by Stefan Guthe, Stefan Gumhold, Wolfgang Straßer
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 framerates 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.
Reference:
Interactive Visualization of Volumetric Vector Fields Using Texture Based Particles (Stefan Guthe, Stefan Gumhold, Wolfgang Straßer), In Proceedings of WSCG Conference, 2002.
Bibtex Entry:
@INPROCEEDINGS{Guthe-2002-Interactivea,
AUTHOR = {Stefan Guthe and Stefan Gumhold and Wolfgang Stra{\ss}er},
AFFILIATIONS = {CGV,GRIS},
AREAS = {areava},
BOOKTITLE = {Proceedings of WSCG Conference},
TITLE = {Interactive Visualization of Volumetric Vector Fields Using Texture Based Particles},
YEAR = {2002},
URL = {http://tu-dresden.de/die_tu_dresden/fakultaeten/fakultaet_informatik/smt/cgv/publikationen/2002/ivovvfutbp/Guthe-2002-Interactive.pdf},
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
framerates 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.},
KEYWORDS = {flow visualization, vector field visualization, flow animation, steady flow, splatting}
}