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Conclusion xr_perception chapter

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Erwan Normand
2024-09-29 14:32:10 +02:00
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2-perception/xr-perception/1-introduction.tex
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@@ -4,8 +4,8 @@ Most of the haptic augmentations of tangible surfaces using with wearable haptic
Still, it is known that the visual rendering of a tangible can influence the perception of its haptic properties (\secref[related_work]{visual_haptic_influence}), and that the perception of same haptic force-feedback or vibrotactile rendering can differ between \AR and \VR, probably due to difference in perceived simultaneity between visual and haptic stimuli (\secref[related_work]{ar_vr_haptic}).
Indeed, while in \AR, the user can see their own hand touching, the haptic device worn and the \RE, in \VR they are hidden by the \VE while.
In this chapter, we investigate the role of the visual rendering of the hand (real or virtual) and its environment (\AR or \VR) on the perception of a \textbf{tangible surface whose haptic roughness is augmented with a wearable vibrotactile} device worn on the finger.
To do so, we employed the visuo-haptic system presented in \chapref{vhar_system} to render the texture augmentations of tangibles that can be directly touched with the bare finger.
In this chapter, we investigate the role of the visual virtuality of the hand (real or virtual) and its environment (\AR or \VR) on the perception of a \textbf{tangible surface whose haptic roughness is augmented with a wearable vibrotactile} device worn on the finger.
To do so, we used the visuo-haptic system presented in \chapref{vhar_system} to render virtual vibrotactile patterned textures (\secref[related_work]{texture_rendering}) to augment the tangible surface being touched.% touched by the finger.% that can be directly touched with the bare finger.
We evaluated, in \textbf{user study with psychophysical methods and extensive questionnaire}, the perceived roughness augmentation in three visual rendering conditions: \textbf{(1) without visual augmentation}, in \textbf{(2) \OST-\AR with a realistic virtual hand} rendering, and in \textbf{(3) \VR with the same virtual hand}.
To control for the influence of the visual rendering, the tangible surface was not visually augmented.