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TU Berlin

Inhalt des Dokuments

Lupe

Sven Kratz is now with Ludwig-Maximilians-Universität München

Research Field


Human-Computer-Interaction (HCI)

Research Topics


- Novel sensor-based mobile interactions
- Mobile navigation of large information spaces
- Motion gesture recognition
- Physical and tangible user interfaces

Biography


Sven Kratz is a research assistant with Deutsche Telekom Laboratories at TU Berlin, where he is also currently pursuing his Phd studies. His primary research focus is on sensor-based mobile interfaces that allow for novel types of interaction. This includes gesture recognition, interaction based on distance sensing and pressure, tabletop applications for mobile devices and optical tracking technologies. Sven also conducts research into mobile interfaces providing efficient navigation of large information spaces such as maps, 3D environments or databases.

Sven received his Diplom degree in Computer Science from RWTH-Aachen University in 2008. In 2007, while working at the Media Computing Group at RWTH Aachen, Sven participated in the development, deployment and the user interface design of the mobile pervasive city game REXplorer, the first mobile city game released in public.

During his free time, Sven enjoys sailing, playing tennis and traveling the world.

Address


Quality and Usability Lab
Deutsche Telekom Laboratories
TU Berlin
Errnst-Reuter-Platz 7
D-10587 Berlin, Germany

Publications

2013

Wolf, K., Schleicher, R., Kratz, S. and Rohs, M. (2013). Tickle: A Surface-independent Interaction Technique for Grasp Interfaces. Proc. TEI 2013, 8.


2012

Kratz, S., Rohs, M., Guse, D., Müller, J., Bailly, G. and Nischt, M. (2012). PalmSpace: continuous around-device gestures vs. multitouch for 3D rotation tasks on mobile devices. Proceedings of the International Working Conference on Advanced Visual Interfaces. ACM, 181–188.


Bailly, G., Müller, J., Rohs, M., Wigdor, D. and Kratz, S. (2012). ShoeSense: a new perspective on gestural interaction and wearable applications. Proceedings of the SIGCHI Conference on Human Factors in Computing Systems. ACM, 1239–1248.


Bailly, G., Müller, J., Rohs, M., Wigdor, D. and Kratz, S. (2012). ShoeSense: a new perspective on gestural interaction and wearable applications. Proceedings of the 2012 ACM annual conference on Human Factors in Computing Systems. ACM, 1239–1248.


2011

Kirschnick, N., Kratz, S. and Möller, S. (2011). Poster: Usability of Gesture-based Authentication. 2011 Symposium On Usable Privacy and Security (SOUPS 2011)


Kühnel, C., Westermann, T., Hemmert, F., Kratz, S. and Möller, S. (2011). I'm Home: Defining and Evaluating a Gesture Set for Smart-Home Control. International Journal of Human-Computer Studies, 693–704.

Link zur Originalpublikation

Kratz, S., Westermann, T., Rohs, M. and Essl, G. (2011). CapWidgets: Tangible Widgets versus Multi-Touch Controls on Mobile Devices. Work in Progress, CHI 2011, Vancouver, Canada, May 7-12, 2011


Kratz, S. and Rohs, M. (2011). Protractor3D: A Closed-Form Solution to Rotation-Invariant 3D Gestures. Proceedings of the 2011 International Conference on Intelligent User Interfaces (IUI 2011). ACM Press.

Link zur Originalpublikation

Kratz, S., Rohs, M., Wolf, K. and Müller, J. (2011). Body, movement, gesture & tactility in interaction with mobile devices. Proc. Mobile HCI 2011, 757–759.

Link zur Originalpublikation

Guse, D., Kirschnick, N., Kratz, S. and Möller, S. (2011). Gesture-based User Authentication for Mobile Devices. Proc. MobileHCI 2011, Workshop on Body, Movement, Gesture & Tactility in Interaction with Mobile Devices


2010

Kühnel, C., Westermann, T., Weiss, B., Kratz, S. and Möller, S. (2010). Evaluating Multimodal Systems - A Comparison of Established Questionnaires and Interaction Parameters. Proc. NordiCHI 2010


Kratz, S., Brodien, I. and Rohs, M. (2010). Semi-Automatic Zooming for Mobile Map Navigation. Proceedings of the 11th International Conference on Human Computer Interaction with Mobile Devices and Services (MobileHCI 2010). ACM Press, 63–72.


Bähr, B., Rohs, M. and Kratz, S. (2010). A Tabletop System for supporting Paper Prototyping of Mobile Interfaces. PaperComp 2010: 1st International Workshop on Paper Computing. Workshop at Ubicomp 2010. ACM.


Rohs, M., Kratz, S., Schleicher, R., Sahami, A. and Schmidt, A. (2010). WorldCupinion: Experiences with an Android App for Real-Time Opinion Sharing during World Cup Soccer Games. PaperComp 2010: 1st International Workshop on Paper Computing. Workshop at Ubicomp 2010. ACM.


Kirschnick, N., Kratz, S. and Möller, S. (2010). An Improved Approach to Gesture-Based Authentication for Mobile Devices. SOUPS '10 Symposium on Usable Privacy and Security. ACM.


Essl, G., Rohs, M. and Kratz, S. (2010). Use the Force (or something) - Pressure and Pressure-Like Input for Mobile Music Performance. Proceedings of the International Conference on New Interfaces for Musical Expression (NIME 2010).


Kratz, S., Hemmert, F. and Rohs, M. (2010). Natural User Interfaces in Mobile Phone Interaction. Workshop on Natural User Interfaces at CHI 2010


Stewart, C., Rohs, M., Essl, G. and Kratz, S. (2010). Characteristics of Pressure-Based Input for Mobile Devices. Proceedings of the 28th international conference on Human factors in computing systems.


Kratz, S. and Rohs, M. (2010). Extending the Virtual Trackball Metaphor to Rear Touch Input. IEEE Symposium on 3D User Interfaces 2010.


Kratz, S. and Rohs, M. (2010). A 3$ gesture recognizer: simple gesture recognition for devices equipped with 3D acceleration sensors. Proceedings of the 14th international conference on Intelligent user interfaces.


2009

Essl, G., Rohs, M. and Kratz, S. (2009). Squeezing the Sandwich: A Mobile Pressure-Sensitive Two-Sided Multi-Touch Prototype. 22nd Annual ACM Symposium on User Interface Software and Technology (UIST). Association for Computing Machinery (ACM Press), 845–847.


Kray, C., Rohs, M., Hook, J. and Kratz, S. (2009). Bridging the Gap between the Kodak and the Flickr Generations: A Novel Interaction Technique for Collocated Photo Sharing. International Journal on Human-Computer Studies (IJHCS)


Kratz, S. and Ballagas, R. (2009). Unravelling seams: improving mobile gesture recognition with visual feedback techniques. Proceedings of the 27th international conference on Human factors in computing systems CHI. ACM, 937–940.



Kratz, S. and Rohs, M. (2009). Hoverflow: exploring around-device interaction with IR distance sensors. Proceedings of the 11th International Conference on Human-Computer Interaction with Mobile Devices and Services (MobileHCI '09). ACM, 1–4.


Schöning, J., Rohs, M., Kratz, S., Löchtefeld, M. and Krüger, A. (2009). Map torchlight: a mobile augmented reality camera projector unit. Proceedings of the 27th international conference extended abstracts on Human factors in computing systems(CHI EA '09). ACM, 3841–3846.


2008

Kray, C., Rohs, M., Hook, J. and Kratz, S. (2008). Group Coordination and Negotiation through Spatial Proximity Regions around Mobile Devices on Augmented Tabletops. 3rd IEEE International Workshop on Tabletops and Interactive Surfaces (IEEE Tabletop 2008), 3–10.


Kratz, S. and Rohs, M. (2008). Navigating Dynamically-Generated High Quality Maps on Tilt-Sensing Mobile Devices. Workshop on Mobile and Embedded Interactive Systems (MEIS at Informatik 2008). GI, 1–8.


2007

Kratz, S. and Ballagas, R. (2007). Gesture Recognition Using Motion Estimation on Mobile Phones. PERMID '07. 3rd Intl. Workshop on Pervasive Mobile Interaction Devices at Pervasive 2007.

Link zur Originalpublikation

Ballagas, R., Kratz, S., Borchers, J., Yu, E., Walz, S., Fuhr, C., Hovestadt, L. and Tann, M. (2007). REXplorer: a mobile, pervasive spell-casting game for tourists. In CHI '07: Chi extended abstracts on Human Factors in Computing Systems


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