Research Projects


Radio Wave Propagation


Virtual Brain


Particles Tracing

Flow Visualization

- Interactive Particle Tracing in Time-Varying Tetrahedral Grids -

virtual_particles virtual_particles

Particle tracing methods are a fundamental class of techniques for vector field visualization. Specifically, interactive particle advection allows the user to rapidly gain an intuitive understanding of flow structures. Yet, it poses challenges in terms of computational cost and memory bandwidth. This is particularly true if the underlying data is time-dependent and represented by a series of unstructured meshes. We propose a novel approach which maps the aforementioned computations to modern many-core compute devices in order to achieve parallel, interactive particle advection. The problem of cell location on unstructured tetrahedral meshes is addressed by a two-phase search scheme, which is performed entirely on the compute device. A CUDA implementation of the proposed algorithm is evaluated on the basis of one synthetic and two real-world data sets. In particluar, this includes an assessment of the effects of data reduction on the advection accuracy and performance.


Interactive Seeding

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