Visualizing Contour Distributions in 2D Ensemble Data
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Date
2013
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association
Abstract
Overlaid plots of iso-contours in individual members of a scalar ensemble field are a popular concept to visualize the data uncertainty. However, such plots do not allow inferring on the spatial cumulative probability distribution of the iso-contours, and they cannot reveal distribution characteristics like spread and topology for very large amounts of contours. In this paper, we propose a new visualization technique for iso-contours in ensemble data sets to overcome these limitations. Our technique makes no assumption about a stochastic uncertainty model, rendering it suitable for arbitrary ensemble distributions. It computes a statistical summary of the ensemble over the spatial domain, including probability density values for arbitrary domain points. From this information, the uncertainty and topology of iso-contours can be determined, as well as the variations in gradient magnitude around these contours. Since the visualization is carried out on the GPU, our approach allows analyzing even very large ensemble data sets at interactive rates.
Description
@inproceedings{10.2312:PE.EuroVisShort.EuroVisShort2013.055-059,
booktitle = {EuroVis - Short Papers},
editor = {Mario Hlawitschka and Tino Weinkauf},
title = {{Visualizing Contour Distributions in 2D Ensemble Data}},
author = {Pfaffelmoser, Tobias and Westermann, Rüdiger},
year = {2013},
publisher = {The Eurographics Association},
ISBN = {978-3-905673-99-9},
DOI = {10.2312/PE.EuroVisShort.EuroVisShort2013.055-059}
}