Fix acronyms

2-perception/ar-textures/1-introduction.tex

@@ -18,16 +18,16 @@ Worn on the finger, but not directly on the fingertip to keep it free to interac
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 However, the use of wearable haptic devices has been little explored in Augmented Reality (AR), where visual virtual content is integrated into the real-world environment, especially for augmenting texture sensations \cite{punpongsanon2015softar,maisto2017evaluation,meli2018combining,chan2021hasti,teng2021touch,fradin2023humans}.
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-A key difference in AR compared to VR is that the user can still see the real-world surroundings, including their hands, the augmented tangible objects and the worn haptic devices.
+A key difference in \AR compared to \VR is that the user can still see the real-world surroundings, including their hands, the augmented tangible objects and the worn haptic devices.
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-One additional issue of current AR systems is their visual display limitations, or virtual content that may not be seen as consistent with the real world \cite{kim2018revisiting,macedo2023occlusion}.
+One additional issue of current \AR systems is their visual display limitations, or virtual content that may not be seen as consistent with the real world \cite{kim2018revisiting,macedo2023occlusion}.
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 These two factors have been shown to influence the perception of haptic stiffness rendering \cite{knorlein2009influence,gaffary2017ar}.
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-It remains to be investigated whether simultaneous and co-localized visual and haptic texture augmentation of tangible surfaces in AR can be perceived in a coherent and realistic manner, and to what extent each sensory modality would contribute to the overall perception of the augmented texture.
+It remains to be investigated whether simultaneous and co-localized visual and haptic texture augmentation of tangible surfaces in \AR can be perceived in a coherent and realistic manner, and to what extent each sensory modality would contribute to the overall perception of the augmented texture.
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-Being able to coherently substitute the visuo-haptic texture of an everyday surface directly touched by a finger is an important step towards new AR applications capable of visually and haptically augmenting the real environment of a user in a plausible way.
+Being able to coherently substitute the visuo-haptic texture of an everyday surface directly touched by a finger is an important step towards new \AR applications capable of visually and haptically augmenting the real environment of a user in a plausible way.
 
-In this paper, we investigate how users perceive a tangible surface touched with the index finger when it is augmented with a visuo-haptic roughness texture using immersive optical see-through AR (OST-AR) and wearable vibrotactile stimuli provided on the index.
+In this paper, we investigate how users perceive a tangible surface touched with the index finger when it is augmented with a visuo-haptic roughness texture using immersive optical see-through \AR (OST-AR) and wearable vibrotactile stimuli provided on the index.
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 In a user study, twenty participants freely explored and evaluated the coherence, realism and roughness of the combination of nine representative pairs of visuo-haptic texture augmentations (\figref{setup}, left) from the HaTT database \cite{culbertson2014one}.