MISC

2002年

A technique for skeletonizing a scalar field using a critical point graph: Application to a weather simulation

American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
  • Kazuma Kamisawa
  • ,
  • Koji Sakai
  • ,
  • Koji Koyamada
  • ,
  • Akio Doi

448
1
開始ページ
27
終了ページ
34
記述言語
英語
掲載種別
DOI
10.1115/PVP2002-1533

We present a visualization technique which a large scale detects the structure at all scales removing from the user the responsibility of extracting information implicit in the data, and presenting the structure explicitly for analysis and retrieval. In typical scientific applications, data is represented at the nodes of a mesh of elements and interpolated linearly across the interior of the elements. A critical point exists in the gradient field of the Scalar filed. It is possible at few cost to express the Scalar field using the graph which connected the critical point.In past, we proposed a technique for calculating isosurfaces efficiently using an extrema skeleton, which consists of elements and connects all extrema points[3]. In this algorithm, extrema points in a scalar field are first extracted. A graph is then generated in which the extrema points are taken as nodes. And our work can be regarded as an extension of our original technique, because our new skeleton connects saddle points in addition to extrema points. To confirm the effectiveness of our technique, we extract features skeletons of CFD results for forecasting weather and determine linear correlation between multiple scalar variables such as wind velocity, temperature, and humidity.

リンク情報
DOI
https://doi.org/10.1115/PVP2002-1533
J-GLOBAL
https://jglobal.jst.go.jp/detail?JGLOBAL_ID=200902188598957283
URL
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0036382208&origin=inward
ID情報
  • DOI : 10.1115/PVP2002-1533
  • ISSN : 0277-027X
  • J-Global ID : 200902188598957283
  • SCOPUS ID : 0036382208

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