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Fix ref warnings

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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}. %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}). %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]. %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. %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. %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. 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. 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. 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.