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Erwan Normand
2024-10-14 16:07:13 +02:00
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1-background/introduction/introduction.tex
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@@ -15,7 +15,7 @@ Our goal is to achieve a more plausible and coherent perception, as well as a mo
\subsectionstarbookmark{Hand Interaction with Everyday Objects}
In daily life, \textbf{we simultaneously look at, touch and manipulate the everyday objects} around us without even thinking about it.
Many of these object properties can be perceived in a complementary way through all our sensory modalities, such as their shape, size or texture \cite{baumgartner2013visual}.
Many of these object properties can be perceived in a complementary way through all our sensory modalities, such as their shape, size or material \cite{baumgartner2013visual}.
Vision often precedes touch, enabling us to anticipate the tactile sensations we will feel when touching the object \cite{yanagisawa2015effects}, \eg hardness or texture, and even to predict properties that we cannot see, \eg weight or temperature.
Information from different sensory sources can be complementary, redundant or contradictory \cite{ernst2004merging}.
This is why we sometimes want to touch an object to check one of its properties that we have seen and to compare or confront our visual and tactile sensations.
@@ -217,7 +217,7 @@ Wearable haptic devices have proven to be effective in altering the perception o
%It is achieved by placing the haptic actuator close to the fingertip, to let it free to touch the surface, and rendering tactile stimuli timely synchronised with the finger movement.
%It enables rich haptic feedback as the combination of kinesthetic sensation from the real and cutaneous sensation from the actuator.
However, wearable haptic augmentations with \AR have been little explored, as well as the visuo-haptic augmentation of texture.
Texture is indeed one of the most fundamental perceived property of a surface's material \cite{hollins1993perceptual,okamoto2013psychophysical}, perceived equally well by both sight and touch \cite{bergmanntiest2007haptic,baumgartner2013visual}, and one of the most studied haptic (only, without visual) augmentation \cite{unger2011roughness,culbertson2014modeling,strohmeier2017generating}.
Texture is indeed one of the most fundamental perceived property of a surface's material \cite{hollins1993perceptual,okamoto2013psychophysical}, perceived equally well by both sight and touch \cite{bergmanntiest2007haptic,baumgartner2013visual}, and one of the most studied haptic (only, without visual) augmentation \cite{unger2011roughness,culbertson2014modeling,asano2015vibrotactile,strohmeier2017generating,friesen2024perceived}.
Being able to coherently substitute the visuo-haptic texture of a surface directly touched by a finger is an important step towards \AR capable of visually and haptically augmenting the \RE of a user in a plausible way.
For this first axis of research, we propose to design and evaluate the \textbf{perception of wearable virtual visuo-haptic textures augmenting real surfaces}. %, using an immersive \AR headset and a wearable vibrotactile device.
To this end, we (1) design a system for rendering wearable visuo-haptic texture augmentations, to (2) evaluate how the perception of haptic texture augmentations is affected by the visual feedback of the virtual hand and the environment, and (3) investigate the perception of co-localized visuo-haptic texture augmentations.