Master Thesis MSTR-2016-90

BibliographyWolf, Johannes: Investigating the characteristics of unistroke gestures using a mobile game.
University of Stuttgart, Faculty of Computer Science, Electrical Engineering, and Information Technology, Master Thesis No. 90 (2016).
93 pages, english.

Touch gestures are todayís main input method for the interaction with smart phones. In particular, unistroke gestures, which are gestures consisting of one articulated line, are commonly used for text input (touch keyboards) and short cuts referring to functions on mobile devices. This work investigates the userís accuracy of articulating unistroke touch gestures on mobile devices. Therefore, two studies were conducted which focused on the userís ability to perceive different variations of unistroke gestures and reproduce them accurately. First, a control study aimed at analyzing the userís touch accuracy during the articulation of single line and composed line gestures by varying gesture properties like the rotation or angles within the gestures. To analyze the infl uences of the userís distraction in his natural environment, a large scale study was conducted which used a mobile game as apparatus. The game was designed in a way that the user was motivated to articulate the given gestures precisely. The game principle was based on the control study procedure of perceiving and reproducing gestures. To gather a great amount of touch samples the game was published on a mobile app store and the samples were collected trough the internet. The analysis of both studies showed that the gestures orientation and the angles within the gestures affected the articulation accuracy in terms of the deviations made by bending, rotating, and varying the shape of the gestures. Furthermore, the gestures articulated in the game study tended to be more error-prone compared to those being articulated in the control study.

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Department(s)University of Stuttgart, Institute of Visualisation and Interactive Systems, Visualisation and Interactive Systems
Superviser(s)Henze, Jun.-Prof. Niels; Mayer, Sven; Weber, Dominik; Schwind, Valentin
Entry dateJune 19, 2019
   Publ. Computer Science