Papers by Bjoern Hartmann


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Proton: Multitouch Gestures as Regular Expressions

Kenrick Kin, Bjoern Hartmann, Tony DeRose, Maneesh Agrawala
January 2012

Current multitouch frameworks require application developers to write recognition code for custom gestures; this code is split across multiple event-handling callbacks. As the number of custom gestures grows it becomes increasingly difficult to 1) know if new gestures will conflict with existing gestures, and 2) know how to extend existing ... more

Paper (PDF)

To appear in CHI 2012

Available as Pixar Technical Memo #12-02


Eden: A Professional Multitouch Tool for Constructing Virtual Organic Environments

Kenrick Kin, Tom Miller, Bjoern Bollensdorff, Tony DeRose, Bjoern Hartmann, Maneesh Agrawala
January 2011

Set construction is the process of selecting and positioning virtual geometric objects to create a virtual environment used in a computer-animated film. Set construction artists often have a clear mental image of the set composition, but find it tedious to build their intended sets with current mouse and keyboard interfaces. We investigate whether multitouch input can ... more

Paper (PDF)

To appear in the proceedings of SIGCHI 2011

Available as Pixar Technical Memo #11-04