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Documents authored by Hansen, Charles

Found 2 Possible Name Variants:

Hansen, Charles D.

Document
DOI: 10.4230/DagRep.9.6.95
Astrographics: Interactive Data-Driven Journeys through Space (Dagstuhl Seminar 19262)

Authors: Alyssa A. Goodman, Charles D. Hansen, Daniel Weiskopf, and Anders Ynnerman

Published in: Dagstuhl Reports, Volume 9, Issue 6 (2020)

Abstract
This report documents the program and outcomes of the Dagstuhl Seminar 19262 "Astrographics: Interactive Data-Driven Journeys through Space". The seminar consisted of introductory talks, which are presented first in this documents, followed by discussions in break-out groups whose results were reported back to all participants after each break-out session.
Cite as

Alyssa A. Goodman, Charles D. Hansen, Daniel Weiskopf, and Anders Ynnerman. Astrographics: Interactive Data-Driven Journeys through Space (Dagstuhl Seminar 19262). In Dagstuhl Reports, Volume 9, Issue 6, pp. 95-124, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2019)

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@Article{goodman_et_al:DagRep.9.6.95,
  author =	{Goodman, Alyssa A. and Hansen, Charles D. and Weiskopf, Daniel and Ynnerman, Anders},
  title =	{{Astrographics: Interactive Data-Driven Journeys through Space (Dagstuhl Seminar 19262)}},
  pages =	{95--124},
  journal =	{Dagstuhl Reports},
  ISSN =	{2192-5283},
  year =	{2019},
  volume =	{9},
  number =	{6},
  editor =	{Goodman, Alyssa A. and Hansen, Charles D. and Weiskopf, Daniel and Ynnerman, Anders},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagRep.9.6.95},
  URN =		{urn:nbn:de:0030-drops-114890},
  doi =		{10.4230/DagRep.9.6.95},
  annote =	{Keywords: astronomy, data visualization, immersive environments, planetariums, space exploration}
}
Document
DOI: 10.4230/DagRep.4.6.1
Scientific Visualization (Dagstuhl Seminar 14231)

Authors: Min Chen, Charles D. Hansen, Penny Rheingans, and Gerik Scheuermann

Published in: Dagstuhl Reports, Volume 4, Issue 6 (2015)

Abstract
This report documents the program and the outcomes of Dagstuhl Seminar 14231 "Scientific Visualization". It includes a discussion of the motivation and overall organization, an abstract from each of the participants, and a report from each of the working groups.
Cite as

Min Chen, Charles D. Hansen, Penny Rheingans, and Gerik Scheuermann. Scientific Visualization (Dagstuhl Seminar 14231). In Dagstuhl Reports, Volume 4, Issue 6, pp. 1-28, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2014)

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@Article{chen_et_al:DagRep.4.6.1,
  author =	{Chen, Min and Hansen, Charles D. and Rheingans, Penny and Scheuermann, Gerik},
  title =	{{Scientific Visualization (Dagstuhl Seminar 14231)}},
  pages =	{1--28},
  journal =	{Dagstuhl Reports},
  ISSN =	{2192-5283},
  year =	{2014},
  volume =	{4},
  number =	{6},
  editor =	{Chen, Min and Hansen, Charles D. and Rheingans, Penny and Scheuermann, Gerik},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagRep.4.6.1},
  URN =		{urn:nbn:de:0030-drops-46821},
  doi =		{10.4230/DagRep.4.6.1},
  annote =	{Keywords: data visualization, multi-fields, uncertainty, environmental visualization}
}
Document
DOI: 10.4230/DagRep.1.6.1
Scientific Visualization (Dagstuhl Seminar 11231)

Authors: Min Chen, Hans Hagen, Charles D. Hansen, and Arie Kaufman

Published in: Dagstuhl Reports, Volume 1, Issue 6 (2011)

Abstract
This report documents the program and the outcomes of Dagstuhl Seminar 11231 ``Scientific Visualization''.
Cite as

Min Chen, Hans Hagen, Charles D. Hansen, and Arie Kaufman. Scientific Visualization (Dagstuhl Seminar 11231). In Dagstuhl Reports, Volume 1, Issue 6, pp. 1-23, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2011)

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@Article{chen_et_al:DagRep.1.6.1,
  author =	{Chen, Min and Hagen, Hans and Hansen, Charles D. and Kaufman, Arie},
  title =	{{Scientific Visualization (Dagstuhl Seminar 11231)}},
  pages =	{1--23},
  journal =	{Dagstuhl Reports},
  ISSN =	{2192-5283},
  year =	{2011},
  volume =	{1},
  number =	{6},
  editor =	{Chen, Min and Hagen, Hans and Hansen, Charles D. and Kaufman, Arie},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagRep.1.6.1},
  URN =		{urn:nbn:de:0030-drops-32574},
  doi =		{10.4230/DagRep.1.6.1},
  annote =	{Keywords: Scientific Visualization, Biomedical Visualization, Integrated Multifield Visualization, Uncertainty Visualization, Scalable Visualization}
}

Hansen, Charles

Document
DOI: 10.4230/DFU.SciViz.2010.78
CSG Operations of Arbitrary Primitives with Interval Arithmetic and Real-Time Ray Casting

Authors: Younis Hijazi, Aaron Knoll, Mathias Schott, Andrew Kensler, and Charles Hansen

Published in: Dagstuhl Follow-Ups, Volume 1, Scientific Visualization: Advanced Concepts (2010)

Abstract
We apply Knoll et al.'s algorithm [Knoll et al., "Fast ray tracing of arbitrary implicit surfaces with interval and affine arithmetic.", Comput. Graph. Forum, 28(1):26–40, 2009] to interactively ray-cast constructive solid geometry (CSG) objects of arbitrary primitives represented as implicit functions. Whereas modeling globally with implicit surfaces suffers from a lack of control, implicits are well-suited for arbitrary primitives and can be combined through various operations. The conventional way to represent union and intersection with interval arithmetic (IA) is simply using min and max but other operations such as the product of two forms can be useful in modeling joints between multiple objects. Typical primitives are objects of simple shape, e.g. cubes, cylinders, spheres, etc. Our method handles arbitrary primitives, e.g. superquadrics or non-algebraic implicits. Subdivision and interval arithmetic guarantee robustness whereas GPU ray casting allows for fast and aesthetic rendering. Indeed, ray casting parallelizes efficiently and trivially and thus takes advantage of the continuous increasing computational power of hardware (CPUs and GPUs); moreover it lends itself to multi-bounce effects, such as shadows and transparency, which help for the visualization of complicated objects. With our system, we are able to render multi-material CSG trees of implicits robustly, in interactive time and with good visual quality.
Cite as

Younis Hijazi, Aaron Knoll, Mathias Schott, Andrew Kensler, and Charles Hansen. CSG Operations of Arbitrary Primitives with Interval Arithmetic and Real-Time Ray Casting. In Scientific Visualization: Advanced Concepts. Dagstuhl Follow-Ups, Volume 1, pp. 78-89, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2010)

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@InCollection{hijazi_et_al:DFU.SciViz.2010.78,
  author =	{Hijazi, Younis and Knoll, Aaron and Schott, Mathias and Kensler, Andrew and Hansen, Charles},
  title =	{{CSG Operations of Arbitrary Primitives with Interval Arithmetic and Real-Time Ray Casting}},
  booktitle =	{Scientific Visualization: Advanced Concepts},
  pages =	{78--89},
  series =	{Dagstuhl Follow-Ups},
  ISBN =	{978-3-939897-19-4},
  ISSN =	{1868-8977},
  year =	{2010},
  volume =	{1},
  editor =	{Hagen, Hans},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DFU.SciViz.2010.78},
  URN =		{urn:nbn:de:0030-drops-26986},
  doi =		{10.4230/DFU.SciViz.2010.78},
  annote =	{Keywords: Implicit Surface, Constructive Solid Geometry, Interval Arithmetic, Ray Casting}
}
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