| Revision as of 16:16, 13 November 2011 editTobo~enwiki (talk | contribs)163 edits →Principle← Previous edit | Revision as of 16:17, 13 November 2011 edit undoTobo~enwiki (talk | contribs)163 editsNo edit summaryNext edit → | ||
| Line 1: | Line 1: | ||
| {{tone|date=October 2011}}{{person|date=September 2011}} | |||
| In ], '''image-based flow visualization''' is a technique proposed by ] <ref>{{cite journal|last=van Wijk|first=Jack|authorlink=Jack van Wijk|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 ]. Compared with classical Integration like techniques it has the advantage of producing a whole image at every step. It is a method from the ] family. | In ], '''image-based flow visualization''' is a technique proposed by ] <ref>{{cite journal|last=van Wijk|first=Jack|authorlink=Jack van Wijk|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 ]. Compared with classical Integration like techniques it has the advantage of producing a whole image at every step. It is a method from the ] family. | ||
Revision as of 16:17, 13 November 2011
In scientific visualization, image-based flow visualization is a technique proposed by Jarke van Wijk 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 core idea is to create a noise texture on a regular grid and then bend this grid according to the flow (the vector field). The bended grid is then sampled at the original grid locations. Thus, the output is a version of the noise, that is displaced according to the flow.
The advantage of this approach is that it can be accelerated on modern graphics hardware, thus allowing for real-time or almost real-time simulation of 2D flow data.
References
- van Wijk, Jack (2002). "Image Based Flow Visualization" (PDF). Proceedings ACM SIGGRAPH 2002, San Antonio, Texas.