Virtual Hand Realism Affects Object Size Perception in Body-Based Scaling

Ogawa, Norio; Narumi, Takuji; Hirose, Michitaka

doi:10.1109/vr.2019.8798040

Cited by 53 publications

(52 citation statements)

References 52 publications

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“…As already mentioned, body scaling refers to humans utilizing their own body as a primary scale cue, hence the virtual representation of the user's body greatly affects their perception of sizes and distances in a VE (Ogawa et al, 2017;Ogawa et al, 2019). Linkenauger et al (2013) studied the role of one's hand as a metric for size perception; they conducted an experiment where they scaled the users' virtual hand and found out that it had a strong correlation with perceived object size.…”

Section: Body Scalingmentioning

confidence: 99%

“…Linkenauger et al (2013) studied the role of one's hand as a metric for size perception; they conducted an experiment where they scaled the users' virtual hand and found out that it had a strong correlation with perceived object size. Ogawa et al (2019) studied the effect of hand visual fidelity on object size perception and found that the visual realism of the hand affects the extent of the body scaling effect. van der Hoort et al (2011) embodied the entire user in a doll's body as well as in a giant's body using a stereoscopic video camera system and an HMD.…”

Section: Body Scalingmentioning

confidence: 99%

“…We did not use full body tracking or attempt to induce a strong body ownership illusion (Slater et al, 2009), so there was no visualization of any body parts in the VE other than the subject's hands. We used the default UE VR hand visualization for interaction and to present a mediumfidelity body size cue (Ogawa et al, 2019). There was no difference between the conditions regarding how the hands functioned or how the user was able to move.…”

Section: Virtual Environmentmentioning

confidence: 99%

See 2 more Smart Citations

The Plausibility Paradox for Resized Users in Virtual Environments

Pouke¹,

Mimnaugh²,

Chambers³

et al. 2021

Front. Virtual Real.

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This paper identifies and confirms a perceptual phenomenon: when users interact with simulated objects in a virtual environment where the users’ scale deviates greatly from normal, there is a mismatch between the object physics they consider realistic and the object physics that would be correct at that scale. We report the findings of two studies investigating the relationship between perceived realism and a physically accurate approximation of reality in a virtual reality experience in which the user has been scaled by a factor of ten. Study 1 investigated perception of physics when scaled-down by a factor of ten, whereas Study 2 focused on enlargement by a similar amount. Studies were carried out as within-subjects experiments in which a total of 84 subjects performed simple interaction tasks with objects under two different physics simulation conditions. In the true physics condition, the objects, when dropped and thrown, behaved accurately according to the physics that would be correct at that either reduced or enlarged scale in the real world. In the movie physics condition, the objects behaved in a similar manner as they would if no scaling of the user had occurred. We found that a significant majority of the users considered the movie physics condition to be the more realistic one. However, at enlarged scale, many users considered true physics to match their expectations even if they ultimately believed movie physics to be the realistic condition. We argue that our findings have implications for many virtual reality and telepresence applications involving operation with simulated or physical objects in abnormal and especially small scales.

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Section: Body Scalingmentioning

confidence: 99%

Section: Body Scalingmentioning

confidence: 99%

Section: Virtual Environmentmentioning

confidence: 99%

See 1 more Smart Citation

The Plausibility Paradox for Resized Users in Virtual Environments

Pouke¹,

Mimnaugh²,

Chambers³

et al. 2021

Front. Virtual Real.

View full text Add to dashboard Cite

show abstract

“…As already mentioned, body scaling refers to humans utilizing their own body as a primary scale cue, hence the virtual representation of the user's body greatly affects their perception of sizes and distances in a VE (Ogawa et al 2019;Ogawa et al 2017). Linkenauger et al (2013) studied the role of one's hand as a metric for size perception; they conducted an experiment where they scaled the users' virtual hand and found out that it had a strong correlation with perceived object size.…”

Section: Body Scalingmentioning

confidence: 99%

The Plausibility Paradox For Scaled-Down Users In Virtual Environments

Pouke

Mimnaugh

Ojala

et al. 2020

2020 IEEE Conference on Virtual Reality and 3D User Interfaces (VR)

View full text Add to dashboard Cite

This paper identifies and confirms a perceptual phenomenon: when users interact with simulated objects in a virtual environment where the users' scale deviates greatly from normal, there is a mismatch between the object physics they consider realistic and the object physics that would be correct at that scale. We report the findings of two studies investigating the relationship between perceived realism and a physically accurate approximation of reality in a virtual reality experience in which the user has been scaled by a factor of ten. Study 1 investigated perception of physics when scaled-down by a factor of ten, whereas Study 2 focused on enlargement by a similar amount. Studies were carried out as within-subjects experiments in which a total of 84 subjects performed simple interaction tasks with objects under two different physics simulation conditions. In the true physics condition, the objects, when dropped and thrown, behaved accurately according to the physics that would be correct at that either reduced or enlarged scale in the real world. In the movie physics condition, the objects behaved in a similar manner as they would if no scaling of the user had occurred. We found that a significant majority of the users considered the movie physics condition to be the more realistic one. However, at enlarged scale, many users considered true physics to match their expectations even if they ultimately believed movie physics to be the realistic condition. We argue that our findings have implications for many virtual reality and telepresence applications involving operation with simulated or physical objects in abnormal and especially small scales.

show abstract

“…In the present paper, we describe the combination of these two aspects as "user representations" [4]. A series of studies has demonstrated that user representations in VR differently impact the degree of experienced embodiment [5], [6], multisensory integration [7], attentional processing [8], distance perception [9], size estimation [10]- [12], and task performance [13]. Hence, it is possible that the detection of visual content in an immersive 3D virtual environment is also differently modulated, depending on the type of user representation used to interact in VR.…”

Section: ----------------mentioning

confidence: 99%

Impact of Information Placement and User Representations in VR on Performance and Embodiment

Seinfeld

Feuchtner

Pinzek

et al. 2022

IEEE Trans. Visual. Comput. Graphics

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Human sensory processing is sensitive to the proximity of stimuli to the body. It is therefore plausible that these perceptual mechanisms also modulate the detectability of content in VR, depending on its location. We evaluate this in a user study and further explore the impact of the user's representation during interaction. We also analyze how embodiment and motor performance are influenced by these factors. In a dual-task paradigm, participants executed a motor task, either through virtual hands, virtual controllers, or a keyboard. Simultaneously, they detected visual stimuli appearing in different locations. We found that, while actively performing a motor task in the virtual environment, performance in detecting additional visual stimuli is higher when presented near the user's body. This effect is independent of how the user is represented and only occurs when the user is also engaged in a secondary task. We further found improved motor performance and increased embodiment when interacting through virtual tools and hands in VR, compared to interacting with a keyboard. This study contributes to better understanding the detectability of visual content in VR, depending on its location in the virtual environment, as well as the impact of different user representations on information processing, embodiment, and motor performance.

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Virtual Hand Realism Affects Object Size Perception in Body-Based Scaling

Cited by 53 publications

References 52 publications

The Plausibility Paradox for Resized Users in Virtual Environments

The Plausibility Paradox for Resized Users in Virtual Environments

The Plausibility Paradox For Scaled-Down Users In Virtual Environments

Impact of Information Placement and User Representations in VR on Performance and Embodiment

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