Effect of 2.5D haptic feedback on virtual object perception via a stylus

Abstract As touch screen technologies advanced, a digital stylus has become one of the essential accessories for a smart device. However, most of the digital styluses so far provide limited tactile feedback to a user. Therefore we focused on the limitation and noted the potential that a digital styl...

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Autores principales:	Gyuwon Kim, Donghyun Hwang, Jaeyoung Park
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/74587896d1564b608cffb7eb9f8b607d
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id	oai:doaj.org-article:74587896d1564b608cffb7eb9f8b607d
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spelling	oai:doaj.org-article:74587896d1564b608cffb7eb9f8b607d2021-12-02T18:48:23ZEffect of 2.5D haptic feedback on virtual object perception via a stylus10.1038/s41598-021-98589-22045-2322https://doaj.org/article/74587896d1564b608cffb7eb9f8b607d2021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-98589-2https://doaj.org/toc/2045-2322Abstract As touch screen technologies advanced, a digital stylus has become one of the essential accessories for a smart device. However, most of the digital styluses so far provide limited tactile feedback to a user. Therefore we focused on the limitation and noted the potential that a digital stylus may offer the sensation of realistic interaction with virtual environments on a touch screen using a 2.5D haptic system. Thus, we developed a haptic stylus with SMA (Shape Memory Alloy) and a 2.5D haptic rendering algorithm to provide lateral skin-stretch feedback to mimic the interaction force between fingertip and a stylus probing over a bumpy surface. We conducted two psychophysical experiments to evaluate the effect of 2.5D haptic feedback on the perception of virtual object geometry. Experiment 1 investigated the human perception of virtual bump size felt via the proposed lateral skin-stretch stylus and a vibrotactile stylus as reference. Experiment 2 tested the participants’ ability to count the number of virtual bumps rendered via the two types of haptic styluses. The results of Experiment 1 indicate that the participants felt the size of virtual bumps rendered with lateral skin-stretch stylus significantly sensitively than the vibrotactile stylus. Similarly, the participants counted the number of virtual bumps rendered with the lateral skin-stretch stylus significantly better than with the vibrotactile stylus. A common result of the two experiments is a significantly longer mean trial time for the skin-stretch stylus than the vibrotactile stylus.Gyuwon KimDonghyun HwangJaeyoung ParkNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Gyuwon Kim Donghyun Hwang Jaeyoung Park Effect of 2.5D haptic feedback on virtual object perception via a stylus
description	Abstract As touch screen technologies advanced, a digital stylus has become one of the essential accessories for a smart device. However, most of the digital styluses so far provide limited tactile feedback to a user. Therefore we focused on the limitation and noted the potential that a digital stylus may offer the sensation of realistic interaction with virtual environments on a touch screen using a 2.5D haptic system. Thus, we developed a haptic stylus with SMA (Shape Memory Alloy) and a 2.5D haptic rendering algorithm to provide lateral skin-stretch feedback to mimic the interaction force between fingertip and a stylus probing over a bumpy surface. We conducted two psychophysical experiments to evaluate the effect of 2.5D haptic feedback on the perception of virtual object geometry. Experiment 1 investigated the human perception of virtual bump size felt via the proposed lateral skin-stretch stylus and a vibrotactile stylus as reference. Experiment 2 tested the participants’ ability to count the number of virtual bumps rendered via the two types of haptic styluses. The results of Experiment 1 indicate that the participants felt the size of virtual bumps rendered with lateral skin-stretch stylus significantly sensitively than the vibrotactile stylus. Similarly, the participants counted the number of virtual bumps rendered with the lateral skin-stretch stylus significantly better than with the vibrotactile stylus. A common result of the two experiments is a significantly longer mean trial time for the skin-stretch stylus than the vibrotactile stylus.
format	article
author	Gyuwon Kim Donghyun Hwang Jaeyoung Park
author_facet	Gyuwon Kim Donghyun Hwang Jaeyoung Park
author_sort	Gyuwon Kim
title	Effect of 2.5D haptic feedback on virtual object perception via a stylus
title_short	Effect of 2.5D haptic feedback on virtual object perception via a stylus
title_full	Effect of 2.5D haptic feedback on virtual object perception via a stylus
title_fullStr	Effect of 2.5D haptic feedback on virtual object perception via a stylus
title_full_unstemmed	Effect of 2.5D haptic feedback on virtual object perception via a stylus
title_sort	effect of 2.5d haptic feedback on virtual object perception via a stylus
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/74587896d1564b608cffb7eb9f8b607d
work_keys_str_mv	AT gyuwonkim effectof25dhapticfeedbackonvirtualobjectperceptionviaastylus AT donghyunhwang effectof25dhapticfeedbackonvirtualobjectperceptionviaastylus AT jaeyoungpark effectof25dhapticfeedbackonvirtualobjectperceptionviaastylus
_version_	1718377631035949056

Effect of 2.5D haptic feedback on virtual object perception via a stylus

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