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检索条件"主题词=Human-centered computing"

共 2020 条记录，以下是931-940 订阅

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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...

引用

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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In-Place Gestures Classification via Long-term Memory Augmented Network 21

In-Place Gestures Classification via Long-term Memory Augmen...

引用

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

作者： Zhao, Lizhi Lu, Xuequan Bao, Qianyue Wang, Meili Northwest A&F Univ Xianyang Peoples R China Deakin Univ Geelong Vic Australia Xidian Univ Xian Shaanxi Peoples R China Minist Agr Key Lab Agr Internet Things Yangling 712100 Shaanxi Peoples R China Shaanxi Key Lab Agr Informat Percept & Intelligen Yangling 712100 Shaanxi Peoples R China

ISBN: (数字)9781665453257

ISBN: (纸本)9781665453257

In-place gesture-based virtual locomotion techniques enable users to control their viewpoint and intuitively move in the 3D virtual environment. A key research problem is to accurately and quickly recognize in-place gestures, since they can trigger specific movements of virtual viewpoints and enhance user experience. However, to achieve real-time experience, only short-term sensor sequence data (up to about 300ms, 6 to 10 frames) can be taken as input, which actually affects the classification performance due to limited spatio-temporal information. In this paper, we propose a novel long-term memory augmented network for in-place gestures classification. It takes as input both short-term gesture sequence samples and their corresponding long-term sequence samples that provide extra relevant spatio-temporal information in the training phase. We store long-term sequence features with an external memory queue. In addition, we design a memory augmented loss to help cluster features of the same class and push apart features from different classes, thus enabling our memory queue to memorize more relevant long-term sequence features. In the inference phase, we input only short-term sequence samples to recall the stored features accordingly, and fuse them together to predict the gesture class. We create a large-scale in-place gestures dataset from 25 participants with 11 gestures. Our method achieves a promising accuracy of 95.1% with a latency of 192ms, and an accuracy of 97.3% with a latency of 312ms, and is demonstrated to be superior to recent in-place gesture classification techniques. User study also validates our approach. Our source code and dataset will be made available to the community.

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

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The Effect of Virtual humans Making Verbal Communication Mistakes on Learners' Perspectives of their Credibility, Reliability, and Trustworthiness 29

The Effect of Virtual Humans Making Verbal Communication Mis...

引用

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

作者： Stuart, Jacob Aul, Karen Bumbach, Michael D. Stephen, Anita de Siqueira, Alexandre Gomes Lok, Benjamin Univ Florida Gainesville FL 32611 USA

ISBN: (纸本)9781665496179

Simulating real-world experiences in a safe environment has made virtual human medical simulations a common use case for research and interpersonal communication training. Despite the benefits virtual human medical simulations provide, previous work suggests that users struggle to notice when virtual humans make potentially life-threatening verbal communication mistakes inside virtual human medical simulations. In this work, we performed a 2x2 mixed design user study that had learners (n = 80) attempt to identify verbal communication mistakes made by a virtual human acting as a nurse in a virtual desktop environment. A virtual desktop environment was used instead of a head-mounted virtual reality environment due to Covid-19 limitations. The virtual desktop environment experience allowed us to explore how frequently learners identify verbal communication mistakes in virtual human medical simulations and how perceptions of credibility, reliability, and trustworthiness in the virtual human affect learner error recognition rates. We found that learners struggle to identify infrequent virtual human verbal communication mistakes. Additionally, learners with lower initial trustworthiness ratings are more likely to overlook potentially life-threatening mistakes, and virtual human mistakes temporarily lower learner credibility, reliability, and trustworthiness ratings of virtual humans. From these findings, we provide insights on improving virtual human medical simulation design. Developers can use these insights to design virtual simulations for error identification training using virtual humans.

关键词： human-centered computing Empirical studies in HCI

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A Stroop-based Long-term Cognitive Training Game for the Elderly in Head-mounted Displays 21

A Stroop-based Long-term Cognitive Training Game for the Eld...

引用

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

作者： Du, Qiuxin Weng, Dongdong Jiang, Haiyan Chen, Shanshan Beijing Inst Technol Beijing Engn Res Ctr Mixed Real & Adv Display Beijing Peoples R China

ISBN: (数字)9781665453653

ISBN: (纸本)9781665453653

Virtual reality (VR) games have been increasingly incorporated into the cognitive training of the elderly because of their unique immersion and interactivity. However, previous studies have focused on existing commercial games, which are not suitable for the elderly. Due to the progressive decline in cognitive abilities and inflexible action of the elderly, we propose a VR music game (LightSword) based on two classical psychological paradigms (Dual-task and Stroop). To enable long-term cognitive training of the elderly in a playful and relaxed virtual environment, the game integrates easy interactions, motivating mechanisms with real-time feedback, and pleasant music. The results of the prior study show a linear increase in game performance scores which are related to cognitive ability, demonstrating the potential of the proposed game for cognitive training.

关键词： human-centered computing Interaction design Interaction design process and methods User centered design

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Prototyping a Virtual Agent for Pre-school English Teaching

Prototyping a Virtual Agent for Pre-school English Teaching

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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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Virtual Reality in Small and Medium-Sized Enterprises: A Systematic Literature Review

Virtual Reality in Small and Medium-Sized Enterprises: A Sys...

引用

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

作者： Brettschuh, Sandra Holly, Michael Hulla, Maria Herstaetter, Patrick Pirker, Johanna Graz Univ Technol Graz Austria

ISBN: (纸本)9781665484022

The industry is currently operating in the fourth industrial revolution, also called Industry 4.0, the central element of which is the digitization of companies. One promising implementation of Industry 4.0 is the use of virtual reality (VR). Due to its development in terms of better affordability and accessibility in recent years, VR has gained increasing popularity. This creates new opportunities especially for small and medium-sized enterprises (SMEs) to use VR to boost business and optimize their product development and processes. In this paper, we aim to identify the potentials and challenges of using VR in SMEs by means of a systematic literature review. Therefore, we focus on analyzing the current state of the art, including use cases, used technology, opportunities, and challenges faced by the companies.

关键词： human-centered computing human computer interaction (HCI) Interaction paradigms Virtual reality human-centered computing Applied computing Operations research Industry and manufacturing

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CleAR Sight: Exploring the Potential of Interacting with Transparent Tablets in Augmented Reality 21

CleAR Sight: Exploring the Potential of Interacting with Tra...

引用

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

作者： Krug, Katja Bueschel, Wolfgang Klamka, Konstantin Dachselt, Raimund Tech Univ Dresden Interact Media Lab Dresden Dresden Germany Tech Univ Dresden Cluster Excellence Phys Life Dresden Germany Tech Univ Dresden Ctr Tactile Internet Human In The Loop CeTI Dresden Germany

ISBN: (数字)9781665453257

ISBN: (纸本)9781665453257

In this paper, we examine the potential of incorporating transparent, handheld devices into head-mounted Augmented Reality (AR). Additional mobile devices have long been successfully used in head-mounted AR, but they obscure the visual context and real world objects during interaction. Transparent tangible displays can address this problem, using either transparent OLED screens or rendering by the head-mounted display itself. However, so far, there is no systematic analysis of the use of such transparent tablets in combination with AR head-mounted displays (HMDs), with respect to their benefits and arising challenges. We address this gap by introducing a research platform based on a touch-enabled, transparent interaction panel, for which we present our custom hardware design and software stack in detail. Furthermore, we developed a series of interaction concepts for this platform and demonstrate them in the context of three use case scenarios: the exploration of 3D volumetric data, collaborative visual data analysis, and the control of smart home appliances. We validate the feasibility of our concepts with interactive prototypes that we used to elicit feedback from HCI experts. As a result, we contribute to a better understanding of how transparent tablets can be integrated into future AR environments.

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

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Virtual Reality Point Cloud Annotation

Virtual Reality Point Cloud Annotation

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

作者： Franzluebbers, Anton Li, Changying Paterson, Andrew Johnsen, Kyle Univ Georgia Athens GA 30602 USA

ISBN: (纸本)9781665484022

This work presents an immersive headset-based virtual reality visualization and annotation system for point clouds, oriented towards application on laser scans of plants. The system can be used to paint regions or individual points with fine detail, even with large, dense point clouds. A non-immersive desktop interface was designed for comparison within the same application. A within-subjects user study (N=16) was conducted to compare these interfaces for annotation and counting tasks. Results showed a strong preference for the immersive virtual reality interface, likely as a result of perceived and actual significant differences in task performance.

关键词： human-centered computing Virtual Reality computing methodologies Virtual Reality computing methodologies Point-based models

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Towards VR Simulation-Based Training in Brain Death Determination

Towards VR Simulation-Based Training in Brain Death Determin...

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

作者： Kockwelp, Pascal Junga, Anna Valkov, Dimitar Marschall, Bernhard Holling, Markus Risse, Benjamin Univ Munster Munster Germany PROSELIS Fdn Hosp Recklinghausen Germany Saarland Univ Saarbrucken Germany Univ Hosp Munster Munster Germany

ISBN: (纸本)9781665484022

Patient protection and university hospital specialisations render a systematic training of physician-related skills increasingly difficult. Substitutes such as manikins or actor-based role-playing simulations are expensive and cannot be used for all clinical situations. As a consequence, teaching practical clinical skills has become one of the key concerns of modern medical education. Here we present a VR-based training prototype which allows medical students to perform brain death examinations in a virtual intensive care environment. Brain death diagnosis is a prime example for the challenges of medical education since it can neither be trained in simulations nor involve real patients, so that our simulation - for the first time - enables practical training of this legally obligatory and medically crucial diagnostic procedure. In particular, we motivate the use-case and teaching goals and describe the implementation of our prototype which is evaluated by medical experts to ensure medico-didactic standards.

关键词： Applied computing Education Interactive learning environments human-centered computing human computer interaction (HCI) Interaction paradigms Virtual reality

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Demonstration of Multi-image Switchable Visual Displays Using Carpets 21

Demonstration of Multi-image Switchable Visual Displays Usin...

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

作者： Yamamoto, Takumi Sugiura, Yuta Keio Univ Tokyo Japan

ISBN: (数字)9781665453653

ISBN: (纸本)9781665453653

In this demo, we demonstrate the system which can present different images on the carpet depending on the viewpoint or the light source position by raising the fibers of existing carpets. There are some carpets in which shades of gray can be changed by changing the fiber's directions. By controlling the direction of the fibers of the carpet in different direction, we found that the shades of gray can be changed depending on the viewpoint position and the light source position. We demonstrate the images which switch between two images by changing the viewpoint or the light source position.

关键词： human-centered computing Mixed / augmented reality

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