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WH for AR

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Erwan Normand
2024-09-12 20:17:20 +02:00
parent cb38a449b3
commit 8fbeea59ae
6 changed files with 39 additions and 10 deletions
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1-introduction/related-work/2-wearable-haptics.tex
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@@ -63,7 +63,7 @@ The rendering of a haptic device is indeed determined by the nature of the actua
Several actuators are often combined in a haptic device to obtain richer haptic feedback.
\subsubsection{Moving Platforms}
\label{normal_actuators}
\label{moving_platforms}
The moving platforms translate perpendicularly on the skin to create sensations of contact, pressure and edges~\cite{pacchierotti2017wearable}.
Placed under the fingertips, they can come into contact with the skin with different forces, speeds and orientations.
@@ -188,11 +188,6 @@ Virtual data-driven textures were perceived as similar to real textures, except
The perceived roughness of real surfaces can be then modified when touched by a tool with a vibrotactile actuator attached~\cite{culbertson2014modeling,ujitoko2019modulating} or directly with the finger wearing the vibrotactile actuator~\cite{asano2015vibrotactile}, creating a haptic texture augmentation.
The objective is not just to render a virtual texture, but to alter the perception of a real, tangible surface, usually with wearable haptic devices, in what is known as haptic augmented reality (HAR)~\cite{bhatia2024augmenting,jeon2009haptic}.
One additional challenge of augmenting the finger touch is to keep the fingertip free to touch the real environment, thus delocalizing the actuator elsewhere on the hand~\cite{ando2007fingernailmounted,friesen2024perceived,normand2024visuohaptic,teng2021touch}.
Of course, the fingertip skin is not deformed by the virtual texture and only vibrations are felt, but it has been shown that the vibrations produced on the fingertip skin running over a real surface are texture specific and similar between individuals~\cite{manfredi2014natural}.
A common method vibrotactile rendering of texture is to use a sinusoidal signal whose frequency is modulated by the finger position or velocity~\cite{asano2015vibrotactile,friesen2024perceived,strohmeier2017generating,ujitoko2019modulating}.
It remains unclear whether such vibrotactile texture augmentation is perceived the same when integrated into visual AR or VR environments or touched with a virtual hand instead of the real hand.
The perceived roughness of real surfaces can be then modified when touched by a tool with a vibrotactile actuator attached~\cite{culbertson2014modeling,ujitoko2019modulating} or directly with the finger wearing the vibrotactile actuator~\cite{asano2015vibrotactile}, creating a haptic texture augmentation.
The objective is not just to render a virtual texture, but to alter the perception of a real, tangible surface, usually with wearable haptic devices, in what is known as haptic augmented reality (HAR)~\cite{bhatia2024augmenting,jeon2009haptic}.
One additional challenge of augmenting the finger touch is to keep the fingertip free to touch the real environment, thus delocalizing the actuator elsewhere on the hand~\cite{ando2007fingernailmounted,friesen2024perceived,teng2021touch}.