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Usability evaluation of two simple methods for representing heaviness of virtual objects

Hummel, Johannes and Dodiya, Janki and Wolff, Robin and Gerndt, Andreas and Kuhlen, Torsten (2013) Usability evaluation of two simple methods for representing heaviness of virtual objects. In: Virtuelle und Erweiterte Realität - 10. Workshop der GI-Fachgruppe VR/AR, pp. 157-168. Shaker Verlag. 10. Workshop der GI-Fachgruppe VR/AR 2013, 19. - 20. September 2013, Würzburg, Deutschland. ISBN 978-3-8440-2211-7 ISSN 0945-0807

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Abstract

Perception of heaviness of virtual objects can play an important role in improving the user interaction within virtual environments. It could especially prove beneficial in applications, such as virtual assembly and medical surgery, which largely consist of selection, manipulation and grasping tasks. In order to achieve weight perception in virtual environments, haptic devices have been commonly used. However, they are hard to incorporate into immersive virtual environments (IVEs) due to their functional complexity. This paper evaluates the usability of two simple interaction approaches using a light-weight finger-tracking device. One method is based on the distance between tracked fingers and the thumb, the other uses the intensity of pinching fingers during grasping gestures providing tactile feedback. Building on previous results of evaluating the performance by measuring the Weber fraction, in this paper, we further evaluate usability of our methods as a function of the overall workload placed on the user while performing a sorting task based on perceived weight. The results confirmed that the performance of both methods for the sorting task is comparable and both methods allow distinguishing between the heaviness. However, the experienced workload was higher for the pinch based compared to the distance based method and participants had higher confidence in the distance based method.

Item URL in elib:https://elib.dlr.de/86451/
Document Type:Conference or Workshop Item (Speech)
Title:Usability evaluation of two simple methods for representing heaviness of virtual objects
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hummel, JohannesGerman Aerospace Center (DLR), GermanyUNSPECIFIED
Dodiya, JankiGerman Aerospace Center (DLR), GermanyUNSPECIFIED
Wolff, RobinGerman Aerospace Center (DLR), GermanyUNSPECIFIED
Gerndt, AndreasGerman Aerospace Center (DLR), GermanyUNSPECIFIED
Kuhlen, TorstenVirtual Reality Group, RWTH Aachen University, GermanyUNSPECIFIED
Date:19 September 2013
Journal or Publication Title:Virtuelle und Erweiterte Realität - 10. Workshop der GI-Fachgruppe VR/AR
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 157-168
Editors:
EditorsEmail
Latoschik, Marc ErichUniversity of Würzburg
Staadt, OliverUniversity of Rostock
Steinicke, FrankUniversity of Würzburg
Publisher:Shaker Verlag
ISSN:0945-0807
ISBN:978-3-8440-2211-7
Status:Published
Keywords:3D interaction, input devices, pseudo haptics, user studies, workload, NASA TLX
Event Title:10. Workshop der GI-Fachgruppe VR/AR 2013
Event Location:Würzburg, Deutschland
Event Type:Workshop
Event Dates:19. - 20. September 2013
Organizer:Fachgruppe – Virtuelle Realität und Augmented Reality - VR&AR der Gesellschaft für Informatik (GI)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):R - Vorhaben On-Orbit Servicing - GNC und VR
Location: Braunschweig
Institutes and Institutions:Institut of Simulation and Software Technology > Software for Space Systems and Interactive Visualisation
Deposited By: Hummel, Johannes Wolfgang
Deposited On:16 Dec 2013 10:17
Last Modified:08 May 2014 23:30

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