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Paper on 3D indirect touch accepted at 3DUI 2015

Our paper titled “Comparing Indirect and Direct Touch in a Stereoscopic Interaction Task” has been accepted for inclusion in the 3DUI 2015 program.Task3

In this work we investigated the effect that occluding the screen has on direct touch 3D interaction techniques. Indeed, interacting with 3D content on a multi-touch screen causes the user to occlude with their arms or hands large parts of the display. We designed a 3D interaction task in which users had to move a biplane in a 3D environment while avoiding collisions with the gold spheres, which counted as errors. In one condition, participants interacted on a 3D multi-touch screen, in the other, we adapted the interaction technique for a tablet device. Results of our user-study showed that in the indirect condition (with the tablet) participants performed 30% less erros.

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A.L. Simeone and H. Gellersen.
Comparing Direct and Indirect Touch in a Stereoscopic Interaction Task
In Proceedings of 3D User Interfaces 2015 (3DUI 2015). IEEE, pp. 105-108.

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In this paper we studied the impact that the directedness of touch interaction has on a path following task performed on a stereoscopic display. The richness of direct touch interaction comes with the potential risk of occluding parts of the display area, in order to express one's interaction intent. In scenarios where attention to detail is of critical importance, such as browsing a 3D dataset or navigating a 3D environment, important details might be missed. We designed a user study in which participants were asked to move an object within a 3D environment while avoiding a set of static distractor objects. Participants used an indirect touch interaction technique on a tablet and a direct touch technique on the screen. Results of the study show that in the indirect touch condition, participants made 30\% less collisions with the distractor objects.
@inproceedings{Simeone2015Occlusion,
author={Simeone, Adalberto L. and Gellersen, Hans},
booktitle={3D User Interfaces 2015},
series = {3DUI 2015},
title={Comparing Direct and Indirect Touch in a Stereoscopic Interaction Task},
year={2015},
month={March},
}

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