TZee: a tangible device for 3d interactions on tabletop computers

• Main Author: Williams, Cary
• Other Authors: Irani, Pourang (Computer Science)
• Published: Association for Computing Machinery 2012
• Subjects: 3d; multitouch; tui
• Online Access: Cary Williams, Xing Dong Yang, Grant Partridge, Joshua Millar-Usiskin, Arkady Major, and Pourang Irani. 2011. TZee: exploiting the lighting properties of multi-touch tabletops for tangible 3d interactions. In Proceedings of the 2011 annual conference on Human factors in computing systems (CHI '11). ACM, New York, NY, USA, 1363-1372. DOI=10.1145/1978942.1979143 http://doi.acm.org/10.1145/1978942.1979143; http://hdl.handle.net/1993/5219

Manipulating 3D objects on a tabletop computer is inherently problematic. The flat surface of tabletop computers enable natural 2D interaction, but lack the additional dimension needed to intuitively facilitate 3D object manipulation. In this thesis I present TZee, a passive tangible widget that enables natural interactions with 3D objects by exploiting the lighting properties of diffuse illumination (DI) multi-touch tabletops. The Tangible User Interface (TUI), TZee is constructed from several pieces of stacked acrylic glass. The stacked glass enables TZee to channel the light emitted from the tabletop slightly higher above the surface without major light loss. This technique allows the tangible interface to transmit touches on the device to the tabletop without any supplementary power. TZee enables simple translation, rotation and scaling along the x, y, or z axes. This thesis discusses several important design considerations of TZee, demonstrated TZee’s value though several applications and a gesture design study.