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Erwan Normand
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1-background/related-work/4-visuo-haptic-ar.tex
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\section{Visuo-Haptic Augmentations of Hand-Object Interactions}
\label{visuo_haptic}
Everyday perception and manipulation of objects with the hand typically involves both the visual and haptic senses.
Perception and manipulation of objects with the hand typically involves both the visual and haptic senses.
Each sense has unique capabilities for perceiving certain object properties, such as color for vision or temperature for touch, but they are equally capable for many properties, such as roughness, hardness, or geometry \cite{baumgartner2013visual}.
Both \AR and wearable haptic systems integrate virtual content into the user's perception as sensory illusions.
@@ -67,7 +67,7 @@ The \MLE model implies that when seeing and touching a \VO in \AR, the combinati
\label{visual_haptic_influence}
Thus, a visuo-haptic perception of an object's property is robust to some difference between the two sensory modalities, as long as one can match their respective sensations to the same property.
In particular, the texture perception of everyday objects is known to be constructed from both vision and touch \cite{klatzky2010multisensory}.
In particular, the texture perception of objects is known to be constructed from both vision and touch \cite{klatzky2010multisensory}.
More precisely, when surfaces are evaluated by vision or touch alone, both senses discriminate their materials mainly by the same properties of roughness, hardness, and friction, and with similar performance \cite{bergmanntiest2007haptic,baumgartner2013visual,vardar2019fingertip}.
The overall perception can then be modified by changing one of the sensory modalities.
@@ -96,7 +96,7 @@ For example, in a fixed \VST-\AR screen (\secref{ar_displays}), by visually defo
%In all of these studies, the visual expectations of participants influenced their haptic perception.
%In particular, in \AR and \VR, the perception of a haptic rendering or augmentation can be influenced by the visual rendering of the \VO.
\subsubsection{Perception of Visuo-Haptic Rendering in AR and \VR}
\subsubsection{Perception of Visuo-Haptic Rendering in AR and VR}
\label{ar_vr_haptic}
Some studies have investigated the visuo-haptic perception of \VOs rendered with force-feedback and vibrotactile feedback in \AR and \VR.