Dr. Leonhard Lichtschlag

Alumnus

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Leonhard completed his PhD on zoomable user interfaces at the Media Computing Group under the supervision of Prof. Dr. Jan Borchers in 2015. To find out what he did next, check out our alumni page.

I was with the group until July 2015 and can be reached at This email address is being protected from spambots. You need JavaScript enabled to view it., at Github, or via my homepage.

Teaching

• SS13: Post-Desktop User Interfaces
• WS12/13: iPhone Programming
• WS12/13: Proseminar: Mensch-Maschine-Interaktion
• SS12: Designing Interactive Systems 2
• WS11/12: iPhone Programming
• SS11: Current Topics of HCI
• WS10/11: Post-Desktop User Interfaces
• SS10: Current Topics of HCI
• WS09/10: Post-Desktop User Interfaces
• WS09/10: Designing Interactive Systems
• SS09: Current Topics of HCI

Student Theses

• Amin Yazdi (2015)
• Philipp Wacker (2014): How Does It Feel? — Presenter Experience and Evaluation While Using Canvas Presentation Tools
• Lisa Krause (2014): Modular erstellte grafische Mensch-Maschine-Schnittstelle für den vernetzten Operationssaal
• Torben Schulz (2014): Sketchassisted Development
• Alexandra Linden (2013): Learning Analytics for Action Research
• Lukas Spychalski (2013): Sketchmaster
• Ardi Tjandra (2013): Code Mixer
• Claude Bemtgen (2011): Fly Mobile
• Hendrik Röllinger (2010)
• Manuel Kallenbach (2010): HelpMeOut
• Thomas Hess (2010): Fly 3.0
• Christopher Kurtz (2009): Code Gestalt
• Christian Corsten (2009): DragonFly

I am currently not in a position to advise further student theses.

Projects

• Height Displays
• New Interaction Techniques for Source Code Editing
• ExamPen
• Fly - Planar Presentations, my Diploma Thesis and ongoing research project
• Personal Orchestra, a series of exhibits that let you conduct an orchestra
• Route Charlemagne
• DuC Pavillon at the Expo2010 in Shanghai

Code

• Most of it is on Github
• iCloudPlayground, a testbed for the iCloud APIs in iOS 5 with sample code shows how to setup iCloud Syncing for key-value pairs and documents in the cloud.
• Dazzle, a demo for the particle effect APIs in iOS 5.
• Code Snippets: Some helpful code snippets for Xcode 4/5. Put the contents of the archive into ~/Library/Developer/Xcode/UserData/CodeSnippets/, restart Xcode.
• Dynamically loadable (and unloadable) PlugIns in Xcode, useful for prototyping without restarting the host program

Publications

2016

• Mohammed Amin Yazdi, André Calero-Valdez, Leonhard Lichtschlag, Martina Ziefle and Jan Borchers. Visualizing Opportunities of Collaboration in Large Research Organizations.  In International Conference on HCI in Business, Government and Organizations, pages 350–361,July 2016.
  

2015

• Leonhard Lichtschlag. Zoomable User Interfaces: Communicating on a Canvas. PhD Thesis, RWTH Aachen University, Aachen, November 2015.
  
• Leonhard Lichtschlag, Philipp Wacker, Martina Ziefle and Jan Borchers. The Presenter Experience of Canvas Presentations.  In INTERACT 2015: Proceedings of the 15th IFIP TC.13 International Conference on Human-Computer Interaction, pages 289–297,September 2015.
  

2014

• Leonhard Lichtschlag, Lukas Spychalski and Jan Borchers. CodeGraffiti: Using Hand-drawn Sketches Connected to Code Bases in Navigation Tasks.  In VL/HCC 2014: Proceedings of the IEEE Symposium on Visual Languages and Human-Centric Computing, pages 65–68,July 2014.
  

2012

• Leonhard Lichtschlag, Thomas Hess, Thorsten Karrer and Jan Borchers. Fly: Studying Recall, Macrostructure Understanding, and User Experience of Canvas Presentations.  In CHI '12: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, pages 1307–1310,May 2012.
  
• Leonhard Lichtschlag, Thomas Hess, Thorsten Karrer and Jan Borchers. Canvas Presentations in the Wild.  In CHI EA 2012: Proceedings of the 2012 ACM annual conference extended abstracts on Human Factors in Computing Systems Extended Abstracts, pages 537–540,May 2012.
  

2011

• Thorsten Karrer, Moritz Wittenhagen, Leonhard Lichtschlag, Florian Heller and Jan Borchers. Pinstripe: Eyes-free Continuous Input on Interactive Clothing.  In CHI '11: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, pages 1313–1322, ACM Press, Vancouver, Canada, May 2011.
  
• Florian Heller, Leonhard Lichtschlag, Moritz Wittenhagen, Thorsten Karrer and Jan Borchers. Me Hates This: Exploring Different Levels of User Feedback for (Usability) Bug Reporting.  In CHI '11: Extended Abstracts of the CHI 2011 Conference on Human Factors in Computing Systems, pages 1357–1362,2011.
  

2010

• Leonhard Lichtschlag and Jan Borchers. CodeGraffiti: Communication by Sketching for Pair Programming.  In UIST 2010: Adjunct proceedings of the 23nd annual ACM symposium on User interface software and technology, pages 439–440,New York, NY, October 2010.
  
• Thorsten Karrer, Moritz Wittenhagen, Leonhard Lichtschlag and Jan Borchers. ExamPen: How digital pen technology can support teachers and examiners.  In CHI '10: Workshop on Next Generation of HCI and Education, Misc, Atlanta, USA, April 2010.
  

2009

• Leonhard Lichtschlag, Thorsten Karrer and Jan Borchers. Fly: a Tool to Author Planar Presentations.  In CHI 2009: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, pages 547–556, ACM Press, Boston, MA, USA, April 2009.
  

2008

• Leonhard Lichtschlag. Fly: An organic authoring tool for presentations. Diploma Thesis, RWTH Aachen University, Aachen, November 2008.