Department of Informatics and Telecommunications
Πληροφορική

2020-10-30

2020

LOUKIS THEODOROS

Γεώργιος Κουρουπέτρογλου, Καθηγητής, Τμήμα Πληροφορικής και Τηλεπικοινωνιών, ΕΚΠΑ

Συγκριτική Αξιολόγηση λειτουργίας αναμονής ή χειρονομίας με ποντίκι ως Εναλλακτικών Τρόπων Επιλογής Στόχου σε οθόνη Η/Υ

Greek

Evaluation of hover or gesture mode with mouse as Alternative target selection methods on a computer screen

In order to evaluate ergonomics, usability and accessibility of a novel Human – Computer interaction device, in depth evaluation is mandatory. In the present thesis statement, we evaluate for the first time, three alternative modes of selecting targets on the monitor of a personal computer with a target group of undergraduate and postgraduate students of the Department of Informatics and Telecommunications (DIT) of the University of Athens (UoA). The evaluation of effectiveness of the alternative target selection method was conducted using the Input Device Evaluation Application (IDEA) software, which takes mouse pointer trajectory measurements during the use of any point and click device that simulates the functions of an ordinary mouse. By conducting two experiments, a one dimensional (1D) and a two dimensional (2D), we compare the typical left click target selection mode with the novel, under test click assistive software called Click Gestures Assistant (CGA). Our goal is to extract the first data (baseline) that show whether the performance of the novel modes of target selection the CGA provides, i.e., via hover and via gesture, can be compared with the performance of an ordinary mouse click. We present the conduction of a series of experiments that took place in the Electronics Lab of the DIT of UoA, under the supervision of Professor Georgios Kouroupetroglou and Dr Alexandros Pino from the Speech and Accessibility Laboratory of UoA and we analyze the scientific results. Ninety undergraduate and postgraduate students of our Department, with an age range of eighteen to thirty-six )18-36) years old, participated in the experiments. Students who took part in the experiments performed several tasks of pointing and selecting targets with different difficulty indexes, in 1D and 2D, using an ordinary mouse for pointing, and for target selection: a) the left button of the mouse, b) CGA in hover mode and b) CGA in gesture mode. The collected experiment data were preliminarily processed with the IDEA software, which exports the main metrics, and were subsequently statistically analyzed and visualized using Microsoft Excel tools. Results have shown that target selection using the typical mouse click is faster and more effective than the two alternative ways at both 1D and 2D experiments. Furthermore, target selection in hover mode is faster and more effective than in gesture mode. Additionally, we examined how our measurements conform to Fitts’ Law and we showed that all modes comply. Results gave a baseline of the comparison between selecting a target using mouse click versus selecting a target using hover or gesture for subjects who are familiar with the mouse. Our experiments ease the way for more comparison experiments between modes of selecting a target and the future evaluation of these modes for more target groups such as people with disabilities.

Technology - Computer science

assistive technology software, click helper, mouse, mouse pointer, gesture, hover, Fitts’ law

Yes

10

Yes

35

114

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https://pergamos.lib.uoa.gr/uoa/dl/object/2926651