Modeling Physical Fields for Interrogative Visualization
نویسنده
چکیده
Interrogative visualization refers to the process of interactive computer graphics display and accurate quantitative querying of physical data. Quantitative querying includes search for metric, combinato-rial and topological information. To support this paradigm, we build uniform, compact, co-registered representations (spline models) of multiple physical data elds over the same domain. Dense, unstructured volumetric scalar elds are approximated by C 1-continuous trivariate polynomial spline functions of low degree. Additionally, these spline functions are also used to model scattered scalar elds sampled over a manifold surface in the volume. Using both implicit polynomial spline surfaces and trivariate polynomial spline functions allows for model representations of both manifold and associated scalar elds over the same spatial decomposition. Quantitative querying is made eecient by utilizing various search structures over the modeled eld data.
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