In this paper we introduce volume visualization techniques developed with the aim to enhance interactive exploration of medical datasets. We present volumetric lenses which can be applied to a volume dataset to interactively focus regions of interest within these datasets. During rendering the parts of a volume dataset intersecting the lens, which is defined by a convex 3D shape, are rendered u...

In this work, a simple semi-empirical model is proposed, based on Response Surface Model, RSM, to determine the shape of an attached oblique shock wave emanating from a pointed axisymmetric nose at zero angle of attack. Extensive supersonic visualization images have been compiled from various nose shapes at different Mach numbers, along with some others performed by the author for the present p...

We present an empirical study investigating collaborative and individual decision-making about data using two different information visualization systems. Based on previous research, one system is considered more transparent than the other in terms of visual representation and functionality. We found that people who worked in groups were more correct in their answers for objective questions, ba...

Unstructured grids are extensively used in modern computational solvers and, thus, play an important role in scientific visualization. They come in many different types. One of the most general types are non-convex meshes, which may contain voids and cavities. The lack of convexity presents a problem for several algorithms, often causing performance issues. One way around the complexity of non-...

Simulation has become one of the most important techniques with regard to manufacturing and logistics systems. During modeling and experimenting simulation input and output data have to be presented to different target groups which range from simulation experts and factory planners to representatives of company management, and for different tasks and specific purposes. Different kinds of visual...

This work presents the EUREQA approach for end-user development. The purpose of the tool is to narrow the cognitive gap between the end-user developer's mental model and the software model. The tool uses design patterns as building blocks allowing end-users to create UML class diagram models that capture their domain knowledge. The EUREQA tool hides from view the complexity of code thereby redu...