Sascha Gebhardt

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Pie menus are a well-known technique for interacting with 2D environments and so far a large body of research documents their usage and optimizations. Yet, comparatively little research has been done on the usability of pie menus in immersive virtual environments (IVEs). In this paper we reduce this gap by presenting an implementation and evaluation of an(More)
The growing amount of digital music content and the increasing connectivity of vehicles raise new challenges in terms of media access for vehicle drivers. Creating easily a personalized playlist in vehicles involves a unified representation of various metadata, combined with a mobile architecture addressing media resolution and aggregation issues. This(More)
* Corresponding author. This is useful to know for communication with the appropriate person in cases with more than one author. Abstract – Standardised web services are the backbone of the ELVIS system, the EnvironmentaL Visualisation and Information System supporting Vietnamese stake holders in the fields of water related management processes based on(More)
Virtual Reality (VR) has been an active field of research for several decades, with 3D interaction and 3D User Interfaces (UIs) as important sub-disciplines. However, the development of 3D interaction techniques and in particular combining several of them to construct complex and usable 3D UIs remains challenging, especially in a VR context. In addition,(More)
The increasing amount of information available on the internet has raised a lot of challenges in terms of organization of knowledge. In the domain of music indexing, the multimedia research has produced valuable techniques to sort content and compute similarity measures based on different criteria from low-level features like acoustic properties to(More)
The Oscar-Brefeld-Award 2006 for young scientists was handed out to Dr. Sascha Gebhardt, Technical University of Cottbus, Germany, by the German Mycological Society during the Society’s International Conference held in Tübingen. He received the award for his studies on “Spatial structure and chronosequence of ectomycorrhizal communities in Quercus rubra(More)
Understanding multi-dimensional data and in particular multi-dimensional dependencies is hard. Information visualization can help to understand this type of data. Still, the problem of how users gain insights from such visualizations is not well understood. Both the visualizations and the users play a role in understanding the data. In a case study, using(More)