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6 changed files with 12 additions and 5 deletions

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@@ -88,8 +88,8 @@ A sample $r(t_j, t_k)$ of the audio signal at sampling time $t_k$, with $t_k >=
\begin{subequations} \begin{subequations}
\label{eq:signal} \label{eq:signal}
\begin{align} \begin{align}
r(t_j, t_k) & = A\, \text{sgn} ( \sin (2 \pi \frac{\dot{x}\,(t_j)}{\lambda} t_k + \phi_j ) ) & \label{eq:signal_speed} \\ r(t_j, t_k) & = A\, \text{sgn} ( \sin (2 \pi \frac{\dot{x}\,(t_j)}{\lambda} t_k + \phi(t_j) ) ) & \label{eq:signal_speed} \\
\phi_j & = \phi_{j-1} + 2 \pi \frac{\dot{x}\,(t_j) - \dot{x}\,(t_j - 1)}{\lambda} t_k & \label{eq:signal_phase} \phi(t_j) & = \phi(t_{j-1}) + 2 \pi \frac{\dot{x}\,(t_j) - \dot{x}\,(t_{j-1})}{\lambda} t_k & \label{eq:signal_phase}
\end{align} \end{align}
\end{subequations} \end{subequations}
@@ -97,7 +97,7 @@ This rendering preserves the sensation of a constant spatial frequency of the vi
% %
%Note that the finger position and velocity are transformed from the camera frame $\poseFrame{c}$ to the texture frame $\poseFrame{t}$, with the $x$ axis aligned with the texture direction. %Note that the finger position and velocity are transformed from the camera frame $\poseFrame{c}$ to the texture frame $\poseFrame{t}$, with the $x$ axis aligned with the texture direction.
% %
%However, when a new finger position is estimated at time $t_j$, the phase $\phi_j$ needs to be adjusted as well with the frequency to ensure a continuity in the signal as described in \eqref{signal_phase}. %However, when a new finger position is estimated at time $t_j$, the phase $\phi(t_j)$ needs to be adjusted as well with the frequency to ensure a continuity in the signal as described in \eqref{signal_phase}.
% %
The phase matching avoids sudden changes in the actuator movement thus affecting the texture perception in an uncontrolled way (\figref{phase_adjustment}) and, contrary to previous work \cite{asano2015vibrotactile,ujitoko2019modulating}, it enables a free exploration of the texture by the user with no constraints on the finger speed. The phase matching avoids sudden changes in the actuator movement thus affecting the texture perception in an uncontrolled way (\figref{phase_adjustment}) and, contrary to previous work \cite{asano2015vibrotactile,ujitoko2019modulating}, it enables a free exploration of the texture by the user with no constraints on the finger speed.
A square wave is chosen to get a rendering closer to a real grating texture with the sensation of crossing edges \cite{ujitoko2019modulating}, and because the roughness perception of sine wave textures has been shown not to reproduce the roughness perception of real grating textures \cite{unger2011roughness}. A square wave is chosen to get a rendering closer to a real grating texture with the sensation of crossing edges \cite{ujitoko2019modulating}, and because the roughness perception of sine wave textures has been shown not to reproduce the roughness perception of real grating textures \cite{unger2011roughness}.

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@@ -3,6 +3,13 @@
\nochaptertoc \nochaptertoc
% Résumé vulgarisé en 700 caractères
% Les dispositifs haptiques portables procurent des sensations tactiles tout en étant compacts.
% Mais ils ont été peu utilisés en réalité augmentée (RA), où le contenu virtuel est intégré à la perception du monde réel.
% Cette thèse explore leur potentiel pour améliorer les interactions de la main avec des objets virtuels en RA.
% Nous étudions d'abord l'impact du rendu visuel sur la perception des textures vibrotactiles virtuelles qui augmentent des surfaces réelles touchées directement par le doigt.
% Nous étudions ensuite comment des retours sensoriels visuo-haptiques augmentant la main améliorent les performances et lexpérience utilisateur lors de la manipulation d'objets virtuels en RA.
\selectlanguage{french} \selectlanguage{french}
Dans ce manuscrit de thèse, nous montrons comment la \emph{réalité augmentée (RA)}, qui intègre un contenu visuel virtuel dans la perception du monde réel, et l'\emph{haptique portable}, qui fournit des sensations tactiles sur la peau, peuvent améliorer les interactions de la main avec des objets virtuels et augmentés. Dans ce manuscrit de thèse, nous montrons comment la \emph{réalité augmentée (RA)}, qui intègre un contenu visuel virtuel dans la perception du monde réel, et l'\emph{haptique portable}, qui fournit des sensations tactiles sur la peau, peuvent améliorer les interactions de la main avec des objets virtuels et augmentés.

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@@ -2614,7 +2614,7 @@
title = {Enlarging a {{Smartphone}} with {{AR}} to {{Create}} a {{Handheld VESAD}} ({{Virtually Extended Screen-Aligned Display}})}, title = {Enlarging a {{Smartphone}} with {{AR}} to {{Create}} a {{Handheld VESAD}} ({{Virtually Extended Screen-Aligned Display}})},
booktitle = {{{IEEE Int}}. {{Symp}}. {{Mix}}. {{Augment}}. {{Real}}.}, booktitle = {{{IEEE Int}}. {{Symp}}. {{Mix}}. {{Augment}}. {{Real}}.},
author = {Normand, Erwan and McGuffin, Michael J.}, author = {Normand, Erwan and McGuffin, Michael J.},
date = {2018}, date = {2018-10},
pages = {123--133}, pages = {123--133},
doi = {10/gm7xsc} doi = {10/gm7xsc}
} }
@@ -2630,7 +2630,7 @@
@article{normand2024visuohaptic, @article{normand2024visuohaptic,
title = {Visuo-{{Haptic Rendering}} of the {{Hand}} during {{3D Manipulation}} in {{Augmented Reality}}}, title = {Visuo-{{Haptic Rendering}} of the {{Hand}} during {{3D Manipulation}} in {{Augmented Reality}}},
author = {Normand, Erwan and Pacchierotti, Claudio and Marchand, Eric and Marchal, Maud}, author = {Normand, Erwan and Pacchierotti, Claudio and Marchand, Eric and Marchal, Maud},
date = {2024}, date = {2024-01},
journaltitle = {IEEE Trans. Haptics}, journaltitle = {IEEE Trans. Haptics},
volume = {17}, volume = {17},
number = {2}, number = {2},