• 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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    Stable Feature Flow Fields

    by  • May 31, 2011 • Highlights

    Feature Flow Fields are a well-accepted approach for extracting and tracking features. In the original approach, the stream lines around the feature line may diverge from it; creating a numerically unstable situation. We introduce Stable Feature Flow Fields which guarantee that the neighborhood of a feature line has always converging behavior. This way, we...

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