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Erschienen in:
2012 | OriginalPaper | Buchkapitel
A Variance Based FTLE-Like Method for Unsteady Uncertain Vector Fields
verfasst von : Dominic Schneider, Jan Fuhrmann, Wieland Reich, Gerik Scheuermann
Erschienen in: Topological Methods in Data Analysis and Visualization II
Verlag: Springer Berlin Heidelberg
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We present a novel approach to obtain FTLE-like structures and visualizations for uncertain vector fields. We compute the flow map for a time interval now mapping to particle distributions rather than single positions. We use a variance-based analysis to measure the maximal stretching of the distributions thereby obtaining FTLE-like structures for uncertain vector fields. In the case of deterministic vector fields, the results are visually almost identical to FTLE. We analyze our method in the presence of errors by applying it to a number of synthetic and real world datasets.