Interactive Exploratory Visualization of 2D Vector Fields
We present several techniques to interactively explore representations of 2D vector fields. Through a set of simple hand postures used on large, touch-sensitive displays, our approach allows individuals to custom-design glyphs (arrows, lines, etc.) that best reveal patterns of the underlying dataset. Interactive exploration of vector fields is facilitated through freedom of glyph placement, glyph density control, and animation. The custom glyphs can be applied individually to probe specific areas of the data but can also be applied in groups to explore larger regions of a vector field. Re-positionable sources from which glyphs—animated according to the local vector field—continue to emerge are used to examine the vector field dynamically. The combination of these techniques results in an engaging visualization with which the user can rapidly explore and analyze varying types of 2D vector fields, using a virtually infinite number of custom-designed glyphs.
(:neo_flv-player (http:../personal/videos/)Isenberg_2008_IEV(.flv) width=320 height=240 startimage="../personal/videos/Isenberg_2008_IEV.jpg" -link:)
You can download a demo of the Interactive Exploratory Visualization of 2D Vector Fields (Win32, 37.9 MB) and try it out for yourself. To be fully functional, however, the demo requires Smart DViT hardware.
Visualization of storm Emma over Europe, interactively created with the above technique:
This technique is based on a buffer framework for supporting responsive interaction as well as hand posture driven stroke-based non-photorealistic rendering.
|Tobias Isenberg, Maarten H. Everts, Jens Grubert, and Sheelagh Carpendale (2008) Interactive Exploratory Visualization of 2D Vector Fields. Computer Graphics Forum, 27(3):983–990, May 2008.|
|Tobias Isenberg, Jens Grubert, Maarten H. Everts, and Sheelagh Carpendale (2008) Hands-On Analysis and Illustration: Interactive Exploratory Visualization of Vector Fields. In Proceedings of the Fourteenth Annual Conference of the Advanced School for Computing and Imaging (ASCI CONFERENCE, June 11–13, Het Heijderbos, Heijen, The Netherlands)., pages 222–229, 2008. Also see the article in Computer Graphics Forum.|
|Jens Grubert (2008) Interacting with Stroke-Based Non-Photorealistic Rendering on Large Displays. Honor’s thesis, Department of Computer Science, University of Magdeburg, Germany, February 2008.|
This work was done at the Scientific Visualization and Computer Graphics Lab of the University of Groningen, the Netherlands, in collaboration with and based on work done at the Innovis group at the Interactions Lab of the University of Calgary, Canada.