Vortices are commonly understood as rotating motions in fluid flows. The analysis of vortices
plays an important role in numerous scientific applications, such as in engineering …

With increasing computing power, it is possible to process more complex fluid simulations.
However, a gap between increasing data size and our ability to visualize them still remains …

In flow visualization, vortex extraction is a long-standing and unsolved problem. For
decades, scientists developed numerous definitions that characterize vortex regions and …

Characteristic curves of vector fields include stream, path, and streak lines. Stream and path
lines can be obtained by a simple vector field integration of an autonomous ODE system, ie …

Smoke rendering is a standard technique for flow visualization. Most approaches are based
on a volumetric, particle based, or image based representation of the smoke. This paper …

We present an algorithm for tracking regions in time‐dependent scalar fields that uses
global knowledge from all time steps for determining the tracks. The regions are defined …

Effective analysis of features in time-varying data is essential in numerous scientific
applications. Feature extraction and tracking are two important tasks scientists rely upon to …

Flow fields are usually visualized relative to a global observer, ie, a single frame of
reference. However, often no global frame can depict all flow features equally well. Likewise …

Many algorithms for scientific visualization and image analysis are rooted in the world of
continuous scalar, vector, and tensor fields, but are programmed in low-level languages and …

We consider temporally evolving trees with changing topology and data: tree nodes may
persist for a time range, merge or split, and the associated data may change. Essentially …