Christian Holz
  • PhD student, working with Patrick Baudisch since 2009,
  • Hasso Plattner Institute (HPI), University of Potsdam, Germany.

Ultra-mobile devices that support spatial interaction

My research is based on the observation that the miniaturization of mobile devices has come to a halt, because input controls have to be large enough to be operated. However, this halt is not due to hardware limitations. I believe that further miniaturization and thus true ubiquity of mobile devices requires a better understanding of human factors. In my research, I investigate and leverage human mental models to create ultra-small touch devices. I also build systems that allow users to interact spatially in the empty space in front of them, the ground they stand on, and on their skin. My tools include the combination of software and hardware, prototyping, and depth cameras.

Internships and Visits

Professional activities

  • 2013 Augmented Human Program Co-Chair
  • 2013 MobileHCI Associate Chair
  • 2013 CHI Works in Progress Co-Chair
  • 2012 UIST Demo Co-Chair
  • 2012 CHI Associate Chair (Interaction Techniques and Devices)
  • 2011 UIST Demo Co-Chair

Publications

  1. Braenzel, A., Holz, C., Hoffmann, D., Schmidt, D., Knaust, M., Luehne, P., Meusel, R., Richter, S., Baudisch, P. GravitySpace: Tracking Users and Their Poses in a Smart Room Using a Pressure-Sensing Floor. In Proceedings of CHI '13, 725–734.
    GravitySpace project
  2. Holz, C., Grossman, T., Fitzmaurice, G. and Agur, A. Implanted User Interfaces. In Proceedings of CHI '12, 503–512.
    Implanted User Interfaces project
  3. Richter, S., Holz, C. and Baudisch, P. Bootstrapper: Recognizing Tabletop Users by their Shoes. In Proceedings of CHI '12, 1249–1252 (short paper).
    Bootstrapper project
  4. Gustafson, S., Holz, C. and Baudisch, P. Imaginary Phone: Learning Imaginary Interfaces by Transferring Spatial Memory from a Familiar Device. In Proceedings of UIST '11, 283–292.
    Imaginary Phone project
  5. Holz, C. and Wilson, A.D. Data Miming: Inferring Spatial Object Descriptions from Human Gesture. In Proceedings of CHI '11, 811–820.
    Data Miming project
  6. Holz, C. and Baudisch, P. Understanding Touch. In Proceedings of CHI '11, 2501–2510.
    Understanding Touch project
  7. Augsten, T., Kaefer, K., Meusel, R., Fetzer, C., Kanitz, D., Stoff., T., Becker, T., Holz, C. and Baudisch, P. Multitoe: High-Precision Interaction with Back-Projected Floors Based on High-Resolution Multi-Touch Input. In Proceedings of UIST '10, 209–218.
    Multitoe project
  8. Holz, C. and Baudisch, P. The Generalized Perceived Input Point Model and How to Double Touch Accuracy by Extracting Fingerprints. In Proceedings of CHI '10, 581–590.
    The Generalized Perceived Input Point Model project
  9. Holz, C. and Feiner, S. Relaxed Selection Techniques for Querying Time-Series Graphs. In Proceedings of UIST '09, 213–222.
    Relaxed Selection Techniques project

Utilities

Contact