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Open Access Publications from the University of California

Feature Identification and Extraction in Function Fields

  • Author(s): Anderson, John C.
  • Gosink, Luke
  • Duchaineau, Mark A.
  • Joy, Ken
  • et al.

We present interactive techniques for identifying and extracting features in function fields. Function fields map points in $n$-dimensional Euclidean space to 1-dimensional scalar functions. Visual feature identification is accomplished by interactively rendering scalar distance fields, constructed by applying a function-space distance metric over the function field. Combining visual exploration with feature extraction queries, formulated as a set of function-space constraints, facilitates quantitative analysis and annotation. Numerous application domains give rise to function fields. We present results for two-dimensional hyperspectral images, and a simulated time-varying, three-dimensional air quality dataset.

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