erwan/phd-thesis
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Better figures

Browse Source
This commit is contained in:
Erwan Normand
2024-09-24 15:07:13 +02:00
parent 9ba5d344a5
commit b8b799df3d
18 changed files with 383 additions and 418 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
2-perception/ar-textures/2-experiment.tex
View File

@@ -1,21 +1,19 @@
\section{User Study}
\label{experiment}
\begin{subfigs}{setup}{%
User Study.
}[%
\item The nine visuo-haptic textures used in the user study, selected from the HaTT database \cite{culbertson2014one}. %
The texture names were never shown, so as to prevent the use of the user's visual or haptic memory of the textures.
\item Experimental setup. %
Participant sat in front of the tangible surfaces, which were augmented with visual textures displayed by the HoloLens~2 AR headset and haptic roughness textures rendered by the vibrotactile haptic device placed on the middle index phalanx. %
A webcam above the surfaces tracked the finger movements.
\item First person view of the user study, as seen through the immersive AR headset HoloLens~2. %
The visual texture overlays are statically displayed on the surfaces, allowing the user to move around to view them from different angles. %
The haptic roughness texture is generated based on HaTT data-driven texture models and finger speed, and it is rendered on the middle index phalanx as it slides on the considered surface.%
]
\subfig[0.32]{experiment/textures}%
\subfig[0.32]{experiment/setup}%
\subfig[0.32]{experiment/view}%
\begin{subfigs}{setup}{User Study. }[][
\item The nine visuo-haptic textures used in the user study, selected from the HaTT database \cite{culbertson2014one}.
The texture names were never shown, so as to prevent the use of the user's visual or haptic memory of the textures.
\item Experimental setup.
Participant sat in front of the tangible surfaces, which were augmented with visual textures displayed by the HoloLens~2 AR headset and haptic roughness textures rendered by the vibrotactile haptic device placed on the middle index phalanx.
A webcam above the surfaces tracked the finger movements.
\item First person view of the user study, as seen through the immersive AR headset HoloLens~2.
The visual texture overlays are statically displayed on the surfaces, allowing the user to move around to view them from different angles.
The haptic roughness texture is generated based on HaTT data-driven texture models and finger speed, and it is rendered on the middle index phalanx as it slides on the considered surface.
]
\subfig[0.32]{experiment/textures}
\subfig[0.32]{experiment/setup}
\subfig[0.32]{experiment/view}
\end{subfigs}
The user study aimed at analyzing the user perception of tangible surfaces when augmented through a visuo-haptic texture using AR and vibrotactile haptic feedback provided on the finger touching the surfaces.
@@ -26,7 +24,6 @@ Nine representative visuo-haptic texture pairs from the HaTT database \cite{culb
%
Our objective is to assess which haptic textures were associated with which visual textures, how the roughness of the visual and haptic textures are perceived, and whether the perceived roughness can explain the matches made between them.
\subsection{The textures}
\label{textures}
@@ -38,7 +35,6 @@ Nine texture pairs were selected (\figref{setup}, left) to cover various perceiv
%
All these visual and haptic textures are isotropic: their rendering (appearance or roughness) is the same whatever the direction of the movement on the surface, \ie there are no local deformations (holes, bumps, or breaks).
\subsection{Apparatus}
\label{apparatus}
@@ -68,7 +64,6 @@ This latency was below the \qty{60}{\ms} threshold for vibrotactile feedback \ci
%
The user study was held in a quiet room with no windows, with one light source of \qty{800}{\lumen} placed \qty{70}{\cm} above the table.
\subsection{Procedure and Collected Data}
\label{procedure}
@@ -115,7 +110,6 @@ In an open question, participants commented also on their strategy for completin
%
The user study took on average 1 hour to complete.
\subsection{Participants}
\label{participants}
@@ -133,7 +127,6 @@ Participants were recruited at the university on a voluntary basis.
%
They all signed an informed consent form before the user study.
\subsection{Design}
\label{design}