P. Maier, M. Tönnis, G. Klinker Poster: Designing and Comparing Two-Handed Gestures to Confirm Links between User Controlled Objects 9th IEEE International Symposium on Mixed and Augmented Reality (ISMAR), Seoul, Korea, Oct. 13-16, 2010, pp. 251-252. (bib)
	Systems using two-handed spatial manipulation techniques also require strategies to enable system control tasks. These strategies make it possible to interact with the system comfortably while controlling two hand-held objects simultaneously. The Augmented Chemical Reactions project makes intense use of such two-handed interaction tasks. Users control virtual molecules and subsets that are registered to physical markers and try to combine those by selecting and then confirming a specific bond. When a desired bond has been selected, the user needs a way to confirm that bond without letting an atom go out of position. We developed and investigated two separate methods of confirming a selected bond when both hands are already doing a two-handed symmetric interaction task. The first method is a waiting method and the second method is a back&forth motion gesture. We evaluated the two methods in a user study, showing that the first technique, holding still, outperforms the other technique.
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