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WIP vhar_system intro

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Erwan Normand
2024-09-30 12:29:47 +02:00
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1-background/related-work/4-visuo-haptic-ar.tex
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@@ -152,7 +152,7 @@ We describe in the next section how wearable haptics have been integrated with i
A few wearable haptic devices have been specifically designed or experimentally tested for direct hand interaction in immersive \AR.
Since virtual or augmented objects are naturally touched, grasped, and manipulated directly with the fingertips (\secref{exploratory_procedures} and \secref{grasp_types}), the main challenge of wearable haptics for \AR is to provide haptic sensations of these interactions while keeping the fingertips free to interact with the \RE.
Several approaches have been proposed to move the haptic actuator to a different location on the hand.
Several approaches have been proposed to move the haptic actuator to a different location, on the outside of the finger or the hand, \eg the nail, the top of a phalanx, or the wrist.
Yet, they differ greatly in the actuators used (\secref{wearable_haptic_devices}), thus the haptic feedback (\secref{tactile_rendering}), and the placement of the haptic rendering.
Other wearable haptic actuators have been proposed for \AR, but are not discussed here.
@@ -162,7 +162,7 @@ Another category of actuators relies on systems that cannot be considered as por
\subsubsection{Nail-Mounted Devices}
\label{vhar_nails}
\textcite{ando2007fingernailmounted} were the first to propose to moving the actuator from the fingertip to the nail, as described in \secref{texture_rendering}.
\textcite{ando2007fingernailmounted} were the first to move the actuator from the fingertip to propose the nail, as described in \secref{texture_rendering}.
This approach was later extended by \textcite{teng2021touch} with Touch\&Fold, a haptic device able to unfold its end-effector on demand to make contact with the fingertip when touching \VOs (\figref{teng2021touch_1}).
This moving platform also contains a \LRA (\secref{moving_platforms}) and provides contact pressure and texture sensations.
%The whole system is very compact (\qtyproduct{24 x 24 x 41}{\mm}), lightweight (\qty{9.5}{\g}), and fully portable by including a battery and Bluetooth wireless communication. \qty{20}{\ms} for the Bluetooth