A Hierarchical Splitting Scheme to Reveal Insight into Highly Self-Occluded Integral Surfaces

Andrea Brambilla, Ivan Viola, Helwig Hauser

ARTICLE, Journal of WSCG, July, 2012

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Abstract

In flow visualization, integral surfaces are of particular interest for their ability to describe trajectories of massless particles. In areas of swirling motion, integral surfaces can become very complex and difficult to understand. Taking inspiration from traditional illustration techniques, such as cut-aways and exploded views, we propose a surface analysis tool based on surface splitting and focus+context visualization. Our surface splitting scheme is hierarchical and at every level of the hierarchy the best cut is chosen according to a surface complexity metric. In order to make the interpretation of the resulting pieces straightforward, cuts are always made along isocurves of specific flow attributes. Moreover, a degree of interest can be specified, so that the splitting procedure attempts to unveil the occluded interesting areas. Through practical examples, we show that our approach is able to overcome the lack of understanding originating from structural occlusion.

Published

Journal of WSCG

• Volume: 20
• Number: 1
• Pages: 57–64
• Publisher: Union Agency
• ISSN: 1213-6972
• Event: WSCG 2012 - 20th International Conference on Computer Graphics, Visualization and Computer Vision
• Location: Pilsen, Czech Republic
• Date: July 2012
• Project: SemSeg
• URL: http://wscg.zcu.cz/JWSCG/

Media

BibTeX

@article{Brambilla12AHierarchical,
 author = {Andrea Brambilla and Ivan Viola and Helwig Hauser},
 title = {A Hierarchical Splitting Scheme to Reveal Insight into Highly Self-Occluded
  Integral Surfaces},
 journal = {Journal of WSCG},
 volume = {20},
 number = {1},
 pages = {57--64},
 ISSN = {1213-6972},
 year = {2012},
 month = {July},
 publisher = {Union Agency},
 abstract = {In flow visualization, integral surfaces are of particular interest for 
  their ability to describe trajectories of massless particles. In areas of swirling 
  motion, integral surfaces can become very complex and difficult to understand. Taking 
  inspiration from traditional illustration techniques, such as cut-aways and exploded 
  views, we propose a surface analysis tool based on surface splitting and focus+context 
  visualization. Our surface splitting scheme is hierarchical and at every level of 
  the hierarchy the best cut is chosen according to a surface complexity metric. In
  order to make the interpretation of the resulting pieces straightforward, cuts are 
  always made along isocurves of specific flow attributes. Moreover, a degree of interest 
  can be specified, so that the splitting procedure attempts to unveil the occluded 
  interesting areas. Through practical examples, we show that our approach is able 
  to overcome the lack of understanding originating from structural occlusion.},
 URL = {http://wscg.zcu.cz/JWSCG/},
 event = {WSCG 2012 - 20th International Conference on Computer Graphics, Visualization
  and Computer Vision},
 location = {Pilsen, Czech Republic},

}