Prof. Dr. Jürgen Döllner

Willy Scheibel

Willy Scheibel

Research assistent for software analytics.

Research topics:

  • Visualizing changing hierarchies
  • Hardware-accelerated systems design

Other interests:

  • Computer Graphics
  • Game Design


Tel.: +49-(0)331 5509-3914
Fax: +49-(0)331 5509-172
Room: H-2.21
Email: willy.scheibel(at)hpi.de



Teaching activities

Summer Term 2017

  • Lecture "Advanced Programming Techniques for C++" (tutor)
  • Seminar "Advanced Information Visualization" (tutor)

Winter Term 2016/1017

  • Lecture "Advanced Programming in C++" (tutor)
  • Seminar "Methods and Techniques of Information Visualization" (supervisor)
  • Masters Project "Real-time Monitoring of Massive File Systems" (supervisor)

Summer term 2016

  • Lecture "Computer Graphics II" (tutor)
  • Seminar "Methods and Techniques of Software Visualization" (tutor)
  • Bachelor project "Massive Information Mining for Software Analytics" (supervisor)

Winter term 2015/2016

  • Lecture "Computer Graphics I" (tutor)
  • Seminar "Systems Engineering for Software Analytics" (tutor)
  • Bachelor project "Massive Information Mining for Software Analytics" (supervisor)

Summer term 2015

  • Lecture "Computer Graphics I" (tutor)
  • Seminar "Visual Software Analytics" (tutor)
  • Seminar "Programmierung computergrafischer Verfahren mit C++ und OpenGL" (tutor & co-lecturer)
  • Bachelor project "Software Analytics" (supervisor)

Winter term 2014/2015

  • Lecture "Computer Graphics II" (tutor)
  • Seminar "Visualization for Interactive Software Analytics" (tutor)
  • OpenHPI course "Automated Visual Software Analytics" (tutor)
  • Bachelor project "Software Analytics" (supervisor)

Summer term 2014

  • Seminar "Grafikprogrammierung mit OpenGL und C++" (co-lecturer)
  • Seminar "Information Visualization" (co-tutor)

Winter term 2013/2014

  • Seminar "Software-Analyse und Visualisierung" (co-tutor)


Dynamic 2.5D Treemaps using Declarative 3D on the Web

Limberger, Daniel; Scheibel, Willy; Lemme, Stefan; Jürgen, Döllner in Proceedings of the 21st International Conference on Web3D Technology page 33--36 . 2016 .

The 2.5D treemap represents a general purpose visualization technique to map multi-variate hierarchical data in a scalable, interactive, and consistent way used in a number of application fields. In this paper, we explore the capabilities of Declarative 3D for the web-based implementation of 2.5D treemap clients. Particularly, we investigate how X3DOM and XML3D can be used to implement clients with equivalent features that interactively display 2.5D treemaps with dynamic mapping of attributes. We also show a first step towards a glTF-based implementation. These approaches are benchmarked focusing on their interaction capabilities with respect to rendering and speed of dynamic data mapping. We discuss the results for our representative example of a complex 3D interactive visualization technique and summerize recommendations for improvements towards operational web clients.
Further Information
Tags 2.5D_treemap Dec3D X3DOM XML3D cgs glTF