Title: Interactive visualization of volumetric vector fields using texture based particles
Authors: Guthe, Stefan
Gumhold, Stefan
Straßer, Wolfgang
Citation: WSCG '2002: Short Communication Papers: The 10-th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision 2002, 4.-8. February 2002 Plzeň: Conference proceedings, p. 33-41.
Issue Date: 2002
Publisher: UNION Agency
Document type: konferenční příspěvek
URI: http://wscg.zcu.cz/wscg2002/Papers_2002/C19.pdf
ISBN: 1213-6972 (hardcopy)
1213-6980 (CD-ROM)
1213-6964 (on-line)
Keywords: vizualizace toku;vizualizace vektorového pole;animace toku
Keywords in different language: flow visualization;vector field visualization;flow animation
Abstract: This paper introduces a new approach to the visualization of volumetric vector fields with an adaptive distribution of animated particles that show properties of the underlying steady flow. The shape of the particles illustrates the direction of the vector field in a natural way. The particles are transported along streamlines and their velocity reflects the local magnitude of the vector field. Further physical quantities of the underlying flow can be mapped to the emissive color, the transparency and the length of the particles. A major effort has been made to achieve interactive frame rates for the animation of a large number of particles while minimizing the error of the computed streamlines. There are three main advantages of the new method. Firstly, the animation of the particles diminishes the inherent occlusion problem of volumetric vector field visualization, as the human eye can trace an animated particle even if it is highly occluded. The second advantage is the variable resolution of the visualization method. More particles are distributed in regions of interest. We present a method to automatically adjust the resolution to features of the vector field. Finally, our method is scalable to the computational and rasterization power of the visualization system by simply adjusting the number of visualized particles.
Rights: © UNION Agency
Appears in Collections:WSCG '2002: Short Communication Papers

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Please use this identifier to cite or link to this item: http://hdl.handle.net/11025/6033

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