Visualization and Graphics > Interaction > Dept ICS > Faculty of Science > UU

I hold an appointment as full professor in Visual Data Analytics at the Department of Information and Computing Sciences, Utrecht University. Before this, I worked as full professor of Multiscale Visual Analytics in the (SVCG) group at the Bernoulli Institute, Faculty of Science and Engineering, University of Groningen.

Research focus

  • information visualization and visual analytics (techniques, system design)
  • big data multiscale visualization (large hierarchies, graphs, trail sets)
  • visualization for AI (dimensionality reduction, explaining machine learning)
  • shape/image processing (skeletonization, segmentation, fairing, reconstruction)
  • interactive systems design (interaction and animation for data exploration)
  • scientific visualization (GPU-based and PDE-based visualization techniques)
  • program analysis (reverse engineering, software evolution, fact extraction and querying)

Google Scholar profile

The Book: Data Visualization - Principles and Practice

My book (2nd edition published by CRC Press) gives a practical introduction to data visualization. It targets (under)graduate students and professionals interested in designing and implementing visualization applications to explore big data. Topics covered: scalar, vector, tensor, image, volume, and information visualization.

New in the 2nd edition: C/C++ code samples, exam questions, projects, datasets, and ParaView scenarios.

First edition: 2008. Second edition: 2014. Chinese edition: 2018. Over 5000 copies sold (2018).


Here are the main courses I deliver or have delivered. Links to courses here.

  • Visual analytics for big data
  • Scientific visualization
  • Multimedia retrieval
  • Software maintenance and evolution
  • Computer graphics
  • Software quality assurance and testing

PhD Students

I am supervising (have supervised) around 30 PhD students as thesis director. More information and links to theses here.

MSc Students

I have supervised 80+ MSc students as main director. Selected theses here.

PhD Research

My PhD research (2000) was on the design and implementation of VISSION, an application building environment for VIsualization and SImulation with Object-oriented Networks. VISSION offers object-oriented tools for scientific visualization and real-time interaction with running simulations, is easily extendable with user code, and creates visual programming tools and GUIs automatically from object-oriented code. VISSION proved (relevant at the time) that all one can achieve in Java can also be done in C++, only better, cleaner, and easier.

Research valorization

My work led to a successful (>2M EUR turnover) start-up company (SolidSource BV) specialized in tools and services for the visual analysis of big data for industry-scale software maintenance.