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Erwan Normand
2024-10-10 15:51:50 +02:00
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2-perception/vhar-textures/1-introduction.tex
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@@ -3,7 +3,7 @@ Among the various haptic texture augmentations, data-driven methods allow to cap
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 wearable visuo-haptic augmentatio nsystem presented in \chapref{vhar_system}.%, an \OST-\AR headset, and a wearable voice-coil device worn on the finger.
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.

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2-perception/vhar-textures/3-results.tex
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@@ -145,7 +145,7 @@ The coherence of the texture pairs was considered moderate (\mean{4.6}, \sd{1.2}
\begin{subfigs}{results_questions}{Boxplots of the questionnaire results for each visual hand rendering.}[
Pairwise Wilcoxon signed-rank tests with Holm-Bonferroni adjustment: * is \pinf{0.05}, ** is \pinf{0.01} and *** is \pinf{0.001}.
Lower is better for Difficulty and Uncomfortable; higher is better for Realism and Textures Match.%
Lower is better for Difficulty and Uncomfortable; higher is better for Realism and Textures Match.
][
\item By modality.
\item By task.