Prof. Dr. Jürgen Döllner
Jan Klimke


Dr. Jan Klimke

Tel.: +49-(0)331 5509-3904
Fax: +49-(0)331 5509-172
Room: H-2.25
Email: jan.klimke@hpi.de


Research Interests

  • Visual Software Analytics
  • Service-based 3D Visualization
  • Geovisualization
  • Sensor Data Visualization and Analytics
  • Urban Analytics




Server-Based Rendering of Large 3D Scenes for Mobile Devices Using G-Buffer Cube Maps

Döllner, Jürgen; Hagedorn, Benjamin; Klimke, Jan in Web3D '12 Proceedings of the 17th International Conference on 3D Web Technology page 97-100 . 2012 .

Large virtual 3D scenes play a major role in growing number of applications, systems, and technologies to effectively communicate complex spatial information. Their web-based provision, in particular on mobile devices, represents a key challenge for system and application development. In contrast to approaches based on streaming 3D scene data to clients, our approach splits 3D rendering into two processes: A server process is responsible for realtime rendering of virtual panoramas, represented by G-buffer cube maps, for a requested camera setting. The client reconstruction process uses these cube maps to reconstruct the 3D scene and allows users to operate on and interact with that representation. The key properties of this approach include that (a) the complexity of transmitted data not depend on the 3D scene’s complexity, (b) 3D rendering can take place within a controlled and a-priori known server environment, (c) crucial 3D model data never leaves the server environment, and (d) the clients can flexibly extend the 3D cube map viewer by adding both local 3D models and specialized 3D operations.
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Winter Term 2009/2010

Summer Term 2010

  • Lecture assistance "Programming of 3D-Applications"
  • Tutor seminar "Information- and Geovisualization"
  • Tutorial course "Introduction to C++"

Winter Term 2010 / 2011

  • Tutor seminar Gameprogramming

Sommersemester 2011

  • Bachelor project "Service-based 3D Geovisualization on mobile Devices"

Wintersemester 2011 / 2012:

  • Tutor seminar Gameprogramming

Summer Term 2012

  • Bachelor project "Mobile 3D Apps"

Summer Term 2013

  • Bachelor Project "Service-based information rich 3D City Models"

Winter Term 2015/2016

  • Seminar tutor "Spatial Data / Spatio Temporal Data" 

Summer Term 2016

  • Seminar tutor "Introduction to Visual Analytics"
  • Master Project "Sensor Data Analytics"

Master's Theses

  • "An Approach for automatic Selection of Best Views for virtual 3D City Models", Marit Möller, 2013
  • "Service-based Generation of Video Sequences for virtual 3D City Models", Marika Marszalkowski, 2014
  • "Level of Detail Techniques for Service-based Rendering of 3D City Models", Marcel Pursche, 2015
  • "A System for Streaming-based Visualization of Massive Virtual 3D City Models based on WebGL",Simon Völcker, 2015
  • "A Framework for Thematic Visualization in Service-Based Virtual 3D City Models", Roman Preuss

Further Activities

  • Member of SIG3D, Standardization of CityGML within OGC CityGML