• Highlights

    Characteristic Curves of Vector Fields

    by  • June 8, 2012 • Highlights

    Flows of fluids or gases are of great importance in many technical processes. For example, designing a fuel efficient car involves reducing its aerodynamic drag. To this end, the flow around the car is simulated with a computer program. A subsequent flow analysis reveals vortex structures, which usually have a negative influence on the...

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    Feature-Based Data Analysis

    by  • April 11, 2012 • Highlights

    Computing power increases constantly. While the fastest supercomputer in 1993 had a performance of 59.7 GFlop/s, we are now clearly in the petascale era with twenty installations breaching the 1 PFlop/s barrier (see TOP500 Supercomputer Sites). Along with the computing power, the size and complexity of simulation results is increasing as well. In many...

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    Separatrix Persistence

    by  • June 1, 2011 • Highlights

    Separatrix Persistence measures the feature strength of every point along a separatrix in a topological skeleton. It aids in identifying the most important minimal/maximal lines of a scalar function. Using discrete Morse theory, these extremal lines can be computed without derivatives. We used this to extract salient edges on surfaces as minimal/maximal lines of...

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