What is the SemSeg project about?
The thorough analysis of flows plays an important role in many different
processes, such as airplane and car design, environmental research, and
medicine. Scientific Visualization and its subfield flow visualization
have provided a variety of techniques for the domain experts to visually
analyze large and complex flow data sets. Among them, so-called
topology-based methods play an important role.
Vector field topology (VFT) is a mathematically rigorous theory that
reveals the essential structure of a static vector field.
However, this approach is only fully valid for static vector fields.
Recent developments in the target domains of this project show a clear
transition from steady to unsteady flow scenarios.
Accordingly, we have to see that the traditionally proven approaches
do not apply any more and that a conceptual change in the methodology
of visual analysis is necessary.
Topology-based methods which account for the complete dynamic behaviour
of flow fields are strongly needed but do not exist.
Steps toward this goal have been done from several sides, delivering
promising but yet only partial results.
It is the objective of this project to research a new segmentation method
for unsteady flows that has the elegance and specificity
of (steady) VFT, but which provides correct results for unsteady flows
This project aims at the formulation of a sound theoretical mechanism
to describe structural features in time-dependent flow.
Similar to the case of steady flow, were topology has proven its usefulness
in many years, it is straight-forward to expect that the new approach will
also establish its important role in the analysis and discussion of
time-dependent flow scenarios.
As part of a successful project, concrete algorithms to extract and
visualize the topological structures are derived from the new mechanism.
Implementations of them will allow studying the usefulness on a number of
real-life flow data from different areas of application.
Who is in need of SemSeg research?
In the following, we sketch a limited subset of the selected potential
application areas wrt. the solutions that we expect to result from the
Meteorology, climate research
A brochure about the SemSeg project
We have consolidated our six-sided brochure
about the SemSeg project, which can be downloaded from this web page.