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Counting on AR: EEG responses to incongruent information with real-world context

computers in Biology and Medicine 2025年 185卷 109483-109483页

作者： Wimmer, Michael Pepicelli, Alex Volmer, Ben ElSayed, Neven Cunningham, Andrew Thomas, Bruce H. Müller-Putz, Gernot R. Veas, Eduardo E. Know Center Research GmbH Graz Austria Institute of Neural Engineering Graz University of Technology Graz Austria Wearable Computer Lab University of South Australia AdelaideSA Australia BioTechMed Graz Austria Institute of Interactive Systems and Data Science Graz University of Technology Graz Austria

Augmented Reality (AR) technologies enhance the real world by integrating contextual digital information about physical entities. However, inconsistencies between physical reality and digital augmentations, which may arise from errors in the visualized information or the user's mental context, can considerably impact user experience. This work characterizes the brain dynamics associated with processing incongruent information within an AR environment. To study these effects, we designed an interactive paradigm featuring the manipulation of a Rubik's cube serving as a physical referent. Congruent and incongruent information regarding the cube's current status was presented via symbolic (digits) and non-symbolic (graphs) stimuli, thus examining the impact of different means of data representation. The analysis of electroencephalographic signals from 19 participants revealed the presence of centro-parietal N400 and P600 components following the processing of incongruent information, with significantly increased latencies for non-symbolic stimuli. Additionally, we explored the feasibility of exploiting incongruency effects for brain-computer interfaces. Hence, we implemented decoders using linear discriminant analysis, support vector machines, and EEGNet, achieving comparable performances with all methods. Therefore, this work contributes to the design of adaptive AR systems by demonstrating that above-chance detection of incongruent information based on physiological signals is feasible. The successful decoding of incongruency-induced modulations can inform systems about the current mental state of users without making it explicit, aiming for more coherent and contextually appropriate AR interactions. © 2024

关键词： Interfaces (computer)

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Strollytelling: Coupling Animation with Physical Locomotion to Explore Immersive Data Stories 25

Strollytelling: Coupling Animation with Physical Locomotion ...

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Proceedings of the 2025 CHI Conference on Human Factors in Computing Systems

作者： Radhika Pankaj Jain Adam Drogemuller Kadek Ananta Satriadi Ross Smith Andrew Cunningham IVE University of South Australia Adelaide South Australia Australia IVE University of South Australia Mawson Lakes South Australia Australia Monash University Melbourne Australia Wearable Computer Lab University of South Australia Mawson Lakes SA Australia University of South Australia Adelaide Australia

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Continuous Dial User Interaction to Reduce Task Complexity in Designing Physical User Interfaces in Spatial Augmented Reality 27

Continuous Dial User Interaction to Reduce Task Complexity i...

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27th International Conference on Artificial Reality and Telexistence and 22nd Eurographics Symposium on Virtual Environments, ICAT-EGVE 2017

作者： Stone, D. Thomas, B.H. University of South Australia Wearable Computer Lab

ISBN: (纸本)9783038680529

This paper presents an investigation into the use of continuous physical dial interaction to specify the placement of controls on designs of physical interfaces. The designs are projected on white substrates with Spatial Augmented Reality technology. The inspiration is direct physical interaction is more intuitive to the designer than the traditional CAD-based specification approach. The paper presents our initial Spatial Augmented Reality prototype. © 2017 The Author(s) Eurographics Proceedings © 2017 The Eurographics Association.

关键词： computer aided design

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MaskWarp: Visuo-Haptic Illusions in Mixed Reality using Real-time Video Inpainting

MaskWarp: Visuo-Haptic Illusions in Mixed Reality using Real...

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2023 IEEE International Symposium on Mixed and Augmented Reality Adjunct, ISMAR-Adjunct 2023

作者： Matthews, Brandon J. Reichherzer, Carolin Thomas, Bruce H. Smith, Ross T. University of South Australia Wearable Computer Lab Australia

ISBN: (纸本)9798350328912

We present MaskWarp, a novel approach to enable haptic retargeting and other visuo-haptic illusions in video see-through (VST) mixed reality (MR). Virtual reality provides a unique ability to shift where users perceive their virtual hands. However, in VST MR, users can see their real hands through a video feed, breaking the illusion. MaskWarp uses real-time video inpainting to remove the physical hand from the video, which is then replaced with a virtual hand. The virtual hand position can then be warped for visuo-haptic illusions. We use haptic retargeting to demonstrate this technique in an engaging cups and ball game. © 2023 IEEE.

关键词： Mixed reality

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HORUS EYE: See the Invisible Bird and Snake Vision for Augmented Reality Information Visualization 15

HORUS EYE: See the Invisible Bird and Snake Vision for Augme...

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15th Adjunct IEEE International Symposium on Mixed and Augmented Reality, ISMAR-Adjunct 2016

作者： Elsayed, Neven A. M. Smith, Ross T. Thomas, Bruce H. Wearable Computer Lab University of South Australia Australia

ISBN: (纸本)9781509037407

This paper presents a novel technique, called Horus Eye, for augmented reality information visualization. 'Horus', the famous deity in ancient Egyptian mythology, inspires this visualization technique, which is designed to simulate bird and snake vision to highlight data of interest. The contribution of this approach is the merging of information with the real scene, leveraging the real world context to interpret the data. Our technique is a context-based interactive visualization, controlled by users' queries. This paper presents a work in progress with use cases and two adaptations of Horus Eye. © 2016 IEEE.

关键词： Visualization

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Performance improvement using data tags for handheld spatial augmented reality 14

Performance improvement using data tags for handheld spatial...

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20th ACM Symposium on Virtual Reality Software and Technology, VRST 2014

作者： Irlitti, Andrew Von Itzstein, Stewart Smith, Ross T. Thomas, Bruce H. Wearable Computer Lab University of South Australia Australia

ISBN: (纸本)9781450332538

Mobile devices such as some recent phones are now fitted with projection capabilities that support Spatial Augmented Reality (SAR) and require investigation to uncover new interaction possibilities. This paper presents a study measuring user performance in a search and select task using a tracked handheld projector and data tags, a 3D physical cue. This physical cue is used to mark the location of hidden SAR information. The experiment required participants to search for virtual symbols presented on two 5ft, multi-sided control panels. Two methods of presenting AR information were employed, SAR alone and SAR with the inclusion of physical cues to indicate the location of the information. The results showed that attaching data tags, compared to virtual content alone lowered the overall task completion time and reduced handheld projector movement. Subjectively, participants also preferred the combination of virtual data with data tags across both task variations. Copyright © 2014 by the Association for Computing Machinery, Inc (ACM).

关键词： Augmented reality

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Immersive Visualisation of Geo-Temporal Narratives in Law Enforcement

Immersive Visualisation of Geo-Temporal Narratives in Law En...

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2018 International Symposium on Big Data Visual and Immersive Analytics, BDVA 2018

作者： Cunningham, Andrew Walsh, James Thomas, Bruce Wearable Computer Lab University of South Australia Adelaide Australia

ISBN: (纸本)9781538691946

Recent advances in virtual reality technologies enable high-fidelity exploration of data in immersive environments. This is advantageous for professional applications of high-dimensional datasets (such as geo-temporal narratives), as we can leverage all three spatial axes while immersing the user in the information itself. Geo-temporal narratives tell a story of entities, their movements, and as a result, their potential relationships, thereby defining the who, what, where, and when that define a story;everything except the why. This paper describes an immersive virtual reality system we have developed to convey these narratives, specifically focusing on the law enforcement domain. The system lets users not only view who was where and when, but also view explicit and implicit relationships between entities, repeated visits to recurring locations, as well as the crucial descriptive information supporting the why. We present the results of an expert review of the system from federal law enforcement and defence agencies that validate our approach. © 2018 IEEE.

关键词： Visualization

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Design and Impressions of a Multi-User Tabletop Interaction Device

Design and Impressions of a Multi-User Tabletop Interaction ...

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11th Australasian User Interface Conference, AUIC 2010

作者： Cunningham, Andrew Close, Ben Thomas, Bruce Hutterer, Peter Wearable Computer Lab School of Computer and Information Science University of South Australia Australia

ISBN: (纸本)9781920682873

TableMouse is a cursor manipulation device designed specifically for multiple users interacting on large tabletop surface. TableMouse tracks position, height, orientation, button state, and unique identification. It is designed using infrared light emitting diodes and computer vision to perform device tracking and identification. This paper explores the functional design of such a device. Insights into the inherent features enabled by this functionality - out of arms reach interaction, collaborative interaction - are described. The architecture, vision analysis process, and issues to consider are described. Finally two example applications utilising the TableMouse are described. © 2010, Australian computer Society, Inc.

关键词： Cscw Input devices Tabletop computing

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Augmenting Image Plane AR 3D Interactions for wearable computers

Augmenting Image Plane AR 3D Interactions for Wearable Compu...

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10th Australasian User Interface Conference, AUIC 2009

作者： Hoang, Thuong N. Porter, Shane R. Thomas, Bruce H. Wearable Computer Lab School of Computer and Information Science University of South Australia Australia

ISBN: (纸本)9781920682743

This paper presents a set of large object manipulation techniques implemented in a wearable augmented reality computer system that are optimised for the outdoor setting. These techniques supplement the current image plane approach, to provide a comprehensive solution to 3D object manipulation in an augmented reality outdoor environment. The three extended manipulation techniques, Revolve, Xscale, and Ground plane translation, are focused on using what we determined to be the best coordinate system for object rotation, scaling and translation. This paper goes on to present the generalised plane technique for the constrained translation of graphical objects on arbitrary planes to enable more complex translation operations. The paper presents the techniques from both the user interface and software development perspectives. © 2009, Australian computer Society, Inc.

关键词： Augmented reality

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Tangible Braille Plot: Tangibly Exploring Geo-Temporal Data in Virtual Reality

Tangible Braille Plot: Tangibly Exploring Geo-Temporal Data ...

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2018 International Symposium on Big Data Visual and Immersive Analytics, BDVA 2018

作者： Walsh, James Cunningham, Andrew Smith, Ross Thomas, Bruce Wearable Computer Lab University of South Australia AdelaideSA Australia

ISBN: (纸本)9781538691946

Despite the resurgence of virtual reality (VR), the primary method of interacting with the environment is using generic controllers. Given the often-purpose-built nature of applications within VR, this is surprising, as despite the effort put into the design of the application itself, the same attention is not paid to the input control. This is despite the advantages that tangible interfaces have for user understanding, especially in the context of visualization, where user understanding is paramount. This paper presents the adaptation of a previous 2D temporal-geospatial visualization into VR, and more importantly, describes the development of a novel 8DOF Tangible User Interface developed to support the exploration of that data. For our application, this centers around the exploration of geospatial data to explore colocation and divergence of entities, but could easily be extended to other domains. We present our novel controller as an example of the benefits of the utilization of purpose built physical controllers as a first-tier method of enabling immersive analytics. We describe the immersive system and controller, followed by an example use case and other applications encouraging further development of novel tangibles as a key component of immersive data analytics. © 2018 IEEE.

关键词： Virtual reality

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