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Fix acronyms

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Erwan Normand
2024-09-24 15:47:33 +02:00
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3-manipulation/visual-hand/2-method.tex
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\section{User Study}
\label{method}
This first experiment aims to analyze whether the chosen visual hand rendering affects the performance and user experience of manipulating virtual objects with bare hands in AR.
This first experiment aims to analyze whether the chosen visual hand rendering affects the performance and user experience of manipulating virtual objects with bare hands in \AR.
\subsection{Visual Hand Renderings}
\label{hands}
@@ -19,7 +19,7 @@ However, while the real hand can of course penetrate virtual objects, the visual
\subsubsection{None~(\figref{method/hands-none})}
\label{hands_none}
As a reference, we considered no visual hand rendering, as is common in AR \cite{hettiarachchi2016annexing, blaga2017usability, xiao2018mrtouch, teng2021touch}.
As a reference, we considered no visual hand rendering, as is common in \AR \cite{hettiarachchi2016annexing, blaga2017usability, xiao2018mrtouch, teng2021touch}.
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Users have no information about hand tracking and no feedback about contact with the virtual objects, other than their movement when touched.
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@@ -55,12 +55,12 @@ This rendering schematically renders the joints and phalanges of the fingers wit
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It can be seen as an extension of the Tips rendering to include the complete fingers articulations.
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It is widely used in VR \cite{argelaguet2016role, schwind2018touch, chessa2019grasping} and AR \cite{blaga2017usability, yoon2020evaluating}, as it is considered simple yet rich and comprehensive.
It is widely used in \VR \cite{argelaguet2016role, schwind2018touch, chessa2019grasping} and \AR \cite{blaga2017usability, yoon2020evaluating}, as it is considered simple yet rich and comprehensive.
\subsubsection{Mesh (\figref{method/hands-mesh})}
\label{hands_mesh}
This rendering is a 3D semi-transparent ($a=0.2$) hand model, which is common in VR \cite{prachyabrued2014visual, argelaguet2016role, schwind2018touch, chessa2019grasping, yoon2020evaluating, vanveldhuizen2021effect}.
This rendering is a 3D semi-transparent ($a=0.2$) hand model, which is common in \VR \cite{prachyabrued2014visual, argelaguet2016role, schwind2018touch, chessa2019grasping, yoon2020evaluating, vanveldhuizen2021effect}.
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It can be seen as a filled version of the Contour hand rendering, thus partially covering the view of the real hand.
@@ -163,7 +163,7 @@ This setup enabled a good and consistent tracking of the user's fingers.
First, participants were given a consent form that briefed them about the tasks and the protocol of the experiment.
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Then, participants were asked to comfortably sit in front of a table and wear the HoloLens~2 headset as shown in~\figref{tasks}, perform the calibration of the visual hand size as described in~\secref{apparatus}, and complete a 2-minutes training to familiarize with the AR rendering and the two considered tasks.
Then, participants were asked to comfortably sit in front of a table and wear the HoloLens~2 headset as shown in~\figref{tasks}, perform the calibration of the visual hand size as described in~\secref{apparatus}, and complete a 2-minutes training to familiarize with the \AR rendering and the two considered tasks.
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During this training, we did not use any of the six hand renderings we want to test, but rather a fully-opaque white hand rendering that completely occluded the real hand of the user.
@@ -182,9 +182,9 @@ None of the participants reported any deficiencies in their visual perception ab
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Two subjects were left-handed, while the twenty-two other were right-handed; they all used their dominant hand during the trials.
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Ten subjects had significant experience with VR (\enquote{I use it every week}), while the fourteen other reported little to no experience with VR.
Ten subjects had significant experience with \VR (\enquote{I use it every week}), while the fourteen other reported little to no experience with \VR.
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Two subjects had significant experience with AR (\enquote{I use it every week}), while the twenty-two other reported little to no experience with AR.
Two subjects had significant experience with \AR (\enquote{I use it every week}), while the twenty-two other reported little to no experience with \AR.
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Participants signed an informed consent, including the declaration of having no conflict of interest.