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检索条件"主题词=Virtual reality Human-centered computing"

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Asymmetric VR Chores: A Social Presence Preliminary Study

Asymmetric VR Chores: A Social Presence Preliminary Study

引用

IEEE Conference on virtual reality and 3D User Interfaces (VR)

作者： Saunders, Stephen Uribe-Quevedo, Alvaro Sun, Winnie Horsburgh, Sheri Ontario Tech Univ Oshawa ON Canada Ontario Shores Ctr Mental Hlth Sci Whitby ON Canada

ISBN: (纸本)9798350374490;9798350374506

VR applications focused on daily activities for health care, focusing on either physical or cognitive interventions, continue to gain momentum as a result of consumer-level devices. However, interactions are mainly focused on single user experiences, with little research conducted on VR and asymmetric gameplay, which refers to the fact that players play the game using different media. This article presents a preliminary study focused on how the addition of asymmetry to a house chores VR game positively influences social presence when playing the game. The preliminary results indicate that the participants experienced high behavioral engagement when playing with another person.

关键词： human-centered computing human computer interaction Interaction paradigms virtual reality human-centered computing human computer interaction Interaction paradigms Collaborative interactions

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AIsop: Exploring Immersive VR Storytelling Leveraging Generative AI

AIsop: Exploring Immersive VR Storytelling Leveraging Genera...

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IEEE Conference on virtual reality and 3D User Interfaces (VR)

作者： Gatti, Elia Giunchi, Daniele Numan, Nels Steed, Anthony UCL London England

ISBN: (纸本)9798350374490;9798350374506

We introduce AIsop, a system that autonomously generates VR storytelling experiences using generative artificial intelligence (AI). AIsop crafts unique stories by leveraging state-of-the-art Large Language Models (LLMs) and employs Text-To-Speech (TTS) technology for narration. Further enriching the experience, a visual representation of the narrative is produced through a pipeline that pairs LLM-generated prompts with diffusion models, rendering visuals for clusters of sentences in the story. Our evaluation encompasses two distinct use cases: the narration of pre-existing content and the generation of entirely new narratives. AIsop highlights the myriad research prospects spanning its technical architecture and user engagement.

关键词： large language model VR storytelling generative AI human-centered computing virtual reality human-centered computing Natural language interfaces

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MemoryVR: Collecting and Sharing Memories in Personal virtual Museums

MemoryVR: Collecting and Sharing Memories in Personal Virtua...

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IEEE Conference on virtual reality and 3D User Interfaces (VR)

作者： Liang, Jiachen Li, Yue Wang, Xueqi Liang, Hai-Ning Xian Jiaotong Liverpool Univ Sch Adv Technol Xian Peoples R China

ISBN: (纸本)9798350374490;9798350374506

We present MemoryVR, a virtual museum system designed to preserve and share personal memories. This system enables users to create customized virtual museums within a spatial enclosure, providing an immersive and enriched way to experience personal memories. We invited participants to use MemoryVR to create their own personal virtual museums and visit those created by others. Results from evaluation studies showed a positive impact of MemoryVR on their experience of memories. Participants reported that their experiences within the personal virtual museums were fulfilling, invoking a sense of ritual, ownership, curiosity, and engagement.

关键词： human-centered computing human computer interaction (HCI) Interaction paradigms virtual reality human-centered computing human computer interaction (HCI) Empirical studies in HCI

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Evaluation of 3D reconstruction techniques for the blending of real and virtual environments

Evaluation of 3D reconstruction techniques for the blending ...

引用

IEEE Conference on virtual reality and 3D User Interfaces (VR)

作者： Pizzo, Marianna Viola, Eros Solari, Fabio Chessa, Manuela Univ Genoa Dept Informat Bioengn Robot & Syst Engn Genoa Italy

ISBN: (纸本)9798350374490;9798350374506

Interaction in immersive virtual reality can be enhanced by merging physical objects with virtual stimuli, thus creating extended reality scenarios. Such approaches could be exploited to implement physical obstacle avoidance and to provide the missing haptic feedback when touching, grasping, and manipulating objects. Effective solutions rely on the correct detection and tracking of the 6DOF pose of the objects and the accurate 3D reconstruction of the physical elements. Here, we focus on the latter aspect, analyzing different 3D reconstruction techniques to create and segment the meshes necessary to merge the physical objects with virtual counterparts. We consider six 3D reconstruction software and six different furnished rooms, analyzing the time necessary to create the 3D mesh from scratch, the reconstruction success rate, and the percentage of volume shift between the real objects and the reconstructed ones. The quantitative results show several off-the-shelf 3D reconstruction techniques that can be used as input for the considered extended reality system. Although fine 3D reconstruction and meshes are not necessary, the considered techniques can catch the sizes of the real objects in the scene and can be used to create virtual environments coherently aligned with the real ones.

关键词： human computer interaction (HCI) human computer interaction (HCI) human-centered computing Interaction paradigms Interaction paradigms Mixed / augmented reality virtual reality human-centered computing

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Uncovering Best Practices in Immersive Space to Think 22

Uncovering Best Practices in Immersive Space to Think

引用

22nd IEEE International Symposium on Mixed and Augmented reality (ISMAR)

作者： Davidson, Kylie Lisle, Lee Tahmid, Ibrahim A. Whitley, Kirsten North, Chris Bowman, Doug A. Virginia Tech Blacksburg VA 24061 USA US Dept Def Washington DC 20305 USA

ISBN: (纸本)9798350328387

As immersive analytics research becomes more popular, user studies have been aimed at evaluating the strategies and layouts of users' sensemaking during a single focused analysis task. However, approaches to sensemaking strategies and layouts are likely to change as users become more familiar/proficient with the immersive analytics tool. In our work, we build upon an existing immersive analytics approach-Immersive Space to Think-to understand how schemas and strategies for sensemaking change across multiple analysis tasks. We conducted a user study with 14 participants who completed three different sensemaking tasks during three separate sessions. We found significant differences in the use of space and strategies for sensemaking across these sessions and correlations between participants' strategies and the quality of their sensemaking. Using these findings, we propose guidelines for effective analysis approaches within immersive analytics systems for document-based sensemaking.

关键词： human-centered computing Visualization human computer interaction (HCI) human-centered computing Visualization virtual reality human-centered computing Visualization Information visualization human-centered computing Visualization Sensemaking

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Comparative Analysis of Artefact Interaction and Manipulation Techniques in VR Museums: A Study of Performance and User Experience 22

Comparative Analysis of Artefact Interaction and Manipulatio...

引用

22nd IEEE International Symposium on Mixed and Augmented reality (ISMAR)

作者： Wang, Yifan Li, Yue Liang, Hai-Ning Xian Jiaotong Liverpool Univ Sch Adv Technol Suzhou Peoples R China Xian Jiaotong Liverpool Univ Sch Adv Technol Dept Comp Suzhou Peoples R China

ISBN: (纸本)9798350328387

For museums in virtual reality (VR), various interaction and manipulation techniques could be employed for users to engage with artefact interactions. This study examined four combinations of interaction (controller-based and hand-tracking) and manipulation (direct and indirect) techniques, assessing user performance and experience with these interaction techniques in a virtual museum environment. We conducted a within-subjects experiment and asked participants to perform a series of transform manipulation tasks using the four techniques. Participants' task completion time was measured. They also provided feedback on acceptance, learnability, presence, sickness, and fatigue, and gave an overall ranking through post-experiment questionnaires and interviews. The results revealed that controller-based direct manipulation outperformed the other techniques in terms of task performance and user experience, with hand-tracking indirect manipulation being the least efficient and the least preferred option. The study offers insights for future research and development in refining interaction and manipulation techniques and designing more user-friendly VR museum experiences.

关键词： human-centered computing human computer interaction (HCI) Interaction paradigms virtual reality human-centered computing human computer interaction (HCI) Empirical studies in HCI human-centered computing human computer interaction (HCI) Interaction techniques Gestural input

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Examining the Fine Motor Control Ability of Linear Hand Movement in virtual reality 30

Examining the Fine Motor Control Ability of Linear Hand Move...

引用

30th IEEE Conference virtual reality and 3D User Interfaces (IEEE VR)

作者： Yi, Xin Wang, Xueyang Li, Jiaqi Li, Hewu Tsinghua Univ Zhongguancun Lab Beijing Peoples R China Tsinghua Univ Beijing Peoples R China

ISBN: (纸本)9798350348156

Linear hand movement in mid-air is one of the most fundamental interactions in virtual reality (e.g., when dragging/scaling/manipulating objects and drawing shapes). However, the lack of tactile feedback makes it difficult to precisely control the direction and amplitude of hand movement. In this paper, we conducted three user studies to progressively examine users' ability of fine motor control in 3D linear hand movement tasks. In Study 1, we examined participants' behavioural patterns when drawing straight lines in various directions and lengths, using both the hand and the controller. Results showed that the exhibited stroke length tended to be longer than perceived, regardless of the interaction tool. While displaying the trajectory could help reduce directional and length errors. In Study 2, we further tested the effect of different visual references and found that, compared with an empty room or cluttered scenarios, providing only a virtual table yielded higher input precision and user preference. In Study 3, we repeated Study 2 in real dragging and scaling tasks and verified the generalizability of the findings in terms of input error. Our core finding is that the user's hand moves significantly longer than the task length due to the underestimation of stroke length, yet the error of the Z-axis movement is smaller than that of the X-axis and the Y-axis, and a simple virtual desktop can effectively reduce errors.

关键词： human-centered computing human computer interaction (HCI) Interaction paradigms virtual reality human-centered computing human computer interaction (HCI) HCI design and evaluation methods User models

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Color calibration in virtual reality for Unity and Unreal

Color calibration in virtual reality for Unity and Unreal

引用

30th IEEE Conference virtual reality and 3D User Interfaces (IEEE VR)

作者： Diaz-Barrancas, Francisco Gil-Rodriguez, Raquel Aizenman, Avi Bayer, Florian Gegenfurtner, Karl Justus Liebig Univ Dept Psychol Giessen Germany

ISBN: (纸本)9798350348392

This work measures the relationship between RUB intensities and the reflected color for each color channel of the HTC Vive Pro Eye virtual reality (VR) headset. The study additionally measured the display spectra of the device and characterized how Unity and Unreal 3D rendering software influences chromatic behavior. The results were compared to measurements taken without rendering software to quantify the pure characteristics of display primaries. A methodology was proposed to carry out a color calibration customized to the type of material or graphics engine used for more accurate and realistic color representation in VR.

关键词： computing methodologies Computer graphics Graphics systems and interfaces virtual reality human-centered computing Visualization Visualization techniques Visualization design and evaluation methods

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Inducing Emotional Stress From The Intensive Care Context Using Storytelling In VR 29

Inducing Emotional Stress From The Intensive Care Context Us...

引用

IEEE Conference on virtual reality and 3D User Interfaces (IEEE VR)

作者： Weiss, Sebastian Busse, Steffen Heuten, Wilko OFFIS Inst Informat Technol Oldenburg Germany Carl von Ossietzky Univ Oldenburg Oldenburg Germany

ISBN: (纸本)9781665496179

Nurses in intensive care units are exposed to permanent stress. Emotional stress contributes to psycho-physiological exhaustion symptoms such as chronic sleep disturbances, restlessness or burnout, which negatively affects the quality of care and interaction with patients. A promising method for learning coping strategies to deal with stress is Stress Inoculation Training, which involves practicing stressors in a controlled environment at increasing intensity. In this work, using virtual reality, the stressor of having to comply with the patient's or family's wishes, even if one does not agree with them, was selected. The stressor was defined based on a literature review and interviews with experts which was then implemented in three intensity levels. In a Wizard-of-Oz trial, participants interacted with virtual characters using natural speech. The stress response of the induced stress was measured using objective (heart rate, time between R peaks, skin conductance, and respiratory rate) and subjective measures (Perceived Stress Questionnaire and a 7-point Likert item). While objective results do not show significant differences between intensity levels, a significant increase is detected in the subjective measures. We show that emotional stress can be induced by increasing the intensity of a stressor in VR using virtual characters.

关键词： human-centered computing User Studies human-centered computing virtual reality human-centered computing HCI theory, concepts and models

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Exploring and Selecting Supershapes in virtual reality with Line, Quad, and Cube Shaped Widgets 29

Exploring and Selecting Supershapes in Virtual Reality with ...

引用

IEEE Conference on virtual reality and 3D User Interfaces (IEEE VR)

作者： Nicolau, Francisco Gielis, Johan Simeone, Adalberto L. Lopes, Daniel Simoes Univ Lisbon Inst Super Tecn Lisbon Portugal Univ Antwerp Dept Biosci Engn Antwerp Belgium Katholieke Univ Leuven Dept Comp Sci Leuven Belgium Univ Lisbon Inst Super Tecn INESC ID Lisbon Portugal

ISBN: (纸本)9781665496179

Supershapes are used in Parametric Design to model, literally, thousands of natural and man-made shapes with a single 6 parameter formula. However, users are left to probe such a rich yet dense collection of supershapes using a set of independent 1-D sliders. Some of the formula's parameters are non-linear in nature, making them particularly difficult to grasp with conventional 1-D sliders alone. VR appears as a promising setting for Parametric Design with supershapes since it empowers users with more natural visual inspection and shape browsing techniques, with multiple solutions being displayed at once and the possibility to design more interesting forms of slider interaction. In this work, we propose VR shape widgets that allow users to probe and select supershapes from a multitude of solutions. Our designs take leverage on thumbnails, mini-maps, haptic feedback and spatial interaction, while supporting 1-D, 2-D and 3-D supershape parameter spaces. We conducted a user study (N = 18) and found that VR shape widgets are effective, more efficient, and natural than conventional VR 1-D sliders while also usable for users without prior knowledge on supershapes. We also found that the proposed VR widgets provide a quick overview of the main supershapes, and users can easily reach the desired solution without having to perform fine-grain handle manipulations.

关键词： human-centered computing User interface design human-centered computing virtual reality human-centered computing Graphical user interfaces

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