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Documents authored by Weiskopf, Daniel

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.8.6.77
Ubiquitous Gaze Sensing and Interaction (Dagstuhl Seminar 18252)

Authors: Lewis Chuang, Andrew Duchowski, Pernilla Qvarfordt, and Daniel Weiskopf

Published in: Dagstuhl Reports, Volume 8, Issue 6 (2019)

Abstract
This report documents the program and outcomes of the "'. The miniaturization of optical devices and advances in computer vision, as well as a lower cost point, have led to an increased integration of gaze sensing capabilities in computing systems. Eye tracking is no longer restricted to a well controlled laboratory setting, but moving into everyday settings. Therefore, this Dagstuhl Seminar brought together experts in computer graphics, signal processing, visualization, human-computer interaction, data analytics, pattern analysis and classification along with researchers who employ eye tracking across a diverse set of disciplines: geo-information systems, medicine, aviation, psychology, and neuroscience, to explore future applications and to identify requirements for reliable gaze sensing technology. This fostered a dialog and allowed: (1) computing scientists to understand the problems that are faced in recording and interpreting gaze data; (2) gaze researchers to consider how modern computing techniques could potentially advance their research. Other issues concerning the ubiquitous deployment of gaze sensing and interaction were also discussed, such ethical and privacy concerns when deploying gaze monitoring devices in everyday settings.
Cite as

Lewis Chuang, Andrew Duchowski, Pernilla Qvarfordt, and Daniel Weiskopf. Ubiquitous Gaze Sensing and Interaction (Dagstuhl Seminar 18252). In Dagstuhl Reports, Volume 8, Issue 6, pp. 77-148, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2019)

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@Article{chuang_et_al:DagRep.8.6.77,
  author =	{Chuang, Lewis and Duchowski, Andrew and Qvarfordt, Pernilla and Weiskopf, Daniel},
  title =	{{Ubiquitous Gaze Sensing and Interaction (Dagstuhl Seminar 18252)}},
  pages =	{77--148},
  journal =	{Dagstuhl Reports},
  ISSN =	{2192-5283},
  year =	{2019},
  volume =	{8},
  number =	{6},
  editor =	{Chuang, Lewis and Duchowski, Andrew and Qvarfordt, Pernilla and Weiskopf, Daniel},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagRep.8.6.77},
  URN =		{urn:nbn:de:0030-drops-100571},
  doi =		{10.4230/DagRep.8.6.77},
  annote =	{Keywords: eye tracking, computer vision, pattern analysis, ubiquitous computing, user modeling}
}
Document
DOI: 10.4230/DFU.Vol2.SciViz.2011.276
Interactive Isocontouring of High-Order Surfaces

Authors: Christian Pagot, Joachim Vollrath, Filip Sadlo, Daniel Weiskopf, Thomas Ertl, and João Luiz Dihl Comba

Published in: Dagstuhl Follow-Ups, Volume 2, Scientific Visualization: Interactions, Features, Metaphors (2011)

Abstract
Scientists and engineers are making increasingly use of hp-adaptive discretization methods to compute simulations. While techniques for isocontouring the high-order data generated by these methods have started to appear, they typically do not facilitate interactive data exploration. This work presents a novel interactive approach for approximate isocontouring of high-order data. The method is based on a two-phase hybrid rendering algorithm. In the first phase, coarsely seeded particles are guided by the gradient of the field for obtaining an initial sampling of the isosurface in object space. The second phase performs ray casting in the image space neighborhood of the initial samples. Since the neighborhood is small, the initial guesses tend to be close to the isosurface, leading to accelerated root finding and thus efficient rendering. The object space phase affects the density of the coarse samples on the isosurface, which can lead to holes in the final rendering and overdraw. Thus, we also propose a heuristic, based on dynamical systems theory, that adapts the neighborhood of the seeds in order to obtain a better coverage of the surface. Results for datasets from computational fluid dynamics are shown and performance measurements for our GPU implementation are given.
Cite as

Christian Pagot, Joachim Vollrath, Filip Sadlo, Daniel Weiskopf, Thomas Ertl, and João Luiz Dihl Comba. Interactive Isocontouring of High-Order Surfaces. In Scientific Visualization: Interactions, Features, Metaphors. Dagstuhl Follow-Ups, Volume 2, pp. 276-291, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2011)

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@InCollection{pagot_et_al:DFU.Vol2.SciViz.2011.276,
  author =	{Pagot, Christian and Vollrath, Joachim and Sadlo, Filip and Weiskopf, Daniel and Ertl, Thomas and Comba, Jo\~{a}o Luiz Dihl},
  title =	{{Interactive Isocontouring of High-Order Surfaces}},
  booktitle =	{Scientific Visualization: Interactions, Features, Metaphors},
  pages =	{276--291},
  series =	{Dagstuhl Follow-Ups},
  ISBN =	{978-3-939897-26-2},
  ISSN =	{1868-8977},
  year =	{2011},
  volume =	{2},
  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.Vol2.SciViz.2011.276},
  URN =		{urn:nbn:de:0030-drops-33052},
  doi =		{10.4230/DFU.Vol2.SciViz.2011.276},
  annote =	{Keywords: High-order finite elements, isosurface visualization, GPU}
}
Document
DOI: 10.4230/DFU.SciViz.2010.289
A Survey of Visualization Methods for Special Relativity

Authors: Daniel Weiskopf

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

Abstract
This paper provides a survey of approaches for special relativistic visualization. Visualization techniques are classified into three categories: Minkowski spacetime diagrams, depictions of spatial slices at a constant time, and virtual camera methods that simulate image generation in a relativistic scenario. The paper covers the historical outline from early hand-drawn visualizations to state-of-the-art computer-based visualization methods. This paper also provides a concise presentation of the mathematics of special relativity, making use of the geometric nature of spacetime and relating it to geometric concepts such vectors and linear transformations.
Cite as

Daniel Weiskopf. A Survey of Visualization Methods for Special Relativity. In Scientific Visualization: Advanced Concepts. Dagstuhl Follow-Ups, Volume 1, pp. 289-302, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2010)

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@InCollection{weiskopf:DFU.SciViz.2010.289,
  author =	{Weiskopf, Daniel},
  title =	{{A Survey of Visualization Methods for Special Relativity}},
  booktitle =	{Scientific Visualization: Advanced Concepts},
  pages =	{289--302},
  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.2010.289},
  URN =		{urn:nbn:de:0030-drops-27115},
  doi =		{10.4230/DFU.SciViz.2010.289},
  annote =	{Keywords: Special Relativity, Minkowski, Spacetime, Virtual Camera}
}
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