Image-based flow visualization: Difference between revisions

Revision as of 13:36, 26 August 2011

Revision as of 15:35, 28 August 2011

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In [[Scientific Visualization]] '''Image-Based Flow Visualization''' is a technique proposed by [[Jarke van Wijk]] <ref>{{cite journal|last=van Wijk|first=Jack|title=Image Based Flow Visualization|journal=Proceedings ACM SIGGRAPH 2002, San Antonio, Texas|year=2002|url=http://www.win.tue.nl/~vanwijk/ibfv/ibfv.pdf}}</ref> to visualize flows, like the wind movement of a [[tornado]]. Compared with classical Integration like techniques it has the advantage of producing a whole image at every step. It is a method from the [[Texture advection]] family.

== Principle ==

The main idea is to create a noise texture on a regular grid and then bend this grid according to the flow (the vector field). We then sample the bended grid at the original grid ___location. The output is then an according to the flow displaced version of the noise. To use this for visualization we can for example do this for a few steps and make an animation or also inject some dye on a regular grid and see how this dye got transported away by the flow.

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{{reflist}}

* [http://www.win.tue.nl/~vanwijk/ibfv/ Website of Jarke van Wijk with demo software and pictures]

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