment

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