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Fix ref warnings

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This commit is contained in:
Erwan Normand
2024-06-26 18:30:19 +02:00
parent 9f259fa099
commit 5d8e6577a7
1 changed files with 4 additions and 4 deletions
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2-perception/xr-perception/4-experiment.tex
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@@ -70,7 +70,7 @@ Its size was adjusted to match the real hand of the participants before the expe
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%An OST-AR headset (Microsoft HoloLens~2) was chosen over a VST-AR headset because the former only adds virtual content to the real environment, while the latter streams a real-time video capture of the real environment, and one of our objectives was to directly compare a virtual environment replicating a real one, not to a video feed that introduces many other visual limitations~\cite{macedo2023occlusion}.
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The visual rendering of the virtual hand and environment is described in \secref{xr_perception:xr_perception:virtual_real_alignment}.
The visual rendering of the virtual hand and environment is described in \secref{xr_perception:virtual_real_alignment}.
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%In the \level{Virtual} rendering, a cardboard mask (with holes for sensors) was attached to the headset to block the view of the real environment and simulate a VR headset (see \figref{method/headset}).
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@@ -86,7 +86,7 @@ In the \level{Mixed} and \level{Real} conditions, the mask had two additional ho
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%This voice-coil was chosen for its wide frequency range (\qtyrange{10}{1000}{\Hz}) and its relatively low acceleration distortion, as specified by the manufacturer\footnotemark[1].
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%It was driven by an audio amplifier (XY-502, not branded) connected to a computer that generated the audio signal of the textures as described in \secref{xr_perception:xr_perception:method}, using the NAudio library and the WASAPI driver in exclusive mode.
%It was driven by an audio amplifier (XY-502, not branded) connected to a computer that generated the audio signal of the textures as described in \secref{xr_perception:method}, using the NAudio library and the WASAPI driver in exclusive mode.
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%The position of the finger relative to the sheet was estimated using a webcam placed on top of the box (StreamCam, Logitech) and the OpenCV library by tracking a \qty{2}{\cm} square fiducial marker (AprilTag) glued to top of the vibrotactile actuator.
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@@ -98,7 +98,7 @@ Participants sat comfortably in front of the box at a distance of \qty{30}{\cm},
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%A vibrotactile voice-coil actuator (HapCoil-One, Actronika) was encased in a 3D printed plastic shell with a \qty{2}{\cm} AprilTag glued to top, and firmly attached to the middle phalanx of the right index finger of the participants using a Velcro strap.
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The generation of the virtual texture and the control of the virtual hand is described in \secref{xr_perception:xr_perception:method}.
The generation of the virtual texture and the control of the virtual hand is described in \secref{xr_perception:method}.
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They also wore headphones with a pink noise masking the sound of the voice-coil.
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@@ -136,7 +136,7 @@ Participants were not told that there was a reference and a comparison texture.
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The order of presentation was randomised and not revealed to the participants.
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All textures were rendered as described in \secref{xr_perception:xr_perception:texture_generation} with period $\lambda$ of \qty{2}{\mm}, but with different amplitudes $A$ to create different levels of roughness.
All textures were rendered as described in \secref{xr_perception:texture_generation} with period $\lambda$ of \qty{2}{\mm}, but with different amplitudes $A$ to create different levels of roughness.
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Preliminary studies allowed us to determine a range of amplitudes that could be felt by the participants and were not too uncomfortable, and the reference texture was chosen to be the one with the middle amplitude.