My main research interests area: information visualization, visual analytics, human-computer interaction, and computer supported-cooperative work.
This page in in urgent need of an update. I'm working on it.
|Animation vs. Small Multiples|
|Interaction for Word-Scale Visualizations|
|Collaborative Information Visualization|
|Perception of visual variables on tiled wall displays|
|Stackables Tangibles for faceted search||CoCoNutTrix|
A study on retrofitting for collaborative information visualization
Collaborative Visual Analytics in document collections
Collaborative analysis of hierarchical data
Overview and Errata of my PhD Thesis
|Coupling styles in collaborative work||Design Considerations|
for co-located collaborative visualization
|A study of data analysis processes in collaborative work||iLoupe and iPodLoupe for interacting with visualization on a touch display||Lark|
Coordinating multiple views for collaboration
|Information Visualization Techniques|
|Hybrid Image Vis|
using hybrid images for visualization and communication
phyllotactic patterns for tree layout
relations in hierarchical data
personalizing typed text through visualization
visualization for multimedia databases
a comparative study of several dual-scale charts
a study on how to best draw directed edges in graphs
|Interaction Techniques for Visualization|
|MultitouchSelection how to support multi-touch multi-object selection|
|VisKeywords understanding visualization through keyword analysis|
Lenses for illustration.
|A study of NPR line illustration (external link)||Interactive text illustration|
|Miscellaneous and Fun Projects|
|A simple force-directed layout to show my co-authorship network||A video coding tool for qualitative data analysis||Convenience tool for getting color code for OpenGL programming||Applet for calculating the visual angle of an object based on viewing distance.||How I built a multi-touch pad from scratch|
Here is a brief history of how I ended up with the types of projects you see above:
I started research in the area of computer graphics and in particular non-photorealistic rendering (NPR) - a very hot topic at the University of Magdeburg where I studied from 1999-2004. Towards the end of my studies there I got more and more involved in information visualization. First, I worked as a research assistant on applications for visualization of database content & queries and finished my studies in Magdeburg with work on hierarchical data visualization. After my Diplom, I went to the University of Calgary and focused my research more on collaborative information visualization. I also work(ed) on a few projects in other areas such as the evaluation of information visualizations, social data analysis, and the visualization of hierarchical data. Then I focused for a bit on wall-sized display visualization and these days I am interested in the opposite - very small, micro, visualizations.