Feature-Based Visualization of Multifields - Scientific Visualization: Uncertainty, Multifield, Biomedical, and Scalable Visualization - page 183

has to support several such parameters and the possibility to derive new fields from
the given ones. A system for combining multiple volumetric scalar fields by apply-
ing a hierarchy of algebraic and logical operations has been proposed by Woodring
et al. [ 37 ]. Not in all cases, the feature definition is known in advance. For an interac-
tive feature specification, Doleisch et al. [ 8 ] presented a feature definition language,
in which a hierarchy of subset operations is built up interactively by using “brushing”
operations in a system offering multiple views, i.e., projections of the data space.
The feature definition language has been applied to hurricane simulations [ 9 ] and
chemical reactions in biological processes [ 35 ]. A similar system of linked views
has been used by Blaas et al. [ 4 ] for medical applications, especially for studying
tumors for surgery planning.
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