### On Moving Least Squares Based Flow Visualization

Harald Obermaier, Martin Hering-Bertram, JÃ¶Rg Kuhnert & Hans Hagen
Modern simulation and measurement methods tend to produce meshfree data sets if modeling of processes or objects with free surfaces or boundaries is desired. In Computational Fluid Dynamics (CFD), such data sets are described by particle-based vector fields. This paper presents a summary of a selection of methods for the extraction of geometric features of such point-based vector fields while pointing out its challenges, limitations, and applications.