Monthly Archives: December 2016

Towards the improvement of GUARD graphical user interface

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Žiga Kopušar
Guardiaris d.o.o., Podjunska ulica 13, Ljubljana, Slovenia
Franc Novak
Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia

Abstract: In this paper, we describe a case study of usability testing of the GUARD Control Desk graphical user interface, which is a part of the GUARD simulator and is used for exercise planning, execution and evaluation in soldier training. The usability testing was performed in the development phase of a new version of user interface.

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Wizard of Oz experiment for Prototyping Multimodal Interfaces in Virtual Reality

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Blaž Gombač, Matej Zemljak, Patrik Širol, Damir Deželjin, Klen Čopič Pucihar, Matjaž Kljun
University of Primorska, FAMNIT, Glagoljaška 8, Koper, Slovenia

Abstract: In recent years the field of virtual reality has witnessed a rapid growth with significant investments in both hardware and software development. It has several potential applications for entertainment, education and enterprise where users benefit from being immersed into virtual worlds. VR headsets are available in several forms and price ranges from simple and inexpensive Google Cardboard to more complex products such as Oculus Rift. Nevertheless, designing fully operational virtual reality applications for researching new complex multimodal interaction possibilities (e.g. mid-air gesture, voice, haptics, etc.) may be difficult to implement, costly and time consuming. For this reason we have looked into ways of rapidly prototyping virtual reality interactions. Our approach consists of the Wizard of Oz experiment in which subjects interact with a computer system believing to be autonomous, but is in reality operated by researchers. The presented system allows non-technical designers to explore various multimodal interactions with rapid prototyping of VR environments.

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Evaluation of common input devices for web browsing: mouse vs touchpad vs touchscreen

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Andrej Maleckar, Matjaž Kljun, Peter Rogelj, Klen Čopič Pucihar
University of Primorska, FAMNIT, Glagoljaška 8, Koper, Slovenia

Abstract: With the ever increasing connectivity to the Internet the use of the web has spread from static environments of desktop computers to mobile context where we interact with the web though laptop computers, tablet computers, mobile phones and wearable devices. Recent studies have shown that young people access the web using various devices and input techniques and spend on average more than 20 hours a week on the web. In this paper we plan to investigate which input technology is most usable or preferred for performing different tasks on the web. We decided to compare and evaluate the usability of the three most used input devices for web browsing, namely: a computer mouse and a touchpad on a laptop, and a touchscreen on a smartphone. For this purpose we have built a custom web page where users had to perform seven common tasks on web: open a URL address, copy/paste a URL address, copy/paste text, scroll up-down, scroll left-right, zoom in the context of a web page, and navigate a map. The results show that the mouse is still a preferred input device with shortest completion times, followed by the touchscreen interface even if it performed slower at some tasks compared to touchpad, which was marked as least preferred.

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