Balloon Selection revisited - Multi-touch Selection Techniques for Stereoscopic Data

With the increasing distribution of multi-touch capable devices multi-touch interaction becomes more and more ubiquitous. Especially the interaction with complex data (e.g. medical or geographical data), which until today mostly rely on mice and keyboard input or intense instrumentation, can benefit from this development. Multi-touch interaction offers new ways to deal with 3D data allowing a high degree of freedom (DOF) without instrumenting the user. This paper evaluates indirect multi-touch 3D selection techniques that can be used to interact with stereoscopic data. In this paper two gestural multi-touch selection techniques are presented and investigated with respect to positions on a stereoscopic multi-touch display and special consideration of objects displayed with different parallaxes. In an experiment it was shown that position and parallax have a significant impact on the interaction.