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检索条件"主题词=Human-centered computing"

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Virtual humans with Pets and Robots: Exploring the Influence of Social Priming on One's Perception of a Virtual human 29

Virtual Humans with Pets and Robots: Exploring the Influence...

引用

IEEE Conference on Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Norouzi, Nahal Gottsacker, Matthew Bruder, Gerd Wisniewski, Pamela J. Bailenson, Jeremy Welch, Greg Univ Cent Florida Orlando FL 32816 USA Stanford Univ Stanford CA 94305 USA

ISBN: (纸本)9781665496179

Social priming is the idea that observations of a virtual human (VH) engaged in short social interactions with a real or virtual human bystander can positively influence users' subsequent interactions with that VH. In this paper we investigate the question of whether the positive effects of social priming are limited to interactions with humanoid entities. For instance, virtual dogs offer an attractive candidate for non-humanoid entities, as previous research suggests multiple positive effects. In particular, real human dog owners receive more positive attention from strangers than non-dog owners. To examine the influence of such social priming we carried out a human-subjects experiment with four conditions: three social priming conditions where a participant initially observed a VH interacting with one of three virtual entities (another VH, a virtual pet dog, or a virtual personal robot), and a non-social priming condition where a VH (alone) was intently looking at her phone as if reading something. We recruited 24 participants and conducted a mixed-methods analysis. We found that a VH's prior social interactions with another VH and a virtual dog significantly increased participants' perceptions of the VHs' affective attraction. Also, participants felt more inclined to interact with the VH in the future in all of the social priming conditions. Qualitatively, we found that the social priming conditions resulted in a more positive user experience than the non-social priming condition. Also, the virtual dog and the virtual robot were perceived as a source of positive surprise, with participants appreciating the non-humanoid interactions for various reasons, such as the avoidance of social anxieties sometimes associated with humans.

关键词： human-centered computing Interaction paradigms Mixed / augmented reality human-centered computing human computer interaction (HCI) HCI design and evaluation methods User studies Computer graphics Graphics systems and interfaces Mixed / augmented reality

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Effects of Rendering Styles of a Virtual Character on Avoidance Movement Behavior 21

Effects of Rendering Styles of a Virtual Character on Avoida...

引用

21st IEEE International Symposium on Mixed and Augmented Reality (ISMAR)

作者： Nelson, Michael G. Koilias, Alexandros Anagnostopoulos, Christos-Nikolaos Mousas, Christos Purdue Univ Dept Comp Graph Technol W Lafayette IN 47907 USA Univ Aegean Dept Cultural Technol & Commun Mitilini 81100 Greece

ISBN: (数字)9781665453653

ISBN: (纸本)9781665453653

Avoidance movements between humans performing locomotive tasks and virtual characters represent typical interactions in immersive virtual environments. When performing these avoidance maneuvers, decisions are based on several factors, including self-presence and the perception of other virtual individuals. However, the impact of visual information on collision-free interactions is not yet fully understood. In this study, we aim to manipulate how the appearance of virtual characters is represented using five different rendering styles (realistic, toon, creepy, scary, and robot) to understand how alternate appearances could potentially affect the avoidance movement behavior of participants. To gather avoidance behavior data, 24 healthy participants performed a two-trial locomotive task toward a target in a virtual environment. Our results indicated that eerie rendering styles affected trajectory length, duration, speed, minimum distance, and side-by-side distance measurements. Additionally, most participants maintained a minimum distance behind the virtual characters and avoided them by keeping to their left side in all examined conditions. We posit that the presented findings contribute toward a fuller understanding of the effects of the appearance of virtual characters on avoidance movement behavior in room-scale virtual environments.

关键词： human-centered computing human computer interaction (HCI) Interaction paradigms Virtual reality

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Designing a Topic-Based Literature Exploration Tool in AR - An exploratory study for neuroscience 21

Designing a Topic-Based Literature Exploration Tool in AR - ...

引用

21st IEEE International Symposium on Mixed and Augmented Reality (ISMAR)

作者： Tanhaei, Ghazaleh Troost, Ivar Hardman, Lynda Hurst, Wolfgang Univ Utrecht Utrecht Netherlands CWI Amsterdam Netherlands

ISBN: (数字)9781665453653

ISBN: (纸本)9781665453653

The large and increasing amount of scientific literature makes it difficult for researchers to analyse and understand relations between topics even in their specific sub-field. Neuroscience researchers are interested in relations between, for example, anatomical regions of the brain and the diseases that affect them. To explore relations in the extensive body of literature, using the topics themselves rather than individual articles, can provide a higher-level approach. We have created a prototype interactive AR environment to learn more about how topic-based literature browsing might aid researchers in analysing and understanding relations between topics. Given the three-dimensional nature of the brain, we postulate that visualizing neuroscience topics in Augmented Reality would support the exploration of relations between them and thus improve and extend existing literature exploration workflows. We follow a user-centered approach to identify visualization and interaction design requirements. Using an existing analysis of tens of thousands of neuroscience papers, we designed an interactive AR environment to support researchers in finding relations between brain regions and brain diseases that integrates with existing literature review practices. We carried out two qualitative evaluations to verify our design, first with eight neuroscience students as domain experts and then with seven experienced researchers as literature exploration experts. Our analysis of participants' feedback shows that visualizing topics and their relations in the immersive AR environment is clear, understandable and helpful for topic-based literature exploration, specifically, between brain regions and brain diseases. Our AR literature exploration tool has the potential to be used by neuroscientists in their routine literature reviews.

关键词： human-centered computing Visualization systems and tools Immersive Analytics Augmented Reality

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Evaluating the Object-centered User Interface in Head-Worn Mixed Reality Environment 21

Evaluating the Object-Centered User Interface in Head-Worn M...

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21st IEEE International Symposium on Mixed and Augmented Reality (ISMAR)

作者： Li, Yihan Hu, Yong Wang, Zidan Shen, Xukun Beihang Univ Sch New Media Art & Design Beijing Peoples R China Beihang Univ State Key Lab Virtual Real Technol & Syst Beijing Peoples R China Beihang Univ Yunnan Innovat Inst Beijing Peoples R China

ISBN: (数字)9781665453257

ISBN: (纸本)9781665453257

User interface (UI) in head-worn mixed reality (MR) can be divided into two categories: user-centered and object-centered. Many studies have focused on user-centered UI, but few have explored object-centered UI. In this research, we explored the design of object-centered UI in head-worn MR environment. First, (b) we proposed three design considerations for object-centered UI in head-worn MR environment, and then verified them through two user studies with four UIs, where one is pure object-centered UI, one is pure user-centered UI, the others are hybrid UIs. In the first study, we conducted a user experience (UX) research on the access comfort, convenience and unobstructed sight degree of each UI, and demonstrated users' preferences for the object-centered UI. In the second study, we designed a real application scenario to further evaluate the design considerations in a complex MR environment, and assessed its usability. We found positive user experience qualities of object-centered UI. Finally, we summarized four design recommendations, which could guide the UI design for the interaction with real-world objects in the future of everyday life with head-worn MR.

关键词： human-centered computing Mixed / augmented reality User interface design

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Design and Evaluation of Travel and Orientation Techniques for Desk VR 29

Design and Evaluation of Travel and Orientation Techniques f...

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IEEE Conference on Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Amaro, Guilherme Mendes, Daniel Rodrigues, Rui Univ Porto INESC TEC Fac Engn Porto Portugal

ISBN: (纸本)9781665496179

Typical VR interactions can be tiring, including standing up, walking, and mid-air gestures. Such interactions result in decreased comfort and session duration compared with traditional non-VR interfaces, which may, in turn, reduce productivity. Nevertheless, current approaches often neglect this aspect, making the VR experience not as promising as it can be. As we see it, desk VR experiences provide the convenience and comfort of a desktop experience and the benefits of VR immersion, being a good compromise between the overall experience and ergonomics. In this work, we explore navigation techniques targeted at desk VR users, using both controllers and a large multi-touch surface. We address travel and orientation techniques independently, considering only continuous approaches for travel as these are better suited for exploration and both continuous and discrete approaches for orientation. Results revealed advantages for a continuous controller-based travel method and a trend for a dragging-based orientation technique. Also, we identified possible trends towards task focus affecting overall cybersickness symptomatology.

关键词： human-centered computing human computer interaction (HCI) Interaction techniques computing methodologies Computer graphics Graphics systems and interfaces Virtual reality

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Demonstration of Trajectory Presentation of Conducting Motions Using Tactile Sensation for Visually Impaired 21

Demonstration of Trajectory Presentation of Conducting Motio...

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21st IEEE International Symposium on Mixed and Augmented Reality (ISMAR)

作者： Ueda, Yuto Sugiura, Yuta Keio Univ Tokyo Japan

ISBN: (数字)9781665453653

ISBN: (纸本)9781665453653

In this demonstration, we show a method of presenting conducting motions by tactile presentation using vibration actuators. The purpose is to support visually impaired people who have difficulty participating in orchestral or other performance activities by presenting the trajectory of conducting motions. This demonstration explores new possibilities of augmented reality using tactile apparent movement.

关键词： human-centered computing human-centered computing human computer interaction (HCI)

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FroggyHand: A Gesture Based Control System for Omni-Directional Projections 22

FroggyHand: A Gesture Based Control System for Omni-Directio...

引用

Augmented humans Conference (AHs)

作者： Hoffard, Jana Miyafuji, Shio Pardomuan, Jefferson Sato, Toshiki Koike, Hideki Tokyo Inst Technol Tokyo Japan Japan Adv Inst Sci & Technol Nomi Ishikawa Japan

ISBN: (纸本)9781450396325

We would like to introduce FroggyHand, a novel interactive display which projects images onto a webbed skin between the user's fingers. Applications connected to these images are then activated via hand tracking and gesture recognition. We present the implementation steps as well as small, prototype applications and discuss future plans.

关键词： human-centered computing human Computer Interaction (HCI) HCI design and evaluation methods Augmented Reality

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How Late is Too Late? Effects of Network Latency on Audio-Visual Perception During AR Remote Musical Collaboration

How Late is Too Late? Effects of Network Latency on Audio-Vi...

引用

IEEE Conference on Virtual Reality and 3D User Interfaces (IEEE VR)

作者： Hopkins, Torin Weng, Suibi Che-Chuan Vanukuru, Rishi Wenzel, Emma Banic, Amy Do, Ellen Yi-Luen Univ Colorado ATLAS Inst Boulder CO 80309 USA Univ Wyoming Interact Real Lab Laramie WY 82071 USA

ISBN: (纸本)9781665484022

Networked Musical Collaboration requires near-instantaneous network transmission for successful real-time collaboration. We studied the way changes in network latency affect participants' auditory and visual perception in latency detection, as well as latency tolerance in AR. Twenty-four participants were asked to play a hand drum with a prerecorded remote musician rendered as an avatar in AR at different levels of audio-visual latency. We analyzed the subjective responses of the participants from each session. Results suggest a minimum noticeable delay value between 160 milliseconds (ms) and 320 ms, as well as no upper limit to audio-visual delay tolerance.

关键词： human-centered computing Interaction paradigms Mixed / augmented reality human-centered computing Interaction paradigms Collaborative Interaction Applied computing Sound and music computing

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Gait Differences in the Real World and Virtual Reality: The Effect of Prior Virtual Reality Experience 21

Gait Differences in the Real World and Virtual Reality: The ...

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21st IEEE International Symposium on Mixed and Augmented Reality (ISMAR)

作者： Nasiri, Moloud Anaraky, Reza Ghaiumy Babu, Sabarish V. Robb, Andrew Clemson Univ Sch Comp Clemson SC 29631 USA

ISBN: (数字)9781665453257

ISBN: (纸本)9781665453257

Walking through immersive virtual environments is one of the important parts of Virtual Reality (VR) applications. Prior research has established that users' gait in virtual and real environments differs;however, little research has evaluated how users' gait differs as users gain more experience with VR. We conducted experiments measuring novice and experienced subjects' gait parameters in VR and real environments. Results showed that subjects' performance in VR and Real World was more similar in the last trials than in the first trials;their walking dissimilarity in the start trials diminished by walking more trials. We found trial as a significant variable affecting the walking speed, step length, and trunk angle for both groups of users. While the main effect of expertise was not observed, an interaction effect between expertise and the trial number was shown. Trunk angle increased over time for novices but decreased for experts.

关键词： human-centered computing human computer interaction (HCI) HCI design and evaluation methods User studies

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Arrow, Bezier Curve, or Halos? - Comparing 3D Out-of-View Object Visualization Techniques for Handheld Augmented Reality 21

Arrow, Bezier Curve, or Halos? - Comparing 3D Out-of-View Ob...

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21st IEEE International Symposium on Mixed and Augmented Reality (ISMAR)

作者： Wieland, Jonathan Garcia, Rudolf C. Hegemann Reiterer, Harald Feuchtner, Tiare Univ Konstanz HCI Grp Constance Germany Aarhus Univ Aarhus Denmark

ISBN: (数字)9781665453257

ISBN: (纸本)9781665453257

Handheld augmented reality (AR) applications allow users to interact with their virtually augmented environment on the screen of their tablet or smartphone by simply pointing its camera at nearby objects or "points of interest" (POIs). However, this often requires users to carefully scan their surroundings in search of POIs that are out of view. Proposed 2D guides for out-of-view POIs can, unfortunately, be ambiguous due to the projection of a 3D position to 2D screen space. We address this by using 3D visualizations that directly encode the POI's 3D direction and distance. Based on related work, we implemented three such visualization techniques: (1) 3D Arrow, (2) 3D Bezier Curve, and (3) 3D Halos. We confirmed the applicability of these three techniques in a case study and then compared them in a user study, evaluating performance, workload, and user experience. Participants performed best using 3D Arrow, while surprisingly, 3D Halos led to poor results. We discuss the design implications of these results that can inform future 3D out-of-view object visualization techniques.

关键词： human-centered computing human computer interaction (HCI) Interaction paradigms Mixed / Augmented Reality human-centered computing Visualization Visualization techniques

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