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检索条件"主题词=Human-centered computing"

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Prototyping a Virtual Agent for Pre-school English Teaching

Prototyping a Virtual Agent for Pre-school English Teaching

引用

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

作者： Sandoval, Eduardo Benitez Rojas, Diego Vazquez Cereceres, Clarissa A. Parada Rios, Alvaro Anzueto Barde, Amit Billinghurst, Mark Univ New South Wales Fac Arts Design & Architecture Sydney NSW Australia Inst Politecn Nacl UPIITA Mexico City DF Mexico Univ Auckland ECL Auckland New Zealand UniSA Adelaide SA Australia

ISBN: (纸本)9781665484022

This paper describes a case study and the insights gained from prototyping an Intelligent Virtual Agent (IVA) for English vocabulary building for Spanish-speaking preschool children. After an initial exploration to evaluate the feasibility of developing an IVA, we followed a human-centered Design (HCD) approach to create a prototype. We report on the multidisciplinary process used that incorporated two well-known educative concepts: gamification and story-telling as the main components for engagement. Our results suggest that a multidisciplinary approach to developing an educational IVA is effective. We report on the relevant aspects of the ideation and design processes that informed the vision and mission of the project.

关键词： human-centered computing Visualization Visualization techniques human-centered computing Visualization Visualization design and evaluation methods

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A Location-Triggered Augmented Reality Walking Tour Using Snap Spectacles 2021

A Location-Triggered Augmented Reality Walking Tour Using Sn...

引用

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

作者： Sanchawala, AadilMehdi Dimofte, Mara Feiner, Steven K. Columbia Univ Dept Comp Sci New York NY 10027 USA

ISBN: (纸本)9781665484022

We present an on-site 3D-animated audiovisual tour guide augmented reality application developed for Snap Spectacles 2021. The primary goal of this project is to explore how to use this experimental product to create an augmented reality tour guide. In addition, we present the design considerations for the user interface and the underlying system architecture. We illustrate the workflow of the tour application and discuss our experience working with Spectacles 2021 and its experimental API. We also present our design choices and directions for future work.

关键词： human-centered computing human Computer Interaction (HCI) Interaction paradigms Mixed / augmented reality computing methodologies Computer graphics Graphics systems and interfaces Mixed / augmented reality

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Lightweight Wearable AR System using Head-mounted Projector for Work Support 21

Lightweight Wearable AR System using Head-mounted Projector ...

引用

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

作者： Yuda, Haruki Limori, Masamichi Iriyama, Taishi Komuro, Takashi Saitama Univ Grad Sch Sci & Engn Saitama Japan

ISBN: (数字)9781665453653

ISBN: (纸本)9781665453653

In this paper, we propose a lightweight wearable AR system for work support in which a user mounts a projector and a monocular camera on his or her head. The system can present information in front of the user's line of sight by superimposing images on a surface in real space. The system uses monocular SLAM to estimate the pose of the user's head, and changes images depending on the head movement, enabling the fixation of virtual objects. We developed a prototype system in which a small projector and a camera are fixed to glasses. The total weight of the prototype system is 84 g, which is small and lightweight enough for work support. We confirmed that a virtual object was fixed on a real surface using the prototype system.

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

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Investigating The Effect of Direction on The Limits of Haptic Retargeting 21

Investigating The Effect of Direction on The Limits of Hapti...

引用

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

作者： Clarence, Aldrich Knibbe, Jarrod Cordeil, Maxime Wybrow, Michael Monash Univ Clayton Vic Australia Univ Melbourne Melbourne Vic Australia Univ Queensland Brisbane Qld Australia

ISBN: (数字)9781665453257

ISBN: (纸本)9781665453257

Haptic Retargeting enables spatially decoupled physical objects to provide haptic feedback for multiple virtual objects in Virtual Reality (VR). By decoupling the virtual hand from its real position, through Hand Redirection, multiple virtual objects can be mapped to a single physical proxy. However, redirection beyond a detectable level is disruptive to the user experience. The limits of haptic retargeting have mainly been explored in one primary direction-the user reaching forwards. We designed an experiment with participants performing reaching movements across 8 reaching directions in the horizontal plane, with a hand redirection of up to 30 degrees. We identify an overall haptic retargeting limit and find that a physical proxy can be remapped to virtual objects of up to 16.14 degrees away. We find a significant effect of reaching direction on the limit. In practice, however, these differences are small, measuring only a couple of degrees, translating to approximately 1cm across a 30cm reach. We argue that, while the psychology literature might suggest the need for specific directional limits and while we do find an effect of direction on retargeting limits, interaction designers can mitigate these requirements by applying slightly conservative global retargeting limits. Our contributions further the community's knowledge of both how to deploy haptic retargeting in interaction without compromising the user's experience and how visual and proprioceptive cues interact in peripersonal space in VR.

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

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X-Ray Device Positioning with Augmented Reality Visual Feedback

X-Ray Device Positioning with Augmented Reality Visual Feedb...

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

作者： Tehlan, Kartikay Winkler, Alexander Roth, Daniel Navab, Nassir Tech Univ Munich Munich Germany Friedrich Alexander Univ Erlangen Nurnberg Erlangen Germany Johns Hopkins Univ Baltimore MD 21218 USA

ISBN: (纸本)9781665484022

In minimally invasive surgeries one common way to verify progress is the use of an intraoperative X-ray device (due to its characteristic shape called a C-arm). Its control, however, remains challenging owing to its complex movements. We propose the use of an Augmented Reality Head-Mounted Display (AR-HMD) to let the surgeon choose a desired X-ray view interventionally providing the corresponding C-arm configuration as visual feedback. The study participants' feedback, despite being critical of the HMD hardware limitations, suggests an inclination towards using AR for orthopaedic surgeries on especially complex or unusual anatomies.

关键词： computing Methodologies Computer graphics Graphics Systems and Interfaces Mixed / Augmented Reality human-centered computing human Computer Interaction (HCI) Interaction Paradigms Mixed / Augmented Reality

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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 ...

引用

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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Lessons Learned from the Design and Evaluation of InterViewR: A Mixed-Reality Based Interview Training Simulation Platform for Individuals with Autism 46

Lessons Learned from the Design and Evaluation of InterViewR...

引用

46th Annual IEEE-Computer-Society International Computers, Software, and Applications Conference (COMPSAC) - Computers, Software, and Applications in an Uncertain World

作者： Dawson, Anais Ahmed, Shameem Sharmin, Moushumi Deneke, Wesley Western Washington Univ Comp Sci Dept Bellingham WA 98225 USA

ISBN: (纸本)9781665488105

As one of the most important and stressful steps towards gaining employment, job interviews are a social barrier that poses a unique challenge for individuals with Autism Spectrum Disorder (ASD). There are existing tools and in-person training available that show promise. However, these solutions are limited in the degree to which they can collect performance data, provide specific feedback, offer options to intelligently customize training, and simulate a variety of interviews in a realistic manner. InterViewR is a mixed reality job interview training simulator that addresses these shortcomings to reduce barriers in entering the workforce. The integration of Virtual Reality and wearable smart technology enables users to practice customizable interview simulations and receive both real-time and retrospective feedback. Findings are reported from a cognitive walkthrough (N=33) that highlights areas that need to be considered when designing such interview training platforms for individuals with autism.

关键词： human-centered computing accessibility virtual reality stress biofeedback autism spectrum disorder job interview training

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Context-Aware Support of Dexterity Skills in Cross-Reality Environments 21

Context-Aware Support of Dexterity Skills in Cross-Reality E...

引用

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

作者： Ceyssens, Jeroen Di Fiore, Fabian Luyten, Kris Hasselt Univ Flanders Make Expertise Ctr Digital Media Hasselt Belgium

ISBN: (数字)9781665453653

ISBN: (纸本)9781665453653

Within our work, we apply context-awareness to determine how AR/VR technology should adapt instructions based on the context to suit user needs. We focus on situations where the user must carry out a complex manual activity that requires additional information to be present during the activity to achieve the desired result. To this end, the emphasis is on activities that require fine-motor skills and in-depth expertise and training, for which XR is a powerful tool to support and guide users performing these tasks. The contexts we detect include user intentions, environmental conditions, and activity progressions. Our work builds on these contexts with the main focus on determining how XR should adapt for the end-user from a usability perspective. The feedback we request from ISMAR consists of input in detection, usability, and simulation categories, together with how to balance these categories to create real-time and user-friendly systems. The next steps of our work will consider how to content should adjust based on the cognitive load, activity space, and environmental conditions.

关键词： human-centered computing Interaction design Interaction design process and methods Activity centered design human-centered computing human computer interaction (HCI) Interaction paradigms Mixed / augmented reality

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A Cardboard-Based Virtual Reality Study on Self-Avatar Appearance and Breathing

A Cardboard-Based Virtual Reality Study on Self-Avatar Appea...

引用

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

作者： Cui, Dixuan Mousas, Christos Purdue Univ Dept Comp Graph Technol W Lafayette IN 47907 USA

ISBN: (纸本)9781665484022

Cardboard-based virtual reality is an affordable solution for experiencing virtual reality content. Particularly during the COVID-19 pandemic, several studies used cardboard-based virtual reality remotely to minimize viral spread. We conducted a study to explore the potentials of low-cost virtual reality on participants' sense of presence and body ownership illusion in our research lab, thereby providing a controlled research setting. Our 2 (Avatar: realistic vs. mannequin self-avatar) x 2 (Breathing;breathing vs. no breathing motion) study investigated presence and body ownership when participants were instructed to observe a virtual environment passively through a cardboard-based virtual reality application while being embodied as a self-avatar. Our study's results indicated that: (1) the mannequin self-avatar exerted a stronger effect on participants' presence;(2) younger participants who experienced the mannequin avatar reported stronger body ownership compared with older participants;and (3) while experiencing a mannequin avatar with no breathing motion, participants with prior VR experience reported higher body ownership illusion compared with participants with no prior VR experience. In this paper, we discuss our findings, as well as the study's limitations and future research directions.

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

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Effects of the Level of Detail on the Recognition of City Landmarks in Virtual Environments

Effects of the Level of Detail on the Recognition of City La...

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

作者： Doula, Achref Kaufmann, Philipp Guinea, Alejandro Sanchez Muehlhaeuser, Max Tech Univ Darmstadt Darmstadt Germany

ISBN: (纸本)9781665484022

The reconstruction of city landmarks is central to creating recognizable virtual environments representing real cities. Despite the recent advances, it is still not clear what level of detail (LOD) to adopt when reconstructing those landmarks for their correct recognition, and if particular architectural styles represent specific challenges in this respect. In this paper, we investigate the effect of LOD on landmark recognition, generally, and on some architectural styles, specifically. The results of our user study show that higher LOD lead to a better landmark identification. Particularly, Neoclassical-style buildings need more details to be individually distinguished from similar ones.

关键词： human-centered computing Empirical studies in visualization

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