Research Projects
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.
| Mobile Visualization | ||||
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| Animation vs. Small Multiples | ||||
| Micro Visualization | ||||
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| Interaction for Word-Scale Visualizations | ||||
| Collaborative Information Visualization | ||||
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| Perception of visual variables on tiled wall displays | ||||
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| Stackables Tangibles for faceted search | CoCoNutTrix A study on retrofitting for collaborative information visualization | Cambiera Collaborative Visual Analytics in document collections | CoTree Collaborative analysis of hierarchical data | PhD Thesis Overview and Errata of my PhD Thesis |
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| 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 | |||||
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| Hybrid Image Vis using hybrid images for visualization and communication | PhylloTrees phyllotactic patterns for tree layout | ArcTrees relations in hierarchical data | KeyStrokes personalizing typed text through visualization | IVI visualization for multimedia databases | |
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| DualScaleCharts a comparative study of several dual-scale charts | GraphEdges a study on how to best draw directed edges in graphs | ||||
| Interaction Techniques for Visualization | ||||
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| MultitouchSelection how to support multi-touch multi-object selection | ||||
| Visualization General | ||||
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| VisKeywords understanding visualization through keyword analysis | ||||
| Non-photorealistic Rendering | ||||
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| NPRLenses Lenses for illustration. | A study of NPR line illustration (external link) | Interactive text illustration | ||
| Miscellaneous and Fun Projects | ||||
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| 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 |
Research Path
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.