Dynamic isosurface extraction and level-of-detail in voxel space

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Description

A new visualization technique is reported, which dramatically improves interactivity for scientific visualizations by working directly with voxel data and by employing efficient algorithms and data structures. This discussion covers the research software, the file structures, examples of data creation, data search, and triangle rendering codes that allow geometric surfaces to be extracted from volumetric data. Uniquely, these methods enable greater interactivity by allowing an analyst to dynamically specify both the desired isosurface threshold and required level-of-detail to be used while rendering the image. The key idea behind this visualization paradigm is that various levels-of-detail are represented as differently sized ... continued below

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17 p.

Creation Information

Linebarger, J.M.; Lamphere, P.B. & Breckenridge, A.R. June 1, 1998.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

A new visualization technique is reported, which dramatically improves interactivity for scientific visualizations by working directly with voxel data and by employing efficient algorithms and data structures. This discussion covers the research software, the file structures, examples of data creation, data search, and triangle rendering codes that allow geometric surfaces to be extracted from volumetric data. Uniquely, these methods enable greater interactivity by allowing an analyst to dynamically specify both the desired isosurface threshold and required level-of-detail to be used while rendering the image. The key idea behind this visualization paradigm is that various levels-of-detail are represented as differently sized hexahedral virtual voxels, which are stored in a three-dimensional kd-tree; thus the level-of-detail representation is done in voxel space instead of the traditional approach which relies on surface or geometry space decimations. This algorithm has been implemented as an integral component in the EIGEN/VR project at Sandia National Laboratories, which provides a rich environment for scientists to interactively explore and visualize the results of very large-scale simulations performed on massively parallel supercomputers.

Physical Description

17 p.

Notes

OSTI as DE98005688

Source

  • Other Information: PBD: Jun 1998

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  • Other: DE98005688
  • Report No.: SAND--98-1224
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/658445 | External Link
  • Office of Scientific & Technical Information Report Number: 658445
  • Archival Resource Key: ark:/67531/metadc707496

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Creation Date

  • June 1, 1998

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • April 13, 2016, 1:36 p.m.

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Linebarger, J.M.; Lamphere, P.B. & Breckenridge, A.R. Dynamic isosurface extraction and level-of-detail in voxel space, report, June 1, 1998; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc707496/: accessed September 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.