Welcome on the homepage of the chair "Computer Graphics Systems" of Prof. Jürgen Döllner and his team. We like to inform you about our teaching and ongoing research activities in the analysis, planning and construction of computer graphics and multimedia systems.
Matthias Trapp currently works as a post-doctoral researcher, lecturer, and head of the research group '4DnD-Geovisualization' (InnoProfile Transfer Initiative) at HPI, Computergraphics Systems Chair. His research interests include the following topics:
GPU-based image and video processing techniques and frameworks
Interactive GPU-based rendering techniques for massive spatio-temporal data
Focus+context visualization techniques for 3D virtual environments
Analysis and Exploration of Virtual 3D-Citymodels using 3D Information Lenses
This thesis addresses real-time rendering techniques for 3D Information-Lenses, which are based on the focus & context metaphor. It analyzes, conceives, implements and reviews its applicability to objects and structures of virtual 3D city models. In contradiction to digital terrain models, the application of focus & context visualization to virtual 3D city models is barely researched. However, the purposeful visualization of contextual data of is extreme importance for the interactive exploration and analysis of this field. Programmable hardware enables the implementation of new lens-techniques, which allows the augmentation of the perceptive and cognitive quality of the visualization, compared to classical perspective projections. A set of 3D information-lenses is integrated into a 3D scene graph system: 1.) Occlusion Lenses modify the appearance of virtual 3D city-model objects in order to resolve their occlusion and consequently facilitate the navigation. 2.) Best-View Lenses display city-model objects in a priority-based manner and mediate their meta-information. Thus, they support exploration and navigation of virtual 3D-city-models. 3.) Color and deformation lenses modify the appearance and geometry of 3D city-models to facilitate their perception. The present techniques for 3D information lenses and the application to virtual 3D city models clarify their potential for interactive visualization and form a base for further development.
Colonia3D – Potenziale interaktiver Kommunikation von digitaler Denkmalpflege in öffentlichen Räumen, Prometheus Conference 2011, University of Cologne, Cologne/Germany
Kommunikation von digitaler Denkmalpflege in öffentlichen Räumen am Beispiel des Projektes Colonia3D, Invited Talk at the Department of Photogrammetry & Laserscanning at the HCU (HafenCity University), Hamburg/ Germany
High-Level Vector Editing, Invited Talk at the Computer Science Department of the Courant Institute of Mathematical Sciences at New York University, New York/USA, 2010