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Complete vhar_system conclusion

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Erwan Normand
2024-10-01 11:18:32 +02:00
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2-perception/vhar-textures/1-introduction.tex
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Databases of visuo-haptic textures have been developed in this way \cite{culbertson2014one,balasubramanian2024sens3}, but they have not yet been explored in an immersive and direct touch context with \AR and wearable haptics.
In this chapter, we investigate whether simultaneous and \textbf{co-localized visual and wearable haptic texture augmentation of tangible surfaces} in \AR can be perceived in a coherent and realistic manner, and to what extent each sensory modality would contribute to the overall perception of the augmented texture.
We used nine pairs of \textbf{data-driven visuo-haptic textures} from the \HaTT database \cite{culbertson2014one}, which we rendered using the visuo-haptic system presented in \chapref{vhar_system}, an \OST-\AR headset, and a wearable voice-coil device worn on the finger.
In a \textbf{user study}, 20 participants freely explored the combination of the visuo-haptic texture pairs to rate their coherence, realism and perceived roughness.
We used nine pairs of \textbf{data-driven visuo-haptic textures} from the \HaTT database \cite{culbertson2014one}, which we rendered using the wearable visuo-haptic augmentatio nsystem presented in \chapref{vhar_system}.%, an \OST-\AR headset, and a wearable voice-coil device worn on the finger.
In a \textbf{user study}, 20 participants freely explored in direct touch the combination of the visuo-haptic texture pairs to rate their coherence, realism and perceived roughness.
We aimed to assess \textbf{which haptic textures were matched with which visual textures}, how the roughness of the visual and haptic textures was perceived, and whether \textbf{the perceived roughness} could explain the matches made between them.
\noindentskip The contributions of this chapter are:

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2-perception/vhar-textures/5-conclusion.tex
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\label{conclusion}
In this chapter, we investigated how users perceived simultaneous and co-localized visuo-haptic texture augmentations of tangible surfaces seen in immersive \OST-\AR and touched directly with the index finger.
Using the wearable visuo-haptic augmentation system presented in \chapref{vhar_system}, the haptic roughness texture was rendered to a voice-coil worn on the middle-phalanx index, based on the \HaTT data-driven models and finger speed.
Using the wearable visuo-haptic augmentation system presented in \chapref{vhar_system}, the haptic roughness texture was rendered with on the \HaTT data-driven models and finger speed.
In a user study, 20 participants rated the coherence, realism and perceived roughness of the combination of nine representative visuo-haptic texture pairs.
The results showed that participants consistently identified and matched clusters of visual and haptic textures with similar perceived roughness.