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Erwan Normand
2024-09-18 10:56:10 +02:00
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1-introduction/related-work/4-visuo-haptic-ar.tex
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@@ -30,8 +30,10 @@ Thus, the overall perception can be modified by changing one of the modalities,
Similarly but in VR, \textcite{degraen2019enhancing} combined visual textures with different passive haptic hair-like structure that were touched with the finger to induce a larger set of visuo-haptic materials perception.
\textcite{gunther2022smooth} studied in a complementary way how the visual rendering of a \VO touching the arm with a tangible object influenced the perception of roughness.
Likewise, visual textures were combined in VR with various tangible objects to induce a larger set of visuo-haptic material perceptions, in both active touch~\cite{degraen2019enhancing} and passive touch~\cite{gunther2022smooth} contexts.
A common finding of these studies is that haptic sensations seem to dominate the perception of roughness, suggesting that a smaller set of haptic textures can support a larger set of visual textures.
When performing a precision grasp (\secref{grasp_types}) in \VR, some discrepancy in spatial properties (\secref{spatial_properties}) between a tangible and a \VO is not noticeable by users: it took a relative difference of \percent{6} for the object width, \percent{44} for the surface orientation, and \percent{67} for the surface curvature to be perceived~\cite{detinguy2019how}.
%When performing a precision grasp (\secref{grasp_types}) in \VR, only a certain relative difference between the tangible and the \VO is noticeable: \percent{6} for the object width, \percent{44} for the surface orientation, and \percent{67} for the surface curvature~\cite{detinguy2019how}.
\subsubsection{Pseudo-Haptic Feedback}
\label{pseudo_haptic}