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Erwan Normand
2024-09-29 14:09:31 +02:00
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3-manipulation/visual-hand/2-method.tex
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@@ -146,7 +146,7 @@ Participants signed an informed consent, including the declaration of having no
Inspired by \textcite{laviolajr20173d}, we collected the following metrics during the experiment:
\begin{itemize}
\item \response{Completion Time}, defined as the time elapsed between the very first contact with the virtual cube and its correct placement inside the target volume; as subjects were asked to complete the tasks as fast as possible, lower completion times mean better performance.
\item \response{Completion Time}, defined as the time elapsed between the first contact with the virtual cube and its correct placement inside the target volume; as subjects were asked to complete the tasks as fast as possible, lower completion times mean better performance.
\item \response{Contacts}, defined as the number of separate times the user's hand makes contact with the virtual cube; in both tasks, a lower number of contacts means a smoother continuous interaction with the object.
\item \response{Time per Contact}, defined as the total time any part of the user's hand contacted the cube divided by the number of contacts; higher values mean that the user interacted with the object for longer non-interrupted periods of time.
\item \response{Grip Aperture} (solely for the grasp-and-place task), defined as the average distance between the thumb's fingertip and the other fingertips during the grasping of the cube; lower values indicate a greater finger interpenetration with the cube, resulting in a greater discrepancy between the real hand and the visual hand rendering constrained to the cube surfaces and showing how confident users are in their grasp \cite{prachyabrued2014visual, al-kalbani2016analysis, blaga2017usability, chessa2019grasping}.